publicationDate stringlengths 10 10 | abstract stringlengths 0 37.3k | title stringlengths 1 5.74k | doi stringlengths 11 47 ⌀ |
|---|---|---|---|
2016-10-01 | Resonance period is a key parameter in the seismic design of a structure, thus dynamic parameters of buildings in Beirut (Lebanon) were investigated based on ambient vibration method for risk and vulnerability assessment. Lebanon is facing high seismic hazard due to its major faults, combined to a high seismic risk cau... | Seismic response of Beirut (Lebanon) buildings: instrumental results from ambient vibrations | 10.1007/s10518-016-9920-9 |
2016-10-01 | This paper proposes a new criterion for the occurrence of stick–slip vibration in an oscillator excited by a moving belt. Equations of motion were derived for a single-degree-of-freedom oscillator excited by the friction between the oscillator mass and a moving belt, considering two types of velocity-dependent friction... | Stick–slip vibration of an oscillator with damping | 10.1007/s11071-016-2887-x |
2016-10-01 | Attenuation of a bulk wave, generated by a point source, propagating in an isotropic medium, is due to the geometry and nature of the material involved. In numerical simulations, if the complete domain of propagation is modeled, then it captures the attenuation of a wave caused due to its geometry. To model the attenua... | Attenuation modelling of bulk waves generated by a point source in an isotropic medium | 10.1007/s12206-016-0917-8 |
2016-10-01 | In this paper, we propose a methodology to tune power system stabilizers and thyristor-controlled series capacitor damping controllers simultaneously. The particle swarm optimization algorithm is incorporated into a power system model to tune the parameters of supplementary damping controllers. A test power system of 1... | Design of PSS and TCSC Damping Controller Using Particle Swarm Optimization | 10.1007/s40313-016-0257-z |
2016-10-01 | Of concern is a structure consisting of two identical beams of uniform thickness. The beams are fastened tightly but still allowing an interfacial slip between the two components. This means that we are in presence of a longitudinal displacement and at the same time keeping a continuous contact of the layers. These bea... | Uniform Stability of a Laminated Beam with Structural Memory | 10.1007/s12346-015-0147-y |
2016-10-01 | The effect of the damping insertion due to viscoelastic material (VEM) on the dynamic behavior of aluminum panels is assessed in this work. Dynamic mechanical analysis tests are carried out, aiming at characterizing the rheological behavior of a VEM compound. The time–temperature superposition principle is applied and ... | Validating the modeling of sandwich structures with constrained layer damping using fractional derivative models | 10.1007/s40430-016-0533-7 |
2016-10-01 | Effects of temporally correlated infiltration on water flow in an unsaturated–saturated system were investigated. Both white noise and exponentially correlated infiltration processes were considered. The moment equations of the pressure head ( ψ ) were solved numerically to obtain the variance and autocorrelation funct... | Effects of temporally correlated infiltration on water flow in an unsaturated–saturated system | 10.1007/s00477-015-1119-0 |
2016-10-01 | An approach that can be used for modeling the situation of unanticipated yaw is presented. A software is developed that allows us to obtain the helicopter equilibrium attitude at an arbitrary speed and consider the helicopter dynamics under influence of a certain disturbing factor. | On a certain approach to modeling aerodynamics and dynamics of spatial motion of single rotor helicopters | 10.3103/S1068799816040103 |
2016-10-01 | The stationary response analysis of stochastic vibro-impact (VI) dynamical system with a unilateral nonzero offset barrier and viscoelastic damping under additive and multiplicative random excitations is explored. First, the conversion of the original stochastic VI system coupled with viscoelastic damping into an equiv... | Stationary response analysis of vibro-impact system with a unilateral nonzero offset barrier and viscoelastic damping under random excitations | 10.1007/s11071-016-2931-x |
2016-10-01 | The eavesdropping attacks applied in the quantum secret sharing (QSS) protocols through a phase-damping noisy environment are very easy to be realized. In fact, the QSS fidelity has an ordinary behaviour with just one peak according to the noise rate value for many values of the quantum message amplitude. The present w... | Exploiting a Fock Cavity Field to Enhance Quantum Secret Sharing Through a Phase-Damping Noisy Channel | 10.1007/s10773-016-3078-8 |
2016-10-01 | In order to reduce structural vibrations in narrow frequency bands, tuned mass absorbers can be an appropriate measure. A quite similar approach which makes use of applied piezoelectric elements, instead of additional oscillating masses, are the well-known resonant shunts, consisting of resistances, inductances, and po... | Tuning of a vibration absorber with shunted piezoelectric transducers | 10.1007/s00419-014-0972-5 |
2016-10-01 | The Bouc–Wen model was used to investigate nonlinear dynamical behavior of a wire-rope isolator and an asymmetric Stockbridge damper. The experimental vibration signals were acquired through accelerometers placed along the sample. The wire-rope isolator system was excited using and electromechanical shaker with constan... | Nonlinear dynamic analysis of wire-rope isolator and Stockbridge damper | 10.1007/s11071-016-2903-1 |
2016-10-01 | Virtual simulation and optimization of the dynamic behavior of machine tools in the development phase is required to satisfy the increasing demands on machine tool performance. While mass and stiffness properties can be simulated with sufficient accuracy, often no suitable damping models are available for the component... | Friction in feed drives of machine tools: investigation, modeling and validation | 10.1007/s11740-016-0678-3 |
2016-10-01 | The present paper is devoted to an investigation on the asymptotic stability for the damped oscillators with multiple degrees of freedom, $$\begin{aligned} {\mathbf {x}}'' + h(t)\,{\mathbf {x}}' + A\,{\mathbf {x}} = {\mathbf {0}} \end{aligned}$$ x ′ ′ + h ( t ) x ′ + A x = 0 and its generalization $$\begin{aligned} M\,... | Asymptotic Stability of Coupled Oscillators with Time-Dependent Damping | 10.1007/s12346-015-0175-7 |
2016-10-01 | Machine tools are generally used with process parameters that are as productive as possible yet stable. One way to raise productivity is to increase the process parameters like cutting speed or depth of cut (DOC). However, this approach will lead to process instabilities sooner or later. An increased rotational speed o... | Simulation and development of an active damper with robust μ-control for a machine tool with a gantry portal | 10.1007/s11740-016-0691-6 |
2016-10-01 | This study investigated the damping effects of a tuned mass damper (TMD) on a fixed-free 3D nonlinear beam resting on a nonlinear elastic foundation with existing internal resonances. The nonlinear elastic foundation below ( y -direction) and beside ( z -direction) the nonlinear beam was simulated using cubic nonlinear... | Influence of tuned mass damper on fixed-free 3D nonlinear beam embedded in nonlinear elastic foundation | 10.1007/s11012-016-0372-8 |
2016-09-22 | In this paper, we are concerned with the general decay result of the quasi-linear wave equation for Kirchhoff type containing Balakrishnan-Taylor damping with a delay in the boundary feedback and acoustic boundary conditions. | General decay of solutions for Kirchhoff type containing Balakrishnan-Taylor damping with a delay and acoustic boundary conditions | 10.1186/s13661-016-0679-3 |
2016-09-01 | In this work, we present an analytical and numerical study of the Korteweg-de Vries (KdV) equation on a bounded domain in the presence of a dissipation mechanism. We present results on the existence and uniqueness of strong solutions using the Faedo–Galerkin method and studying a regularized version of the KdV equation... | Analysis and computation of a nonlinear Korteweg-de Vries system | 10.1007/s10543-015-0589-2 |
2016-09-01 | We report on a novel technique to measure quartz tuning forks, and possibly other vibrating objects, in a quantum fluid using a multifrequency lock-in amplifier. The multifrequency technique allows to measure the resonance curve of a vibrating object much faster than a conventional single frequency lock-in amplifier te... | Probing Liquid
$$^4$$
4
He with Quartz Tuning Forks Using a Novel Multifreque... | 10.1007/s10909-016-1634-5 |
2016-09-01 | The viability of a complete structural characterization of civil structures is explored and discussed. In particular, the identification of modal (i.e. natural frequencies, damping ratios and modal shapes) and physical properties (i.e. mass and stiffness) using only the structure’s free decay response is studied. To ac... | Output-only identification of the modal and physical properties of structures using free vibration response | 10.1007/s11803-016-0345-x |
2016-09-01 | This paper presents an experimental setup aiming at evaluating the magneto-mechanical and damping properties of the thermoplastic magnetorheological elastomer (MRE). The idea of the system is to create controllable conditions similar to those present in a vehicles and other mechanical constructions and to make it possi... | Test setup for examination of magneto-mechanical properties of magnetorheological elastomers with use of a novel approach | 10.1016/j.acme.2015.12.002 |
2016-09-01 | The present study evaluates the role of the microstructure in the static and dynamic mechanical behavior of as-cast Al7075 alloy promoted by ultrasonic treatment (US) during solidification. The characterization of samples revealed that US treatment promoted grain and intermetallics refinement, changed the shape of the ... | Effect of grain and secondary phase morphologies in the mechanical and damping behavior of Al7075 alloys | 10.1007/s12540-016-6073-y |
2016-09-01 | An input-output signal selection based on Phillips-Heffron model of a parallel high voltage alternative current/high voltage direct current (HVAC/HVDC) power system is presented to study power system stability. It is well known that appropriate coupling of inputs-outputs signals in the multivariable HVDC-HVAC system ca... | Adaptive controller design based on input-output signal selection for voltage source converter high voltage direct current systems to improve power system stability | 10.1007/s11771-016-3283-x |
2016-09-01 | A method for identification of the elastic and damping properties of soft materials in tension–compression and shear in a composition with a rigid (base) material is proposed. The method is based on the analysis of the lowest free vibration frequencies and amplitude dependences of internal damping parameters of three-l... | Identification of the Elastic and Damping Characteristics of Soft Materials Based on the Analysis of Damped Flexural Vibrations of Test Specimens | 10.1007/s11029-016-9596-x |
2016-09-01 | Transport models allowing for cost damping are characterised by marginally decreasing cost sensitivities in demand. As a result, cost damping is a model extension of the simple linear-in-cost model requiring an appropriate non-linear link function between utility and cost. The link function may take different forms and... | Cost damping and functional form in transport models | 10.1007/s11116-015-9628-8 |
2016-09-01 | Metal/polymer-combined macro-composite structures are representative of a unique combination to achieve improved quality of products. In this work, a non-traditional method for manufacturing metal/polymer-combined sandwich structure for vibration damping was generated from a traditional method, plastic injection moldin... | Manufacturing polymer/metal macro-composite structure for vibration damping | 10.1007/s00170-015-8259-8 |
2016-09-01 | Vibrations are very prejudicial to machining as they directly affect the dimensional accuracy and surface roughness of the machined part. Excessive vibration must be avoided or at least reduced. This can be achieved in several ways, including the use of dampers and more rigid material for tool holders. Tool vibration i... | The use of carbide and particle-damped bars to increase tool overhang in the internal turning of hardened steel | 10.1007/s00170-015-8328-z |
2016-09-01 | Regenerative chatter in machining process is a root cause for tool wear and poor surface finish resulting in low production rate. Hence research has to be focused to identify an opportunity to suppress these chatters. This investigation is attempted to reduce the tool wear in boring process by incorporation of shape me... | Modeling and Optimization of Tool Wear in a Passively Damped Boring process using Response Surface Methodology | 10.1007/s12666-015-0707-5 |
2016-09-01 | The main intention of the present study is to reduce wind, wave, and seismic induced vibrations of jackettype offshore wind turbines (JOWTs) through a newly developed vibration absorber, called tuned liquid column gas damper (TLCGD). Using a Simulink-based model, an analytical model is developed to simulate global beha... | Contribution of tuned liquid column gas dampers to the performance of offshore wind turbines under wind, wave, and seismic excitations | 10.1007/s11803-016-0343-z |
2016-09-01 | A new response-spectrum mode superposition method, entirely in real value form, is developed to analyze the maximum structural response under earthquake ground motion for generally damped linear systems with repeated eigenvalues and defective eigenvectors. This algorithm has clear physical concepts and is similar to th... | Complex complete quadratic combination method for damped system with repeated eigenvalues | 10.1007/s11803-016-0342-0 |
2016-08-05 | We investigate the asymptotic behavior of solutions of the non-autonomous Navier-Stokes equation with nonlinear damping in three-dimensional bounded domain. When 3 < β ≤ 5 $3< \beta\leq5$ , the existence of pullback attractors is proved in V and H 2 ( Ω ) $\mathbf{H}^{2}(\Omega)$ , respectively. | Pullback
D
$\mathcal{D}$
-attractors for three-dimensional Navier-Stokes equations with nonlinear damping | 10.1186/s13661-016-0654-z |
2016-08-01 | To date, nonlinear dynamic analysis for seismic engineering predominantly employs the classical Rayleigh damping model and its variations. Though earlier studies have identified issues with the use of this model in nonlinear seismic analysis, it still remains the popular choice for engineers as well as for software pro... | Elemental damping formulation: an alternative modelling of inherent damping in nonlinear dynamic analysis | 10.1007/s10518-016-9904-9 |
2016-08-01 | Characteristics of El Niño-Southern Oscillation (ENSO) have changed since the late 1970s as it synchronized with the Pacific Decadal Oscillation (PDO). In order to investigate the primary feedback process responsible for the interdecadal change in ENSO characteristics according to the PDO, using the ocean assimilation ... | Inter-decadal change in El Niño-Southern Oscillation examined with Bjerknes stability index analysis | 10.1007/s00382-015-2883-8 |
2016-08-01 | Linear prediction methods, based on a Hankel data matrix, suffer from subspace leakage and degraded resolution when applied to data models that do not result in a mode matrix with Vandermonde structure, such as the constant- Q model. In the absence of noise, the Vandermonde structure ensures the equivalence between the... | Subspace Leakage Suppression for Joint Parameter Estimation of Quality Factors and Time Delays in Dispersive Media | 10.1007/s00034-015-0180-8 |
2016-08-01 | In the article, the application of the electrical spike, instead of the tone-burst, to the ultrasonic pulsed-Doppler velocity profiling the first time is presented. To generate ultrasound, the ultrasonic sensor is excited by the spike. For the Doppler method, the spike excitation was not used previously. It has been us... | Ultrasonic Doppler Velocity Profile Measurement of Single-and Two-Phase Flows Using Spike Excitation | 10.1007/s40799-016-0123-8 |
2016-08-01 | This paper presents a new direct modeling approach to analyze 3D dynamic SSI systems including building structures resting on shallow spread foundations. The direct method consists of modeling the superstructure and the underlying soil domain. Using a reduced shear modulus and an increased damping ratio resulted from a... | The near-field method: a modified equivalent linear method for dynamic soil–structure interaction analysis. Part I: Theory and methodology | 10.1007/s10518-016-9935-2 |
2016-08-01 | Improvements in the National Primary Standard for the Units of the Propagation Velocities of Longitudinal, Shear, and Surface Ultrasonic Waves in Solids are discussed. A new standard apparatus for reproduction of the unit of the damping coefficient for longitudinal ultrasonic waves is described. It is based on contactl... | National Primary Standard for the Units of the Propagation Velocities and Damping Coefficient of Ultrasonic Waves in Solids Get 189-2014 | 10.1007/s11018-016-0990-5 |
2016-08-01 | The parametric rolling (PR) in the head or following waves has been considered as one of the main stability failure modes in the development of the 2nd generation Intact Stability criterion by the International Maritime Organization (IMO). According to previous studies, the estimation methods of the roll damping affect... | A study of hybrid prediction method for ship parametric rolling | 10.1016/S1001-6058(16)60666-2 |
2016-08-01 | This paper aims to investigate the strongly nonlinear vibro-impact dynamic system with fractional derivative damping under Gaussian white noise excitation, and this system considers both nonlinear factors and non-smooth factors. With the help of non-smooth transformation, the original system is rewritten as a smooth sy... | Response of strongly nonlinear vibro-impact system with fractional derivative damping under Gaussian white noise excitation | 10.1007/s11071-016-2808-z |
2016-08-01 | The dynamic shear modulus G of soil was determined using a dynamic triaxial test system (DTTS) together with a fitting method. First, a novel linear relationship between G and damping ratio λ was proposed, which was used to select the appropriate G . Then, a hyperbolic model was constructed using the optimized paramete... | A novel linear relationship for calculating dynamic shear modulus of geomaterials | 10.1007/s11595-016-1456-y |
2016-08-01 | To reduce vibration and impact loads, a gas–hydraulic damper is proposed. Its working element is a magnetic rheological liquid. | Impact-load damping by integral hydraulic bearings | 10.3103/S1068798X16080098 |
2016-07-05 | A method to model and minimize resonant structural oscillations using magnetorheological dampers is presented. The response of the magnetorheological fluid flowing in a circular tube under a pressure gradient to the applied variable magnetic field is tailored to determine the optimum stress field in the fluid to mitiga... | Resonance modeling and control via magnetorheological dampers | 10.1007/s00033-016-0674-7 |
2016-07-01 | The study is concerned with isolation performance of a velocity-displacement-dependent (VDD) nonlinear damping, which has arbitrary nonnegative velocity exponent and displacement exponent. Displacement transmissibility of a single-degree-of-freedom (SDOF) vibration system with proposed damping under base excitation is ... | The isolation performance of vibration systems with general velocity-displacement-dependent nonlinear damping under base excitation: numerical and experimental study | 10.1007/s11071-016-2722-4 |
2016-07-01 | A theoretical and experimental method for determining the elastic and damping characteristics of materials is proposed based on analysis of vibrograms of damping flexural vibrations of test specimens with different structures. It is shown that during tension–compression and shear of a carbon fiber-reinforced plastic ma... | Identification of the elastic and damping characteristics of carbon fiber-reinforced plastic based on a study of damping flexural vibrations of test specimens | 10.1134/S0021894416040179 |
2016-07-01 | A new method to suppress conductor galloping with a roller damper as a component of a vibration isolation system is proposed. The dynamic behavior of the system is mathematically modeled taking into account the turn of the system together with damper due to the vertical deviation of the insulator set. The frequency res... | Effectiveness of a Roller Damper in Suppressing Conductor Galloping | 10.1007/s10778-016-0767-1 |
2016-07-01 | In machining titanium alloy as difficult-to-cut or hard materials, productivity is limited because of low heat conductivity at high spindle speed. Process damping is a damping mechanism during the machining process that can be exploited to improve the limited productivity in machining titanium alloy at low cutting spee... | Effects of irregular tool geometry and machining process parameters on the wavelength performance of process damping in machining titanium alloy at low cutting speed | 10.1007/s00170-015-7906-4 |
2016-07-01 | Both the seat and cab system of truck play a vital role in ride comfort. The damping matching methods of the two systems are studied separately at present. However, the driver, seat, and cab system are one inseparable whole. In order to further improve ride comfort, the seat suspension is regarded as the fifth suspensi... | Damping collaborative optimization of five-suspensions for driver-seat-cab coupled system | 10.3901/CJME.2016.0201.018 |
2016-07-01 | We propose a new optical field named Laguerre-polynomial-weighted two-mode squeezed state. We find that such a state can be generated by passing the l -photon excited two-mode squeezed vacuum state C _ l a ^† l S _2|00〉 through an single-mode amplitude damping channel. Physically, this paper actually is concerned what ... | Laguerre-Polynomial-Weighted Two-Mode Squeezed State | 10.1007/s10773-016-2962-6 |
2016-07-01 | Coupled vibrations may occur between ship lift structure and the ship chamber during seismic process due to the ship chamber being hung at the roof of the ship lift. An investigation is carried out to explore the possibility of using different devices to connect the ship lift towers and the ship chamber to prevent the ... | Analysis and Control of the Coupled Vibration Between the Ship Lift and Ship Chamber | 10.1007/s40999-016-0041-2 |
2016-07-01 | The interaction of the ride and handling systems is one of the challenging topics in vehicle dynamics and control. In this study the dynamic behavior of a passenger car considering coupling among all the fourteen degrees of freedom is modeled using Boltzmann Hamel equations. In order to improve the ride quality and sta... | Robust control of nonlinear integrated ride and handling model using magnetorheological damper and differential braking system | 10.1007/s12206-016-0601-z |
2016-07-01 | In recent years, ground vibration has become a popular research topic due to the growing construction close to vibration sources and the attentiveness of people about living conditions. Thus, vibrations caused by the passage of the train near buildings play an important role. In prediction of train-induced vibrations, ... | Numerical modeling of train-induced vibration of nearby multi-story building: A case study | 10.1007/s12205-015-0264-9 |
2016-07-01 | In combination of the advantages of both parallel mechanisms and compliant mechanisms, a compliant parallel mechanism with two rotational degrees of freedom is designed to meet the requirement of a lightweight and compact pan-tilt platform. Firstly, two commonly-used design methods i.e. direct substitution and Freedom ... | Design and analysis of a compliant parallel pan-tilt platform | 10.1007/s11012-015-0116-1 |
2016-07-01 | The Vectorial-wave method (VWM) is developed to study free and forced vibrations of cylindrical shells in the presence of dampers at supports. In modeling the issue, a circular cylindrical shell is considered with two ended supports, including separate springs and viscous dampers in the possible directions. Accordingly... | A Vectorial-Wave Method for free and forced vibration analysis of extra thin cylindrical shells with boundary discrete damping | 10.1007/s12206-016-0610-y |
2016-07-01 | In this paper, we consider the interval oscillation criteria for second-order damped differential equations with mixed nonlinearities $$\begin{aligned} \left( r(t)(x'(t))^\gamma \right) '+p(t)(x'(t))^\gamma +\sum ^n_{i=0}q_i(t)\left| x(g_i(t))\right| ^{\alpha _i}\text {sgn}\ x(g_i(t))=e(t), \end{aligned}$$ r ( t ) ( x ... | Interval Oscillation Criteria for Second-Order Damped Differential Equations with Mixed Nonlinearities | 10.1007/s40840-015-0193-2 |
2016-07-01 | We investigate the asymptotic behavior of solutions to damped hyperbolic equations involving strongly degenerate differential operators. First we establish the existence of a global attractor for the damped hyperbolic equation under consideration. Then we prove the finite dimensionality of the global attractor. | Large-time behavior of solutions to degenerate damped hyperbolic equations | 10.1134/S0037446616040078 |
2016-07-01 | A solution to the problem of damper gain with a porous ring and compressible film of lubricant has been given. A feature of the solution is the combined assumption of a set of variable factors, which were previously only considered for particular cases. | Dаmреr with а pоrоus element fоr bearing arrangements | 10.3103/S1068366616040024 |
2016-07-01 | This paper investigates scaling a modified limited-memory algorithm to solve unconstrained optimization problems. The basic idea was to combine the damped techniques for the limited-memory update and the technique of equilibrating the inverse Hessian matrix. Enhanced curvature information about the objective function i... | Scaling Damped Limited-Memory Updates for Unconstrained Optimization | 10.1007/s10957-016-0940-z |
2016-07-01 | The design and characterisation of a magnetic vibration absorber (MVA), completely relying on magnetic forces, is addressed. A distinctive feature of the absorber is the ability of tuning the linear stiffness together with the nonlinear cubic and quintic stiffnesses by means of repulsive magnets located in the axis of ... | Design of a magnetic vibration absorber with tunable stiffnesses | 10.1007/s11071-016-2731-3 |
2016-06-08 | Amphiphilic triblock copolymer Poly(ε-caprolactone)-block-polydimethylsiloxane-block-poly(ε-caprolactone) (PCL-b-PDMS-b-PCL, LDL) was synthesized via the ring-opening polymerization of ε-caprolactone in the presence of hydroxyl-terminated polydimethylsiloxane (HTPDMS) and was utilized to modify epoxy. The tensile stren... | Preparation of damping structural integration materials via the formation of nanostructure in triblock copolymer modified epoxy resins | 10.1007/s10965-016-1019-0 |
2016-06-01 | We consider Kirchhoff equations with strong damping, namely with a friction term which depends on a power of the “elastic” operator. We address local and global existence of solutions in two different regimes depending on the exponent in the friction term. When the exponent is greater than 1/2, the dissipation prevails... | Kirchhoff equations with strong damping | 10.1007/s00028-015-0308-0 |
2016-06-01 | The performance of piezoelectric energy harvesters (PEHs) operating in the anticipated vibration environments depends upon various nonlinearities existing in electromechanical dynamic system. In this paper, the influence of geometric, material and damping nonlinearities on the dynamic response of PEH is investigated. S... | Modeling of geometric, material and damping nonlinearities in piezoelectric energy harvesters | 10.1007/s11071-016-2660-1 |
2016-06-01 | The damping modification factor (DMF) has been extensively used in earthquake engineering to describe the variation of structural responses due to varied damping ratios. It is known that DMFs are dependent not only on structural dynamic properties but also on characteristics of ground motions. DMFs regulated in current... | Evaluation of the damping modification factor for structures subjected to near-fault ground motions | 10.1007/s10518-016-9885-8 |
2016-06-01 | In this paper, we consider the weak viscoelastic wave equations with dynamic boundary conditions related to the Kelvin Voigt damping and delay term acting on the boundary in a bounded domain. Under appropriate conditions on $$\mu _{1}$$ μ 1 and $$\mu _{2}$$ μ 2 , we prove the asymptotic behavior by making use an approp... | Asymptotic behavior for a weak viscoelastic wave equations with a dynamic boundary and time varying delay term | 10.1007/s12190-015-0917-3 |
2016-06-01 | Realistic representation of the frequency dependence of dielectric function of noble metals has a significant impact on the accuracy of description of their optical properties and farther applications in plasmonics, nanoscience, and nanotechnology. Drude-type models successfully used in describing material properties o... | Dielectric Function for Gold in Plasmonics Applications: Size Dependence of Plasmon Resonance Frequencies and Damping Rates for Nanospheres | 10.1007/s11468-015-0128-7 |
2016-06-01 | In this paper, a mathematical model is presented for studying thin film damping of the surrounding fluid in an in-plane oscillating micro-beam resonator. The proposed model for this study is made up of a clamped-clamped micro-beam bound between two fixed layers. The micro-gap between the micro-beam and fixed layers is ... | Studying thin film damping in a micro-beam resonator based on non-classical theories | 10.1007/s10409-015-0482-x |
2016-06-01 | A hydraulic damper with self-adjustment of the damping force is developed for the executive mechanisms of mechatronic systems with cyclic control. Equations of motion of an executive mechanism with the damper are proposed, taking account of the external forces. Analytical formulas are derived for the basic structural p... | Self-adjusting hydraulic damper for a pneumatic robot | 10.3103/S1068798X16060137 |
2016-06-01 | It is well known that nonlinearity may lead to localization effects and coupling of internally resonant modes. However, research focused primarily on conservative systems commonly assumes that the near-resonant forced response closely follows the autonomous dynamics. Our results for even a simple system of two coupled ... | Global complexity effects due to local damping in a nonlinear system in 1:3 internal resonance | 10.1007/s00419-015-1080-x |
2016-06-01 | Viscous damping is a dominant source of energy dissipation in laterally oscillating micro-structures. In micro-resonators in which the characteristic dimensions are comparable to the dimensions of the fluid molecules, the assumption of the continuum fluid theory is no longer justified and the use of micro-polar fluid t... | Viscous fluid damping in a laterally oscillating finger of a comb-drive micro-resonator based on micro-polar fluid theory | 10.1007/s10409-015-0550-2 |
2016-06-01 | Topology optimization of passive constrained layer damping (PCLD) treatment patched on thin plates with respect to sound radiation at low frequency resonance is investigated. An extended solid isotropic material with penalization (SIMP) model is described using an interface finite element model for viscoelastic layer. ... | Topology optimization of PCLD on plates for minimizing sound radiation at low frequency resonance | 10.1007/s00158-015-1371-4 |
2016-06-01 | In this paper, a new method is presented for prediction of cutting forces, surface texture and stability lobes in end milling operation based on time series analysis. In the approach, an equivalent damping ratio is defined for the cutting zone while the damping ratio of non-cutting zone is determined by experimental mo... | Improved prediction of stability lobes in milling process using time series analysis | 10.1007/s10845-014-0904-9 |
2016-06-01 | This work addresses the problem of self-excited vibration, which degrades the stability of the levitation control, decreases the ride comfort, and restricts the construction cost of maglev system. Firstly, a minimum model containing a flexible bridge and a single levitation unit is presented. Based on the simplified mo... | Maglev self-excited vibration suppression with a virtual sky-hooked damper | 10.1007/s11771-016-3188-8 |
2016-05-13 | The effect of damping on the re-stabilization of statically unstable linear Hamiltonian systems, performed via parametric excitation, is studied. A general multi-degree-of-freedom mechanical system is considered, close to a divergence point, at which a mode is incipiently stable and n − 1 modes are (marginally) stable.... | On the effect of damping on the stabilization of mechanical systems via parametric excitation | 10.1007/s00033-016-0659-6 |
2016-05-04 | In this paper, we present some sufficient conditions for the oscillation of all solutions of a second order forced impulsive delay differential equation with damping term. Three factors-impulse, delay and damping that affect the interval qualitative properties of solutions of equations are taken into account together. ... | Interval oscillation criteria for second-order forced impulsive delay differential equations with damping term | 10.1186/s40064-016-2117-5 |
2016-05-01 | In this article, an alternative to the classical dynamic equation formulation is presented. To achieve this goal, we need to derive the reciprocal theorem in rates and the principle of virtual work in rates, in a small deformation regime, with which we will be able to obtain an expression for damping force. In this new... | Dynamic analysis: a new point of view | 10.1007/s00161-015-0419-4 |
2016-05-01 | We study how Unruh effect and quantum noise affect the payoffs of a quantum conflicting interest Bayesian game. Three types of noisy channels, i.e., the amplitude damping channel, the depolarizing channel and the phase damping channel, are employed to model the decoherence processes. We find that Unruh effect weakens t... | Relativistic Quantum Bayesian Game Under Decoherence | 10.1007/s10773-015-2873-y |
2016-05-01 | Each joint of hydraulic drive quadruped robot is driven by the hydraulic drive unit (HDU), and the contacting between the robot foot end and the ground is complex and variable, which increases the difficulty of force control inevitably. In the recent years, although many scholars researched some control methods such as... | Force control compensation method with variable load stiffness and damping of the hydraulic drive unit force control system | 10.3901/CJME.2016.0311.030 |
2016-05-01 | The paper presents the esults of measuring the elastic parameters of an oscillatory system (coefficient of pondermotive elasticity, damping factor, and oscillation frequency) whose viscous inertial element is represented by a magnetic fluid confined in a tube by magnetic levitation in a strong magnetic field. The role ... | Free oscillations of magnetic fluid in strong magnetic field | 10.1134/S1063771016030131 |
2016-05-01 | We consider Vlasov fluctuations from a spatially uniform, infinitely extended plasma equilibrium and derive the appropriate Braun–Hepp evolution equations (with regularized potential). Assuming a Gaussian initial fluctuation field (of the form associated with the relevant central limit theorem), we show that at long ti... | Time-Asymptotic Evolution of Spatially Uniform Gaussian Vlasov Fluctuation Fields | 10.1007/s10955-016-1504-1 |
2016-05-01 | We present a model of interaction between a four-level atom and the cavity field initially prepared in the coherent state in the presence of the phase damping effect. We discuss the atom–field entanglement and statistical properties under the damping effect in view of numerical calculations. We use the Mandel parameter... | Numerical Study of Some Statistical Quantities for Quantum Systems Under Damping Effects | 10.1007/s10946-016-9563-y |
2016-05-01 | The intersection between the two concepts of structural control and defectiveness is discussed. Two simple oscillators differently connected by serial spring-dashpot arrangement are used to simply simulate technically relevant cases: dissipatively coupled adjacent free-standing structures, structures equipped by TMD an... | Structural control design and defective systems | 10.1007/s00161-014-0410-5 |
2016-04-30 | We establish the optimal $${L^{p}-L^{2}(1 \leq p < 6/5)}$$ L p - L 2 ( 1 ≤ p < 6 / 5 ) time decay rates of the solution to the Cauchy problem for the 3D inviscid liquid–gas two-phase flow model and analyze the influences of the damping on the qualitative behaviors of solution. Compared with the viscous liquid–gas two-p... | Decay of the 3D inviscid liquid–gas two-phase flow model | 10.1007/s00033-016-0658-7 |
2016-04-29 | By using the time-dependent mean-field approach based on the Popov approximation, the Landau damping in a Bose-Fermi superfluid mixture in the presence of a long-range $ 1/r$ interaction between bosons at finite temperature is studied. For a homogeneous three-dimension (3D) gas, we will show, since both Bose-Fermi and ... | Effect of long-range 1/r interactions on the Landau damping in a Bose-Fermi mixture | 10.1140/epjp/i2016-16122-7 |
2016-04-21 | We give a new, simpler, but also and most importantly more general and robust, proof of nonlinear Landau damping on $${\mathbb {T}}^d$$ T d in Gevrey $$-\frac{1}{s}$$ - 1 s regularity ( $$s > 1/3$$ s > 1 / 3 ) which matches the regularity requirement predicted by the formal analysis of Mouhot and Villani [ 67 ]. Our pr... | Landau Damping: Paraproducts and Gevrey Regularity | 10.1007/s40818-016-0008-2 |
2016-04-16 | The vibration control using the piezoelectric elements is an area interesting for many industrial sectors. Within this framework, we propose an improved control technique based in synchronized switch damping by energy transfer. It realizes the energy transfer using storage capacitances and switches synchronized with th... | Multimodal vibration damping using energy transfer | 10.1007/s11082-016-0467-4 |
2016-04-07 | In this paper, we consider the viscoelastic wave equation with Balakrishnan–Taylor damping. This work is devoted to prove uniform decay rates of the energy without imposing any restrictive growth assumption on the damping term and weakening the usual assumptions on the relaxation function. Our estimate depends both on ... | General decay rate estimates for viscoelastic wave equation with Balakrishnan–Taylor damping | 10.1007/s00033-016-0625-3 |
2016-04-01 | To study the damping capacity of BaTiO_3/Al composites, Al composites reinforced with BaTiO_3 powder (average grain sizes: 100 and 1000 nm) were fabricated by the hot-pressing sintering method. The damping properties of pure Al and BaTiO_3/Al composites were investigated and compared based on the dynamic mechanical ana... | A study on the damping capacity of BaTiO_3-reinforced Al-matrix composites | 10.1007/s12034-016-1171-5 |
2016-04-01 | We construct a damping term for general higher-order strictly hyperbolic homogeneous equations with constant coefficients. We derive long-time decay estimates for the solution to the Cauchy problem, and we show that no better dissipative effect can be obtained with a different damping term . | A damping term for higher-order hyperbolic equations | 10.1007/s10231-015-0477-z |
2016-04-01 | Plasmons are fundamental collective excitations in many particle charged systems like in free electron liquid in metals, high energy nuclear plasma in solar core or in fusion devices, in ion gas in ionosphere or in intra- and inter-galactic gas clouds. Plasmons play a central role also in small systems, in particular i... | Plasmons in Finite Spherical Electrolyte Systems: RPA Effective Jellium Model for Ionic Plasma Excitations | 10.1007/s11468-015-0064-6 |
2016-04-01 | Boring is one of the most common operations to enlarge or finish predrilled deep holes and is usually conducted in low spindle speed ranges. Due to low dynamic performances of conventional boring bar, boring operation is often hindered by drastic vibration. In this paper, a design and optimization method of a special b... | Boring bar with constrained layer damper for improving process stability | 10.1007/s00170-015-7670-5 |
2016-04-01 | The squeal noise occurring from the disc brakes of passenger cars has been analyzed by using the complex eigenvalue method numerically. The contact between a disc and two pads was analytically modeled as many linear springs and dampers in an effort to develop the improved equation of motion derived on the basis of Lagr... | Analysis of automotive disc brake squeal considering damping and design modifications for pads and a disc | 10.1007/s12239-016-0021-1 |
2016-04-01 | A displacement-based design procedure using hysteretic damped braces (HYDBs) is proposed for the seismic retrofitting of unsymmetric-plan structures. An expression of the viscous damping equivalent to the hysteretic energy dissipated by the damped braced frame is proposed under bidirectional seismic loads, where correc... | Nonlinear seismic analysis of unsymmetric-plan structures retrofitted by hysteretic damped braces | 10.1007/s10518-016-9873-z |
2016-04-01 | The resonant interaction of surface and internal waves produces a nonlinear mechanism for energy transfer among wave components in oceans, lakes, and estuaries. In many field situations, the stratification may be well approximated by a two-layer fluid with a diffuse interface. The growth and damping rates of sub-harmon... | Growth and damping of interfacial waves on a diffuse interface | 10.1007/s10652-015-9429-9 |
2016-04-01 | This work evaluates the impact of added zirconia on the thermomechanical and thermoelastic fatigue properties of high-alumina refractory castables. Three testing scenarios are presented in the study: 1) Resonant Frequency Damping Analysis (RFDA) after cyclic temperature changes with and without mechanical load, 2) Refr... | Elastic and Mechanical Fatigue at High Temperatures of High-Alumina Castables with Addition of Partially Stabilized Zirconia | 10.1007/BF03401182 |
2016-04-01 | Recently, control approaches for a hydraulic robot in the field of robotics have attracted considerable attention owing to their high power-to-weight ratio. Many studies on behavior and control exploiting the advantages of hydraulic robots have been pursued. Application to hydraulically actuated systems, however, is no... | Method for improving the position precision of a hydraulic robot arm: dual virtual spring–damper controller | 10.1007/s11370-015-0182-1 |
2016-04-01 | Purpose Danger-associated molecular patterns (DAMPs) released of trauma could contribute to an immune suppressed state that renders patients vulnerable towards nosocomial infections. We investigated DAMP release in trauma patients, starting in the prehospital phase, and assessed its relationship with immune suppression... | Plasma levels of danger-associated molecular patterns are associated with immune suppression in trauma patients | 10.1007/s00134-015-4205-3 |
2016-04-01 | The motivation of this work is to get an insight into the irreversible energy dissipation on the quantum level. The presented examination procedure is based on the Feynman path integral method that is applied and widened toward the calculation of the kernel of a quantum mechanical damped oscillator. Here, it is shown t... | Quantum particle motion in absorbing harmonic trap | 10.1007/s12648-015-0774-9 |
2016-04-01 | Instead of the L ^ p estimates, we study the modulation space estimates for the solution to the damped wave equation. Decay properties for both the linear and semilinear equations are obtained. The estimates in modulation space differ in many aspects from those in L ^ p space. | Modulation space estimates for damped fractional wave equation | 10.1007/s11425-015-5082-5 |
2016-03-16 | In this paper, we study a class of damped vibration systems, u ¨ ( t ) + B u ˙ ( t ) − L ( t ) u ( t ) + ∇ W ( t , u ( t ) ) = 0 , ∀ t ∈ R , $$ \ddot{u}(t)+B\dot{u}(t)-L(t)u(t)+\nabla W\bigl(t,u(t)\bigr)=0, \quad \forall t \in \mathbb{R}, $$ where W ( t , u ) $W(t,u)$ is of indefinite sign. By using a critical point th... | Homoclinic orbits for damped vibration systems with asymptotically quadratic or subquadratic potentials | 10.1186/s13662-016-0805-7 |
2016-03-15 | Background Users of neuroprostheses employing electrical stimulation (ES) generally complete the stand-to-sit (STS) maneuver with high knee angular velocities, increased upper limb support forces, and high peak impact forces at initial contact with the chair. Controlling the knee during STS descent is challenging in in... | Improving stand-to-sit maneuver for individuals with spinal cord injury | 10.1186/s12984-016-0137-6 |
2016-03-08 | In this paper, we establish two sufficient conditions for the oscillation of forced fractional difference equations with damping term of the form ( 1 + p ( t ) ) Δ ( Δ α x ( t ) ) + p ( t ) Δ α x ( t ) + f ( t , x ( t ) ) = g ( t ) , t ∈ N 0 , $$\bigl(1+p(t)\bigr)\Delta\bigl(\Delta^{\alpha}x(t)\bigr)+p(t) \Delta^{\alph... | Oscillation results for certain forced fractional difference equations with damping term | 10.1186/s13662-016-0798-2 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.