publicationDate stringlengths 10 10 | abstract stringlengths 0 37.3k | title stringlengths 1 5.74k | doi stringlengths 11 47 ⌀ |
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2018-03-01 | An active mass damper for vibration control of an oscillator with two translational degrees of freedom is presented along with the corresponding closed-loop control algorithm. The damper consists of two eccentrically rotating masses. In a preferred mode of operation, the masses rotate in opposite directions with a most... | Active vibration control of an oscillator with two translational degrees of freedom using centrifugal forces created by two eccentrically rotating masses | 10.1007/s40435-016-0280-8 |
2018-03-01 | The disk-shaft system is a power transmission system with several industrial applications. The shafts, depending on the mechanism application, can be connected by U-joints through different rotating axes. In spite of the many advantages, these joints transform a constant rotating speed into a variable output one. There... | Stability of a multi-body driveshaft system excited through U-joints | 10.1007/s11012-017-0784-0 |
2018-03-01 | The damping capacity of a VT6 titanium alloy sample is shown to depend on the thickness of a new designed Al–Ni–Y alloy coating during vibrodynamic tests at the first flexural mode resonance frequency. The coating 20–100 μm thick is found to decrease the vibrostresses in the weakest section of the sample by 9–31% at a ... | Damping Capacity of Coated Plane VT6 Titanium Alloy Samples | 10.1134/S0036029518030096 |
2018-03-01 | In this paper, we consider a porous thermoelastic system with a micro-heat dissipation and a nonlinear frictional damping. We establish an explicit and general decay rate result, using some properties of the convex functions and the multiplier method. Our result is obtained without imposing any restrictive growth assum... | On the long-time behavior of a nonlinear damped porous thermoelastic system with second sound | 10.1007/s13370-017-0536-2 |
2018-03-01 | In this paper, we are concerned with the asymptotic behavior of solutions to Euler-Korteweg equations with damping. We prove that the solutions time-asymptotically behave like the nonlinear diffusion wave, as in Hsiao and Liu (Commun Math Phys 143:599–605, 1992 ) and Nishihara (J Differ Equ 131:171–188, 1996 ). Moreove... | Convergence to nonlinear diffusion waves for solutions of Euler-Korteweg equations with damping | 10.1007/s00028-017-0389-z |
2018-03-01 | Due to increasing power demand, incorporation of prosumers, continuous expansion, competitive market and inherent limitations of alternating current, the management and operation of power system has become very complex. For economical, reliable and secure operation, the use of emerging technologies is unavoidable. Flex... | Optimal Allocation of Flexible AC Transmission System Controllers in Electric Power Networks | 10.1007/s41403-018-0035-2 |
2018-03-01 | To suppress the vibration of propeller blades and vibration transmission from the blades to bearings under broadband propeller force, a damping ring placed under the propeller hub is proposed. The configuration of the damping ring is introduced first. Then the analytical dynamic model of the damping ring is established... | Vibration transmission suppression for propeller-shaft system by hub-embedded damping ring under broadband propeller force | 10.1007/s11071-017-4037-5 |
2018-03-01 | Nonlinear behavior of a rotating bladed disk system is investigated at the critical speed, where the rotor internal damping starts to destabilize the rotor vibrations. A simple bladed Jeffcott model is suggested to study the Hopf bifurcation around the critical speed. The Euler–Bernoulli theory is employed to model the... | The stability and nonlinear analysis of a rotating bladed disk at the critical speed | 10.1007/s00419-017-1316-z |
2018-03-01 | Sand is rarely found clean in natural deposits and it’s usually in composition of gravel, clay and silt. The purpose of this paper is to examine the effect of stress induced anisotropy ( $$kc = \sigma^{\prime}_{1} /\sigma^{\prime}_{3} \ne 1$$ k c = σ 1 ′ / σ 3 ′ ≠ 1 ) as one of the most important factors affecting the ... | The Effect of Stress Induced Anisotropy on Shear Modulus and Damping Ratio of Mixed Sandy Soils | 10.1007/s40098-017-0236-8 |
2018-03-01 | In the present study, response-only system identification is explored towards estimating modal dynamic properties of buildings under earthquake excitation. Seismic structural response signals are adopted with two different implemented Operational Modal Analysis (OMA) techniques, namely a refined Frequency Domain Decomp... | Assessment of Frequency versus Time Domain enhanced technique for response-only modal dynamic identification under seismic excitation | 10.1007/s10518-017-0259-7 |
2018-03-01 | A theory of dynamic bending of beams made of functionally graded materials is presented. The refined theoretical model takes into account the shear and normal strains and stresses. The distribution of stresses in the beams in cylindrical bending at different vibration frequencies is considered. Their damping properties... | Dynamic properties of symmetric and asymmetric Beams made of Functionally Graded materials in bending | 10.1007/s11029-018-9723-y |
2018-03-01 | In this paper, a design method is proposed for a robust stabilizing fractional order proportional integral derivative (FOPID) controller for One Non-Integer Order Plus Time Delay plant (NIOPTD-I). The NIOPTD-I model is obtained after reducing the higher order continuous time process model. The FOPID controller is desig... | Design of FOPID controller for fractional-order plants with experimental verification | 10.1007/s40435-017-0305-y |
2018-03-01 | The chaotic characteristic of a system with vibro-impact nonlinear energy sink is studied here. An analytical method is developed to calculate Lyapunov exponent. The mechanism by which impact results in chaos is further clarified rather than only by the calculation of Lyapunov exponent. In addition, an approach to iden... | Chaotic characteristic of a linear oscillator coupled with vibro-impact nonlinear energy sink | 10.1007/s11071-017-4015-y |
2018-03-01 | The effect of borax, sewage sludge ash, silicon carbide, and perlite microparticles on the tensile, damping, and vibration characteristics of S-glass/epoxy composite laminates was examined Their damping and vibration properties were evaluated experimentally by using the dynamic modal analysis, identifying the response ... | Toughening Effect of Microscale Particles on the Tensile and Vibration Properties of S-Glass-Fiber-Reinforced Epoxy Composites | 10.1007/s11029-018-9724-x |
2018-03-01 | The last stages of powerful power gas turbines play an important role in the development of power and efficiency of the whole unit as well as in the distribution of the flow parameters behind the last stage, which determines the efficient operation of the exhaust diffusers. Therefore, much attention is paid to improvin... | Computational Study on the Effect of Shroud Shape on the Efficiency of the Gas Turbine Stage | 10.1134/S0040601518030011 |
2018-02-15 | The most promising technology in the field of semi-active suspension systems is the use of magnetorheological property of MR fluid, whose material behavior can be controlled through external magnetic field. Devices developed based on this principle are adaptive and controllable as desired for a specific application. It... | An approach for characterizing twin-tube shear-mode magnetorheological damper through coupled FE and CFD analysis | 10.1007/s40430-018-1066-z |
2018-02-01 | Diesel engine is inherently an unstable machine and requires a reliable control system to regulate its speed for safe and efficient operation. Also, the diesel engine may operate at fixed or variable speeds depending upon user’s needs and accordingly the speed control system should have essential features to fulfil the... | A Mathematical Model of Marine Diesel Engine Speed Control System | 10.1007/s40032-017-0420-8 |
2018-02-01 | We consider time discretizations of the Vlasov–HMF (Hamiltonian mean-field) equation based on splitting methods between the linear and nonlinear parts. We consider solutions starting in a small Sobolev neighborhood of a spatially homogeneous state satisfying a linearized stability criterion (Penrose criterion). We prov... | On Numerical Landau Damping for Splitting Methods Applied to the Vlasov–HMF Model | 10.1007/s10208-016-9333-9 |
2018-02-01 | The results of a theoretical and experimental investigation of the influence of damping and pitch plays on the dynamics of electromechanical systems in the zones of main, harmonic, and subharmonic resonances under parametrical disturbances are presented. Design models of electromechanical systems taking into account sp... | Dynamic Modes of Electromechanical Systems under Parametrical Disturbances | 10.3103/S106837121802013X |
2018-02-01 | To reveal some dynamic properties of the deploying process for the solar power satellite via an arbitrarily large phased array (SPS-ALPHA) solar receiver, the symplectic Runge-Kuttamethod is used to simulate the simplified model with the consideration of the Rayleigh damping effect. The system containing the Rayleigh d... | Dynamic modeling and simulation of deploying process for space solar power satellite receiver | 10.1007/s10483-018-2293-6 |
2018-02-01 | This study presents an extended unit load method in which the displacement of a chosen degree of freedom (DOF) in a nonlinear structure under arbitrary dynamic loading is expressed as an integration of mutual strain energy density over a continuum domain. This new integral formulation for the displacement of a chosen D... | Topology optimization of nonlinear structures with damping under arbitrary dynamic loading | 10.1007/s00158-017-1765-6 |
2018-02-01 | The effects of damping on the bending and twisting modes of flax fibre-reinforced polypropylene composites are investigated. The laminate was manufactured by a vacuum bagging process; its dynamic behaviour was then found from the vibration measurements of a beam test specimen using an impulse hammer technique to freque... | Influence of Damping on the Bending and Twisting Modes of Flax Fibre-reinforced Polypropylene Composite | 10.1007/s12221-018-7588-7 |
2018-02-01 | For seismic assessment of wind turbines in seismically-active areas, International Standards and Guidelines allow the combination of two uncoupled analyses under environmental and earthquake loads, respectively. The separate earthquake response is generally computed including an additional aerodynamic damping in the st... | On time-domain uncoupled analyses for offshore wind turbines under seismic loads | 10.1007/s10518-017-0191-x |
2018-02-01 | Temporal variations of the main hydrological variables over 16 years were systematically investigated based on the results from an integrated hydrological modeling at the Sagehen Creek watershed in northern Sierra Nevada. Temporal scaling of these variables and damping effects of the hydrological system as well as its ... | Analysis of temporal variation and scaling of hydrological variables based on a numerical model of the Sagehen Creek watershed | 10.1007/s00477-017-1421-0 |
2018-02-01 | Objective The present work adopted damped vibration absorbers (DVAs) to attenuate multi-mode longitudinal vibration of the hollow shaft. The dynamic behavior of a shaft is analyzed for the guidance to the initial parameter design of DVAs and the parameters of DVAs are optimized. Subsequently, specific structures of DVA... | Damped Vibration Absorbers for Multi-mode Longitudinal Vibration Control of a Hollow Shaft | 10.1007/s42417-018-0002-y |
2018-02-01 | We present an iterative procedure based on a damped inexact Newton iteration for solving linear complementarity problems. We introduce the method in the framework of a popular problem arising in mechanical engineering: the analysis of cavitation in lubricated contacts. In this context, we show how the perturbation and ... | An inexact Newton method for solving complementarity problems in hydrodynamic lubrication | 10.1007/s10092-018-0244-9 |
2018-01-23 | The excitation and damping of the transversal coronal loop oscillations and quantitative relation between damping time, damping property (damping time per period), oscillation amplitude, dissipation mechanism and the wake phenomena are investigated. The observed time series data with the Atmospheric Imaging Assembly (A... | Observations of Excitation and Damping of Transversal Oscillations in Coronal Loops by AIA/SDO | 10.1007/s11207-018-1240-6 |
2018-01-02 | Transparent soil, manufactured with transparent granular particles and pore fluid with matching refractive index, used to mimic the behavior of natural saturated soil, is widely used in visualization model tests. The properties of transparent soils are not only affected by granular particles’ characteristics, but also ... | Investigation on shear modulus and damping ratio of transparent soils with different pore fluids | 10.1007/s10035-017-0779-5 |
2018-01-01 | This chapter deals with the methods of estimating damping in offshore structures. Different types of damping models, their comparison, and suitability to offshore structures are discussed in detail. Example problems are solved, and estimation of damping using different models is explained. | Damping in Offshore Structures | 10.1007/978-981-10-6089-2_4 |
2018-01-01 | This chapter deals with introduction to structural dynamics and its application to offshore structures. Basics of single-degree of freedom are discussed to highlight the conventional mathematical model of single-degree of freedom. Free vibration analysis and forced vibration analysis are discussed with focus on few imp... | Introduction to Structural Dynamics | 10.1007/978-981-10-6089-2_3 |
2018-01-01 | This chapter analyzes the basic principle of passive damping with shunted piezoelectric transducers. Resistive shunting and inductive shunting are examined successively. The various ways of tuning the inductor (maximum stability and equal peak design) are carefully reviewed, and the robustness with respect to the shunt... | Passive Damping with Piezoelectric Transducers | 10.1007/978-3-319-72296-2_5 |
2018-01-01 | Rock dynamic characteristics are important factors influencing the long-term stability of rock masses. In addition, they are important parameters for seismic response analysis and safety evaluation. In this study, a solution was discussed for the evaluation of the damping coefficient of rock masses under cyclic loading... | Experimental Investigations of Rock Dynamical Characteristics Under Cyclic Loading | 10.1007/978-981-13-0113-1_19 |
2018-01-01 | Present works deal with the insight into the friction-induced stick-slip vibration which takes place by virtue of the difference in the values of static and kinetic friction between the rubbing surfaces, which causes decrease in friction force with velocity. The produced intermittent motion is objectionable as it is th... | Circumvention of Friction-Induced Stick-Slip Vibration by Modeling and Simulation | 10.1007/978-981-10-5903-2_174 |
2018-01-01 | An active mass damper utilizing rotating masses to damp the vibrations of an oscillator with two translational degrees of freedom in a horizontal plane and one rotational degree of freedom about a vertical axis is presented along with a corresponding closed-loop control algorithm. The damper consists of two masses rota... | Active Vibration Control of a Three Degree of Freedom Oscillator Using Two Eccentrically Rotating Masses | 10.1007/978-3-319-67443-8_52 |
2018-01-01 | It is noted that the most important parameters of an earthquake ground motions are its maximum motion, predominant period, and Effective duration effective durations [524]. | Representation of Seismic Ground Motions | 10.1007/978-3-319-40358-8_10 |
2018-01-01 | This chapter analyzes linear single-degree-of-freedom systems and their response to harmonic, impulsive and periodic excitations. The response to such excitations is important because it provides insight into how the system will respond to other types of forces. Finally also the response to earthquake records is consid... | SDOF Systems | 10.1007/978-3-319-72541-3_2 |
2018-01-01 | The aim of this work is to consider the internal stabilization of a nonlinear coupled system of two Korteweg–de Vries equations in a finite interval under the effect of a very weak localized damping. The system was introduced by Gear and Grimshaw to model the interactions of two-dimensional, long, internal gravity wave... | Stabilization of the Gear–Grimshaw System with Weak Damping | 10.1007/s10883-017-9363-x |
2018-01-01 | The main issue of this chapter is the notion of energy of solutions, a very effective tool for the treatment of nonstationary or evolution models. We introduce energies for different models and explain conservation of energies, if possible. Sometimes, the choice of a suitable energy seems to be a miracle, sometimes one... | The Notion of Energy of Solutions: One of the Most Important Quantities | 10.1007/978-3-319-66456-9_11 |
2018-01-01 | The control challenges of LCL -type grid-connected inverter arise from the resonance problem. At the resonance frequency, the LCL filter resonance causes a sharp phase step down of −180° with a high resonance peak. This resonance peak would easily lead to system instability and should be damped. In this chapter, the re... | Resonance Damping Methods of LCL Filter | 10.1007/978-981-10-4277-5_4 |
2018-01-01 | This chapter focuses on collocated systems. The property of alternating poles and zeros is used to develop single-input single-output active damping schemes with guaranteed stability for various actuator and sensor types. The following controller are examined: Lead controller, Direct Velocity Feedback (DVF), Positive P... | Active Damping with Collocated System | 10.1007/978-3-319-72296-2_7 |
2018-01-01 | It is well known that the friction between interfaces at bolted joints plays a major role in the characterization of damping. Friction can be either induced by macroslip or microslip. The aim of this chapter is to model and quantify the dissipated energy by microslip in the joints in order to compute the damping ratio.... | Microslip Induced Damping in the Contact of Nominally Flat Surfaces with Geometric Defects | 10.1007/978-3-319-56818-8_19 |
2018-01-01 | A novel active mass damper, the twin rotor damper (TRD), was presented in previous research, including control algorithms for monofrequent vibrations. In this paper, the steady-state damping performance is evaluated by applying a harmonic excitation force to a single degree of freedom (SDOF) oscillator with and without... | An Analytic Comparison Regarding Steady-State Damping Performance Between the Twin Rotor Damper and a Dynamic Vibration Absorber | 10.1007/978-3-319-67443-8_48 |
2018-01-01 | In this paper, we derive the global existence of smooth solutions of the 3D incompressible Euler equations with damping for a class of large initial data, whose Sobolev norms H ^ s can be arbitrarily large for any s ≥ 0. The approach is through studying the quantity representing the difference between the vorticity and... | A class of large solutions to the 3D incompressible MHD and Euler equations with damping | 10.1007/s10114-016-6271-z |
2018-01-01 | Control strategy of unified power flow controller (UPFC) utilizing dq decoupling control is deduced in this paper, which can closely follow the control orders of the active and reactive power. The subsynchronous resonance (SSR) characteristics of a series compensated system equipped with UPFC are studied, and the resul... | Subsynchronous resonance and its mitigation for power system with unified power flow controller | 10.1007/s40565-017-0283-2 |
2018-01-01 | Is it simpler? In most cases, it is. Remember the difficulty you faced by working solely in the time domain, in the previous chapter (Chap. 2 ), in solving a differential equation with impulsive excitation? Except for these odd cases, time domain analysis is usually simpler. In this chapter, we discuss how linear circ... | Circuit Analysis Without Transforms | 10.1007/978-981-10-6919-2_7 |
2018-01-01 | The grids for transmission and distribution of electric energy have an ever-increasing share of static power converters. They include the source-side converters, the bus converters, and the load-side converters. Typical source-side converters are the inverters that collect the electric energy from the wind power plants... | Synchronization and Control | 10.1007/978-3-319-73278-7_8 |
2018-01-01 | The universal dispersion model is a collection of dispersion models (contributions to the dielectric response) describing individual elementary excitation in solids. All contributions presented in this chapter satisfy the basic conditions that follow from the theory of dispersion (time reversal symmetry, Kramers–Kronig... | Universal Dispersion Model for Characterization of Thin Films Over Wide Spectral Range | 10.1007/978-3-319-75325-6_3 |
2018-01-01 | This chapter presents briefly an analytical example of implementing the dual function EH/TVA theory developed in Chaps. 5 and 6 on Vibration control a more realistic application. The response of an electronic box, vibrating at its resonance frequency, is optimally attenuated with the help of the proposed EH/TVA. The wo... | Example of Vibration Suppression of Electronic Box Using Dual Function EH/TVA | 10.1007/978-3-319-69442-9_7 |
2018-01-01 | The forced resonant vibrations and vibrational heating of viscoelastic plates with actuators are modeled considering geometrical nonlinearity and transverse shear. An approximate analytical solution of the problem is obtained for a hinged rectangular plate by the Bubnov–Galerkin method. The effect of geometrical nonlin... | Forced Vibrations and Dissipative Heating of Hinged Flexible Viscoelastic Rectangular Plates with Actuators Under Shear Deformation | 10.1007/s10778-018-0862-6 |
2018-01-01 | For ordinary people, mechanical damping is the attenuation of a motion over time under possible eventual external actions. The phenomenon is produced by the loss or dissipation of energy during motion and thus time. The concept of real time is therefore at the center of the phenomenon of damping and given the recent sc... | Damping in Materials and Structures: An Overview | 10.1007/978-3-319-77504-3_1 |
2018-01-01 | Active methods for damping the oscillations and limiting the dynamic loads of spring machine elements that are implemented owing to the additional force effects created by an electric drive providing the reduction of maximum work in spring gears of operated machinery were studied. The main parameters and energy charact... | On the Use of Electromechanical Systems for Limiting Dynamic Loads in Spring Mechanisms | 10.3103/S1068371218010121 |
2018-01-01 | The assumptions made to derive the equations of motion in a FE environment are similar to those of the minimal model. | Optimization of Finite Element Models of Disc Brakes | 10.1007/978-3-319-62713-7_4 |
2018-01-01 | This chapter presents an experimentally validated distributed parameter model Distributed parameter model , of a base-excited cantilever bimorph, without any tip mass Tip mass . Euler–Bernoulli beam theory Euler-Bernoulli beam theory and the well-known constitutive piezoelectric equation are used to derive the model. T... | Distributed Parameter Modelling and Experimental Validation | 10.1007/978-3-319-69442-9_3 |
2018-01-01 | The problem of synthesizing the control of the intellectual suspension of a vehicle is regarded as a problem of synthesizing optimal law of the Lagrangian system parametric control. There has been developed a method for synthesizing optimal law parametric control in conditions of uncontrollable external exposures, what... | Combined Maximum Principle as the Basis of Intellectualization of Control Systems for a Suspension of Vehicles | 10.1007/978-3-319-68321-8_16 |
2018-01-01 | In a nonlinear dynamic analysis, the most popular way of representing the inherent damping exhibited by the structure is by adopting the classical Rayleigh damping model. Although a large number of studies have identified issues with this model, it remains the most popular choice in the currently available non-linear t... | Inherent Damping in Nonlinear Time-History Analyses: A Recommended Modelling Approach | 10.1007/978-3-319-62099-2_4 |
2018-01-01 | The effect of extension ratio on the structure and property of expanded polytetrafluoroethylene (ePTFE) has been decisively studied. ePTFE is unique with its porous fibrillar network structure connected by nodes and also with its degree of orientation which increases with increases in extension ratio. It is found that ... | Expanded polytetrafluoroethylene as an auxetic material: effect of extension ratio on its structure and properties | 10.1007/s13726-017-0581-6 |
2018-01-01 | The paper is focused on study of new type of vibration control damper which has been designed, machined, assembled, and calibrated by authors. In typical oil dampers, attenuation force is generated by fixed orifices, where oil passes from one chamber to another. More advanced designs include variable orifices, where it... | Study on Mechanical Characteristics in Electromechanical Disengaging Damper | 10.1007/978-3-319-68619-6_35 |
2018-01-01 | We developed a passive haptic technique, using the brake of a DC motor, to create a greater perception of impulse force. We found that when using the brake of a DC motor, delivering two short pulses immediately prior to the main brake significantly increases the operator’s perception of impulse force. This finding was ... | Passive Haptics: Pulsive Damping Brake for Greater Impulse Perception | 10.1007/978-981-10-4157-0_37 |
2018-01-01 | This paper presents simulation of two level voltage source inverter based on SVPWM (space vector pulse width modulation) technique. The concept of two level inverter is used to reduce the harmonic distortion in output voltage waveform without decreasing the inverter output power. Simulation results are presented to rea... | Simulation of Three Phase Voltage Source Inverter Based on SVPWM Technique | 10.1007/978-3-319-63085-4_19 |
2018-01-01 | This chapter summarizes a few projects which have been conducted in the early days of the Active Structures Laboratory of ULB (mostly before 2002) in various fields including active damping, precision positioning, and vibroacoustics; all of them include numerical and experimental results. After a few words about digita... | Applications | 10.1007/978-3-319-72296-2_14 |
2018-01-01 | Machine tools in actual construction, being related to the trend towards to machine tools of high productivity and increased precision and having in view the context of transition to Industry 4.0, have to be studied deeply in the stage of conception and also in that of exploiting. For both situations, the modeling and ... | Dynamic Definition of Machine Tool Feed Drive Models in Advanced Machine Tools | 10.1007/978-3-319-89563-5_9 |
2018-01-01 | An equivalent lumped-parameter model of a beam-like piezoelectric TMD TMD (tune mass damper) under short-circuited conditions is analyzed. This enabled the calculation of the optimal viscous damping required by a TMD according to the classical theory for a given application. This hypothetical optimally damped, electri... | A Theoretical Analysis of an ‘Electromechanical’ Beam Tuned Mass Damper | 10.1007/978-3-319-69442-9_5 |
2018-01-01 | The purpose of this chapter is to present a computational tool for the analysis of the vibration behavior of jointed structures whose dynamics are considered nonlinear under the operating conditions of interest. The method is based on the concept of nonlinear modes. The definition of nonlinear modes is here adjusted in... | Nonlinear Modal Analysis and Modal Reduction of Jointed Structures | 10.1007/978-3-319-56818-8_29 |
2018-01-01 | The topology optimization algorithm of viscoelastic material microstructure based on bi-directional evolutionary structural optimization (BESO) method is proposed for macroscopic damping characteristics of the structures. The optimization aims to obtain the optimal topologies of the material microstructures within give... | Topology Optimization of Viscoelastic Materials for Maximizing Damping and Natural Frequency of Macrostructures | 10.1007/978-3-319-67988-4_131 |
2018-01-01 | Recently, Direct Current (DC) magnetic field processing of materials has found widespread applications in metallurgy, especially in metals and semiconductor industries. The main goal is to control the behavior of melts during solidification so as to improve process performance and achieve better quality products. DC ma... | High Magnetic Field Processing of Metal Alloys | 10.1007/978-3-319-94842-3_6 |
2018-01-01 | The chapter analyzes the structural seismic analysis methods. The four common analysis method are illustrated (Linear static, linear dynamic, nonlinear static, and nonlinear dynamic analyses). Additionally, the direct displacement-based seismic design procedure is discussed in detail. | Methods of Analysis | 10.1007/978-3-319-72541-3_14 |
2018-01-01 | Cooperation between surgeon and robot is one of the key technologies that limit the robot to be widely used in orthopedic clinics. In this study, the evolution of human-robot cooperation methods and the control strategies for typical human-robot cooperation in robot-assisted orthopedics surgery were reviewed at first. ... | Intelligent Control for Human-Robot Cooperation in Orthopedics Surgery | 10.1007/978-981-13-1396-7_19 |
2018-01-01 | Broadband impact excitation in structural dynamics is a common technique used to detect and characterize nonlinearities in mechanical systems since it excites many frequencies of a structure at once. Nonstationary time signals from transient ring-down measurements require time-frequency analysis tools to observe variat... | Parameter Estimation via Instantaneous Frequency and Damping from Transient Ring-Down Data | 10.1007/978-3-319-56818-8_21 |
2018-01-01 | In this chapter, an analytical model is developed for the motion response and wave attenuation of a raft-type wave-powered desalination device. The desalination module of the device is simplified as a Power Take-Off (PTO) system. The analytical solution of diffraction and radiation problem of multiple two-dimensional r... | Analytical Study on Hydrodynamic Characteristics | 10.1007/978-981-10-5517-1_2 |
2018-01-01 | During the last decades, biomimetics has attracted increasing attention as well from basic and applied research as from various fields of industry. Biomimetics has a high innovation potential and offers the possibility for the development of sustainable technical products and production chains. Novel sophisticated meth... | Biomechanics and Functional Morphology of Plants—Inspiration for Biomimetic Materials and Structures | 10.1007/978-3-319-79099-2_18 |
2018-01-01 | Stated choice (SC) experiments are the most popular method to estimate the value of travel time changes (VTTC) of a population. In the simplest VTTC experiment, the SC design variables are time changes and cost changes. The levels of these variables create a particular setting from which preferences are inferred. This ... | Understanding valuation of travel time changes: are preferences different under different stated choice design settings? | 10.1007/s11116-016-9716-4 |
2018-01-01 | The chapter introduces the energy balance equation of a generic system. Attention is given to damping energy and plastic energy (Vakakis et al., Nonlinear targeted energy transfer in mechanical and structural systems, vol 156. Springer, Dordrecht, 2008). Two methods are introduced to estimate the damping on the structu... | Energy Dissipation | 10.1007/978-3-319-72541-3_5 |
2018-01-01 | Carbon nanotube (CNT) reinforced acrylonitrile-butadiene-styrene (ABS) composites fabricated using a fused deposition modeling approach were characterized for mechanical strain energy storage and dissipation capabilities. Dynamic mechanical analysis (DMA) was performed to quantify loss factor as a function of applied d... | Strain Energy Dissipation Mechanisms in Carbon Nanotube Composites Fabricated by Additive Manufacturing | 10.1007/978-3-319-62834-9_5 |
2018-01-01 | We consider a parameter-dependent family of damped hyperbolic equations with interesting limit behavior: the system approaches steady states exponentially fast and for parameter to zero, the solutions converge to that of a parabolic limit problem. We establish sharp estimates and elaborate their dependence on the model... | An Asymptotic Preserving Mixed Finite Element Method for Wave Propagation in Pipelines | 10.1007/978-3-319-91545-6_39 |
2018-01-01 | This chapter describes the modified Costas loop for BPSK. While the conventional Costas loop operated with real signals, the modified circuit works with the so-called pre-envelope signal. This is a complex signal, also referred to as “analytical signal.” The real input signal of this Costas loop is converted to the pre... | Modified Costas Loop for BPSK | 10.1007/978-3-319-72008-1_5 |
2018-01-01 | This chapter addresses the problem of vibration isolation; the excitation may be harmonic or wide band. The chapter begins with the single-axis passive isolation: linear viscous isolator and relaxation isolator; an electromagnetic realization of the relaxation isolator is discussed. Next, the active isolation is consid... | Vibration Isolation | 10.1007/978-3-319-72296-2_8 |
2018-01-01 | The purpose of this chapter is to present a comprehensive overview of the previous research published relevant to the book’s aims and objectives introduced in Chap. 1. Due to the interdisciplinary nature of the field, the chapter begins with a short background highlighting the necessity of energy harvesting Energy harv... | Overview of Vibration Energy Harvesting | 10.1007/978-3-319-69442-9_2 |
2018-01-01 | Particle damping is a passive vibration damping technology, with good energy consumption, simple structure, low cost, easy operation and is suitable for use in harsh environment. In this paper, the particle collision is taken as the object of study. The Hertz theory of contact mechanics is used to analyze the process o... | Energy Dissipation Analysis of Two Particles with Different Volume Under Fixed Mass | 10.1007/978-981-10-6553-8_92 |
2018-01-01 | The paper considers random fluctuation in damping coefficient of an electrostatically driven micro/nanoelectromechanical (M/NEMS) resonator and analyzes occurrence of stochastic resonance. The resonator device has been modeled as a damped harmonic oscillator with additive Gaussian damping noise characterized by exponen... | Damping Noise Induced Stochastic Resonance Improves Q-Factor of M/NEMS Resonators | 10.1007/978-981-10-8240-5_58 |
2018-01-01 | The flexibility of the powertrain leads to the driveline oscillating, which will deteriorate the drivability and comfort of the vehicle, in transient condition such as pedal tip in/out maneuver and regenerative braking. This problem has received increasing interest due to the higher drivability demand of drivers with t... | Shaft Torque Compensation for Electric Vehicle Driveline Oscillation Active Damping with Feedforward and PID Feedback Controller | 10.1007/978-981-10-6553-8_52 |
2018-01-01 | With the increase of running speed and axel load of trains, the structure-borne noise emanating from the railway bridges is more and more serious. The constrained layer damping can achieve an obvious reduction of vibration and noise of the treated structure in a wide frequency range by means of dissipating the vibratio... | Computation Model for Structure-Borne Noise from Railway Bridge with CLD | 10.1007/978-981-10-4508-0_41 |
2018-01-01 | The paper presents results of researches conducted on test bed of rotor system. The aim of research was to show how resonant frequency and amplitude might be changed by damping washers. Article presents an example of approach to the problem conducted in laboratory conditions, the results of which can be easily transfer... | The Impact Estimation of Damping Foundations in Dynamics of the Rotor System in Non-stationary States | 10.1007/978-3-319-61927-9_7 |
2018-01-01 | The physical mass and damping of a haptic device contribute features that can be considered parasitic in that they potentially mask the virtual environment the user is intended to feel. On the other hand, users are generally able to adapt to the mechanical properties of physical tools and concentrate on the dynamics of... | Haptic Scene Analysis: Mechanical Property Separation Despite Parasitic Dynamics | 10.1007/978-3-319-93445-7_21 |
2018-01-01 | The overall aims of the chapter are twofold: (i) to present two alternatives modelling techniques for the uniform-section beam systems in Fig. 4.1 and (ii) to use these techniques in a theoretical study of a bimorph. The chapter presents the use of DSM for the solution of such a problem and illustrates its applicabili... | Modelling of Energy Harvesting Beams Using Dynamic Stiffness Method (DSM) | 10.1007/978-3-319-69442-9_4 |
2018-01-01 | Nonlinear energy sink (NES) refers to a lightweight nonlinear device that is attached to a primary linear or weakly nonlinear system for passive energy localization into itself. In this paper, the dynamics of 1-dof and 2-dof NES with geometrically nonlinear damping is investigated. For 1-dof NES, an analytical treatmen... | Dynamics of 1-dof and 2-dof energy sink with geometrically nonlinear damping: application to vibration suppression | 10.1007/s11071-017-3906-2 |
2018-01-01 | The paper presents an analysis of Bagley-Torvik system under the influence of frequency noise. The Bagley-Torvik system is characterised by a fractional order damping. Our analysis shows that the system exhibits a new type of stochastic resonance for noises with low correlation rates. This is in addition to the usual s... | Stochastic Resonance in Bagley-Torvik Equation | 10.1007/978-981-10-8240-5_56 |
2018-01-01 | The capacitor-current-feedback active-damping is an effective approach for damping the resonance peak of the LCL filter. When the LCL -type grid-connected inverter is digitally controlled, the control delay will be generated. This will result in different behavior of the capacitor-current-feedback active-damping from t... | Design Considerations of Digitally Controlled LCL-Type Grid-Connected Inverter with Capacitor-Current-Feedback Active-Damping | 10.1007/978-981-10-4277-5_8 |
2018-01-01 | Damping in structures is an important aspect from the vibration control and dynamic stability point of views. These days, significant emphasis is placed on the damping in composite structures due to involvement of different mechanisms for controlling damping at micro (fibre-matrix interface, fibre orientation etc.) and... | Effect of Cross-Section and Discontinuities on Damping Enhancement in Composites: An Experimental Study | 10.1007/978-3-319-67443-8_62 |
2018-01-01 | In order to achieve more realistic structural parameter identification, it is inevitable to account for uncertainties. The present paper proposes a stochastic identification process to identify propagation parameters such as the wavenumber, the damping loss factor, and the wave attenuation, in presence of uncertainties... | Inhomogeneous Wave Correlation for Propagation Parameters Identification in Presence of Uncertainties | 10.1007/978-3-319-66697-6_80 |
2018-01-01 | Chapter 3 describes the development of the research area which can be called “chemical periodical processes”. It emphasizes the phenomenon of four books: German 1913 book, English 1926 book, French 1934 book, and Russian (Soviet) 1938 book “Physico-chemical periodical processes”. This list can be enriched by including ... | A Research Area | 10.1007/978-3-319-95108-9_3 |
2018-01-01 | Acoustic cavitation is the formation and subsequent violent collapse of bubbles in liquid irradiated with intense ultrasound. Ultrasound is radiated by a vibrating plate connected to ultrasonic transducers made of piezoelectric materials driven by electrical power. Microscopic mechanism for vibration of piezoelectric m... | Acoustic Cavitation | 10.1007/978-3-319-68237-2_1 |
2018-01-01 | As compared to the conventional approach of trial solutions for solving the differential equation governing the transient response of RLC networks, we present here a different approach which is totally analytical. We also show that the three cases of damping, viz. overdamping, critical damping and underdamping, can be ... | Transient Response of RLC Networks Revisited | 10.1007/978-981-10-6919-2_8 |
2018-01-01 | We propose an analytical algorithm to study harmonic oscillation Harmonic oscillation of a rectangular elastic plate in an incompressible fluid Incompressible fluid , with varying pressure conditions. Application of the two-dimensional Fourier transform leads to a two-dimensional integral equation with a two-dimensiona... | Dynamic Properties of Thin-Walled Structures Under Changing Pressure Conditions in the Contact Fluid | 10.1007/978-3-319-56579-8_8 |
2018-01-01 | Conventionally, fixed-structure feedback controllers are designed by model-based approaches. However, such controllers are not necessarily ideal and optimal when connecting with the actual plant because of the existence of modeling uncertainty. In this paper, a paralleled damping controller as well as a novel hybrid re... | Damping controller design for nanopositioners: A hybrid reference model matching and virtual reference feedback tuning approach | 10.1007/s12541-018-0002-6 |
2018-01-01 | The operating principle of the conventional Costas loop for BPSK is explained (other types of Costas loops for BPSK are discussed in chapters 5 and 8 ). Dynamic behavior of the loop is described using a novel mathematical model developed by the author. This new model allows the designer of a Costas loop to explicitly c... | Conventional Costas Loop for BPSK, Dynamic Analysis, Design Procedure, and Simulation | 10.1007/978-3-319-72008-1_3 |
2018-01-01 | This chapter presents a recently proposed nonlinear system identification methodology that has the promise of broad applicability based on a global–local approach. In the proposed nonlinear system identification methodology, measured time series are decomposed in terms of approximately monochromatic dominant intrinsic ... | Elements of a Nonlinear System Identification Methodology of Broad Applicability with Application to Bolted Joints | 10.1007/978-3-319-56818-8_20 |
2018-01-01 | In this paper simplified expressions for assessing fundamental frequency and modal damping of high-rise buildings taking into account the soil-structure interaction (SSI) are proposed. To this end, several steps have been followed. First, a 3DoF model is formulated making use of dimensionless parameters. Second, the 3D... | Effects of Soil-Structure in High-Rise Buildings by Means of Dimensionless Analysis and a Simplified Model | 10.1007/978-3-319-59471-2_158 |
2018-01-01 | In this research, a low damping force shear-mode magneto-rheological (MR) damper that can replace conventional passive damper of a front-loading washing machine is designed and experimentally evaluated. In the design of the MR damper, required damping force, off-state friction force, size, and low cost of the MR damper... | Design and Evaluation of a Shear-Mode MR Damper for Suspension System of Front-Loading Washing Machines | 10.1007/978-981-10-7149-2_74 |
2018-01-01 | In this chapter we use analytic differential equations to solve for currents and voltages in various circuits. For simpler circuits we end up with differential equations of first order, where only initial conditions are needed; and for more complicated circuits we end up with differential equations of second order wher... | Differential Equation Solution to Circuit Problems | 10.1007/978-3-319-71437-0_3 |
2018-01-01 | From our detailed consideration of induction in moving conductors, we became aware of the existence of the Lorentz force $$\displaystyle\boldsymbol{{F}}=Q(\boldsymbol{{u}}\times\boldsymbol{{B}}) $$ ( F for example in newton (=1 N), B in V s/m^2 (=1 T), u in m/s, Q in A s). This force acts on a charge Q which is moving ... | Forces in Magnetic Fields | 10.1007/978-3-319-50269-4_8 |
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