README.md

metadata

title: Rebar Stress-Strain Calculator
colorFrom: pink
colorTo: red
sdk: gradio
sdk_version: 5.47.2
app_file: app.py
pinned: false

Rebar Stress-Strain Calculator with Natural Language Explanation

A mechanical engineering tool for calculating stress and strain in reinforcing steel bars (rebar) under tensile loading, with natural language explanations of the results.

How it works

1. Select a rebar grade (US ASTM standards) and diameter
2. Enter test parameters: applied force, gauge length, and measured elongation
3. Choose calculation type (elastic or plastic analysis)
4. Click Calculate to see numerical results, visualizations, and natural language explanation

Features

• Pre-loaded US rebar grades (Grade 40, 60, 75, 80)
• Standard diameter selections (#3 through #18)
• Custom diameter input option
• Real-time stress-strain calculations
• Interactive stress-strain curve visualization
• Safety factor analysis with color-coded warnings
• Natural language explanation of results
• Material state assessment (elastic, plastic, or failure)

Results Provided

• Stress and strain calculations
• Measured elastic modulus
• Yield and ultimate safety factors
• Visual stress-strain curve with current state
• Safety factor bar chart
• Plain English explanation of what the numbers mean
• Raw JSON data for advanced users

Usage

Input the tensile force applied to a rebar specimen, along with its dimensions and the measured elongation. The calculator will determine stress, strain, safety factors, and provide a comprehensive explanation of whether the rebar is safe, yielding, or at risk of failure.

Tips for accurate results:

• Ensure consistent units (kN for force, mm for dimensions)
• Use realistic values based on actual test conditions
• Select the appropriate rebar grade for your application
• Check safety factors: values above 1.5 indicate safe operation