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Stress ratio (fatigue) Calculator

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✖Minimum compressive stress in a cyclic load during fatigue.ⓘ Minimum compressive stress [σ_min]			+10% -10%
✖Maximum Tensile Stress is the maximum amount of force per unit area acting onto the specimen so that it to prone to getting stretched.ⓘ Maximum Tensile Stress [σ_tmax]			+10% -10%

✖Stress ratio is the the ratio of minimum and maximum stress amplitudes of a stress cycle in fatigue.ⓘ Stress ratio (fatigue) [R]

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Stress ratio (fatigue) Solution

STEP 0: Pre-Calculation Summary

Formula Used

Stress ratio = Minimum compressive stress/Maximum Tensile Stress
R = σ_min/σ_tmax
This formula uses 3 Variables

Variables Used

Stress ratio - Stress ratio is the the ratio of minimum and maximum stress amplitudes of a stress cycle in fatigue.
Minimum compressive stress - (Measured in Pascal) - Minimum compressive stress in a cyclic load during fatigue.
Maximum Tensile Stress - (Measured in Pascal) - Maximum Tensile Stress is the maximum amount of force per unit area acting onto the specimen so that it to prone to getting stretched.

STEP 1: Convert Input(s) to Base Unit

Minimum compressive stress: 40 Megapascal --> 40000000 Pascal (Check conversion here)
Maximum Tensile Stress: 50 Megapascal --> 50000000 Pascal (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R = σ_min/σ_tmax --> 40000000/50000000

Evaluating ... ...

R = 0.8

STEP 3: Convert Result to Output's Unit

0.8 --> No Conversion Required

FINAL ANSWER

0.8 <-- Stress ratio

(Calculation completed in 00.008 seconds)

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Created by Hariharan V S

Indian Institute of Technology (IIT), Chennai

Hariharan V S has created this Calculator and 25+ more calculators!

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Stress ratio (fatigue) Formula

LaTeX Go

Stress ratio = Minimum compressive stress/Maximum Tensile Stress
R = σ_min/σ_tmax

Fatigue

Fatigue is a form of failure that occurs in structures subjected to dynamic and fluctuating stresses (e.g., bridges, aircraft, and machine components). Under these circumstances it is possible for failure to occur at a stress level considerably lower than the tensile or yield strength for a static load.

How to Calculate Stress ratio (fatigue)?

Stress ratio (fatigue) calculator uses Stress ratio = Minimum compressive stress/Maximum Tensile Stress to calculate the Stress ratio, Stress ratio (fatigue) is the ratio of minimum and maximum stress amplitudes. Stress ratio is denoted by R symbol.

How to calculate Stress ratio (fatigue) using this online calculator? To use this online calculator for Stress ratio (fatigue), enter Minimum compressive stress (σ_min) & Maximum Tensile Stress (σ_tmax) and hit the calculate button. Here is how the Stress ratio (fatigue) calculation can be explained with given input values -> 0.8 = 40000000/50000000.

FAQ

What is Stress ratio (fatigue)?

Stress ratio (fatigue) is the ratio of minimum and maximum stress amplitudes and is represented as R = σ_min/σ_tmax or Stress ratio = Minimum compressive stress/Maximum Tensile Stress. Minimum compressive stress in a cyclic load during fatigue & Maximum Tensile Stress is the maximum amount of force per unit area acting onto the specimen so that it to prone to getting stretched.

How to calculate Stress ratio (fatigue)?

Stress ratio (fatigue) is the ratio of minimum and maximum stress amplitudes is calculated using Stress ratio = Minimum compressive stress/Maximum Tensile Stress. To calculate Stress ratio (fatigue), you need Minimum compressive stress (σ_min) & Maximum Tensile Stress (σ_tmax). With our tool, you need to enter the respective value for Minimum compressive stress & Maximum Tensile Stress and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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