Quick Answer
Calculate ASME VIII Div 2 Annex 5 Cylindrical Shell Strain-Life Fatigue Life Estimator
Calculator
Result Interpretation
ASME VIII Div 2 Annex 5 Cylindrical Shell Strain-Life Fatigue Life Estimator Calculator computes Fatigue Life (Cycles) in dimensionless using the defined engineering formula and the input values provided.
Worked Example
Verified calculation
Given:
- Fatigue Strength Exponent = -0.12
- Total Strain Range = 0.0015
- Fatigue Strength Coefficient = 0.85
Expected Result:
- Fatigue Life (Cycles) = 2.8377917340464E+25
Engineering Interpretation:
Under the given input conditions, the calculated result is: Fatigue Life (Cycles) = 2.8377917340464E+25 dimensionless.
The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.
Formula / Method
Cycles = pow((total strain range / (2.0 * fatigue strength coefficient)), (1.0 / fatigue strength exponent))Formula family: formula_pressurevessel_cylindrical_shell_fatigue_life_estimator_asme_viii_div_2_annex_5
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| strain_range | Total Strain Range | INPUT | Total Strain Range |
| coefficient_a | Fatigue Strength Coefficient | INPUT | Fatigue Strength Coefficient |
| exponent_b | Fatigue Strength Exponent | INPUT | Fatigue Strength Exponent |
| fatigue_life | Fatigue Life (Cycles) | OUTPUT | Fatigue Life (Cycles) |
Calculation Steps
- Enter the total strain range in dimensionless.
- Enter the fatigue strength coefficient in dimensionless.
- Enter the fatigue strength exponent in dimensionless.
- Step 1: Compute fatigue life (cycles).
- Read the fatigue life (cycles) (dimensionless) from the results.
Engineering Summary
Calculate ASME VIII Div 2 Annex 5 Cylindrical Shell Strain-Life Fatigue Life Estimator
Frequently Asked Questions
What does this calculator calculate?
The ASME VIII Div 2 Annex 5 Cylindrical Shell Strain-Life Fatigue Life Estimator Calculator estimates Fatigue Life (Cycles) based on the input parameters you provide
Why is total strain range important in this calculation?
total strain range is directly proportional to fatigue life (cycles). When you enter total strain range in dimensionless, the calculator uses it in the engineering formula to compute the output
How should I interpret the result fatigue life (cycles)?
The calculator outputs fatigue life (cycles) in dimensionless. The result is computed directly from the input values using the defined engineering formula
What units should I use for the inputs?
Enter each value in the units shown next to the input field: Total Strain Range (dimensionless), Fatigue Strength Coefficient (dimensionless), Fatigue Strength Exponent (dimensionless). Make sure all inputs use the specified units for consistent results
What assumptions does this calculator use?
This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment
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