The formula to calculate the Mean Stress of a Stress Cycle (Fatigue) is:
\[ \text{Mean Stress} = \frac{\text{Maximum Tensile Stress} + \text{Minimum Compressive Stress}}{2} \]
Mean Stress of a Stress Cycle is defined as the amount of mean stress acting when a material or component is subjected to fluctuating stress. Maximum Tensile Stress is the maximum amount of force per unit area acting onto the specimen so that it is prone to getting stretched. Minimum Compressive Stress is the minimum compressive stress in a cyclic load during fatigue.
Let's assume the following values:
Using the formula:
\[ \text{Mean Stress} = \frac{50000000 + 40000000}{2} \approx 45000000 \, \text{Pa} \]
The Mean Stress of the Stress Cycle is approximately 45000000 Pa.
| Maximum Tensile Stress (Pa) | Minimum Compressive Stress (Pa) | Mean Stress (Pa) |
|---|---|---|
| 40000000 | 40000000 | 40,000,000.000000000000000 |
| 45000000 | 40000000 | 42,500,000.000000000000000 |
| 50000000 | 40000000 | 45,000,000.000000000000000 |
| 55000000 | 40000000 | 47,500,000.000000000000000 |
| 60000000 | 40000000 | 50,000,000.000000000000000 |