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Ramberg-Osgood Stress-Strain curve
This page generates a stress-strain curve according to the Ramberg-Osgood method, ref 1.
ε = σ / E + 0.002 * (σ / t
2)
m [ref. 3 equation 9.8.4.1.2(b)]
Material Properties
To update the curve, click here
NB. The output is stopped when either the stress exceeds f
tu or the strain exceeds 20%.
Tabulated Results
| Stress | Strain |
|---|
| 0 | 0.000000 |
| 29,442 | 0.002858 |
| 32,713 | 0.003176 |
| 35,984 | 0.003494 |
| 39,255 | 0.003811 |
| 42,527 | 0.004129 |
| 45,798 | 0.004449 |
| 49,069 | 0.004779 |
| 52,340 | 0.005166 |
| 55,612 | 0.005829 |
| 58,883 | 0.007717 |
| 60,674 | 0.010369 |
| 62,465 | 0.015858 |
| 64,255 | 0.027190 |
| 66,046 | 0.050306 |
| 67,837 | 0.096742 |
| 69,628 | 0.188495 |
References
- NACA Technical Note No. 902 "Description of Stress-Strain Curves by Three Parameters" by Walter Ramberg and William R. Osgood.
- NACA Technical Note No. 927 "Determination of Stress-Strain Values from 'Offset'
Yield Strength Values" by H. N. Hill.
- MMPDS-01 §9.8.4.1.2