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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 / t2)m      [ref. 3 equation 9.8.4.1.2(b)]

Material Properties

Young's modulus :E = psi  
0.2% yield stresst2 = psi  
Curvature parameter :m = -  
Ultimate stressftu =  psi  
Max strainεmax =  -  

To update the curve, click here   

NB. The output is stopped when either the stress exceeds ftu or the strain exceeds 20%.
 

Tabulated Results

StressStrain
00.000000
29,4420.002858
32,7130.003176
35,9840.003494
39,2550.003811
42,5270.004129
45,7980.004449
49,0690.004779
52,3400.005166
55,6120.005829
58,8830.007717
60,6740.010369
62,4650.015858
64,2550.027190
66,0460.050306
67,8370.096742
69,6280.188495

References

  1. NACA Technical Note No. 902 "Description of Stress-Strain Curves by Three Parameters" by Walter Ramberg and William R. Osgood.
  2. NACA Technical Note No. 927 "Determination of Stress-Strain Values from 'Offset' Yield Strength Values" by H. N. Hill.
  3. MMPDS-01 ยง9.8.4.1.2