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bilinear constitutive law
- Thread starter linab
- Start date
gurmeet2003
Mechanical
linab,
It is very simple. First thing is to convert from engineering stress and strain to true stress and strain. Following formulas will help:
Stu=Su(1+e)
et=ln(1+e)
I think the symbols are self explanatory. ABAQUS asks for two points to define the bilinear curve. Of course one point (0,0) is already known. Therefore add the following points:
0, Sy
et, Stu.
Gurmeet
It is very simple. First thing is to convert from engineering stress and strain to true stress and strain. Following formulas will help:
Stu=Su(1+e)
et=ln(1+e)
I think the symbols are self explanatory. ABAQUS asks for two points to define the bilinear curve. Of course one point (0,0) is already known. Therefore add the following points:
0, Sy
et, Stu.
Gurmeet
- Thread starter
- #3
gurmeet2003
Mechanical
Pick plasticity. It will allow you to enter true stress and true strain in a tabular fashion.
Gurmeet
Gurmeet
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