Plastic Strain Data Input
Plastic Strain Data Input
(OP)
Hello All,
I am trying to input the plastic strain data into Abaqus for my aluminium material.
Now I know the Yield Stress is in MPa but what is the Plastic Strain value?
Is it the percentage of elongation?
Thanks for any help
I am trying to input the plastic strain data into Abaqus for my aluminium material.
Now I know the Yield Stress is in MPa but what is the Plastic Strain value?
Is it the percentage of elongation?
Thanks for any help





RE: Plastic Strain Data Input
RE: Plastic Strain Data Input
RE: Plastic Strain Data Input
Thanks for your responses.
The strain values I have are 0.001 in/in elongation.
For example, this is the data I have:
Stress (MPa) / Strain (10^-3 in/in)
0 / 0
12.0 / 0.219
26.0 / 0.417
and so on...
From graph, the yield point is around 380 MPa.
(First three points)
Stress (MPa) / Strain (10^-3 in/in)
380.0 / 5.40
390.0 / 5.61
396.0 / 5.80
My question is what format do I input this as into Abaqus which asks for both Yield Stress (understand this field) and the 'Plastic Strain'?
Is the above (5.40) style correct or do I extrapolate this i.e. 0.00540
RE: Plastic Strain Data Input
elastic strain = stress / youngsmodulus
RE: Plastic Strain Data Input
*ELASTIC, TYPE = ISOTROPIC
(380e+06/5.4e-03), poissons ratio,
*PLASTIC
380.0e+06, 0.0
390.0e+06, (5.61-5.40)e-03
396.0e+06, (5.80-5.40)e-03
etc....
Both stress and strain need to be input in consistent units, so if your value of measured strain is 5.4e-03 at a measured stress of 380MPa, that's how Abaqus wants it.
RE: Plastic Strain Data Input
RE: Plastic Strain Data Input