Brad,
Use the *ELASTIC command to specify your initial Young's modulus then use the *PLASTIC
command to specify your second modulus (really isotropic hardening defined by a table of
yield stress vs. plastic strain in ABAQUS). In your case there will be only two points
defined in your *PLASTIC command: the initial yield point and a second point (failure
stress, maximum plastic strain) that defines the second slope of your stress-strain curve.
Greg Cruse
Sr. Engineering Analyst
Oil States Industries
----- Original Message -----
From: Brad Probst <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, October 12, 1999 10:17 AM
Subject: Abaqus bilinear material
Would anyone have any information on how to implement a bilinear material
definition in Abaqus?
The only way I am aware of is through the use of a user-defined material
(UMAT). But, I am unsure of how to code the material definition. Could
someone who has coded something similar please offer some assistance? Or,
if there is an alternative method.
The data I am working with is the value of the Young's modulus of
elasticity corresponding to a region of strain and an additional value of
the Young's modulus for the second region of strain through failure/maximum
strain.
Thanks in advance for any feedback
Brad Probst
Dept. of Biomedical Eng.
Tulane University
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