How to update Young modulus according to change in plastic strain in Abaqus GUI
How to update Young modulus according to change in plastic strain in Abaqus GUI
(OP)
Hi Everyone. My materials Young's modulus (E) is changing with the increasing of the plastic strain.
How can I implement this behaviour in abaqus GUI (since I'm not good in scripting)?
How can I implement this behaviour in abaqus GUI (since I'm not good in scripting)?





RE: How to update Young modulus according to change in plastic strain in Abaqus GUI
I see options with a UMAT subroutine or with field variables combined with a UAMP subroutine.
RE: How to update Young modulus according to change in plastic strain in Abaqus GUI
I tried to write a VUSDFLD subroutine (my model is Dynamic Explicit and since I am an absolute beginner I would like to avoid VUMAT).
I found an old thread here (http://www.eng-tips.com/viewthread.cfm?qid=295995) which gave me some clue in what I should write (Although they used USDFLD subroutine).
Here is my VUSDFLD subroutine:
http://files.engineering.com/getfile.aspx?folder=4...
Here are my questions:
1- The young's modulus of my material model in changing with the engineering strain (which contain both elastic and plastic strain) (I made a mistake when writing the topic of this thread). Does my subroutine cover both parts? and did I use right codes for it?
2- Should I just add the Data written below in the Elastic section of material property module (since it also contain the plastic strain)? and if I do so, would abacus recognize when the strain reached the plastic zone?
E ------ Engineering Strain
203050 0
186750 0.01
174750 0.02
168450 0.03
163900 0.04
159800 0.05
156100 0.06
152850 0.07
148950 0.08