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Material Definition with different strain rates and temperatures

Material Definition with different strain rates and temperatures

Material Definition with different strain rates and temperatures

(OP)
Hi friends.

I'm using Abaqus CAE 6.7EF to simulate deep drawing process. The material is Al-Mg alloy. I performed experiments with different strain rates such as 0.1, 0.01, 0.001, 0.0001/s at different temperatures: 20, 200, 250, 300 degree.
I read in documentation (17.1.2 Material data definition) but I can not understand how define this kind of material.
Please tell me, any suggestions is good for me.
Regards
Tung  

RE: Material Definition with different strain rates and temperatures

The easiest (though not best) way is to simply enter your data tabularly. For each of your rates and temperatures, you can input a table of <stress>,<plastic strain>,<temperature>. In CAE, you can enter all the data in one table and it will sort it out automatically. You will probably have to enter data for a rate of 0, which you could just duplicate your slowest rate data.

Example Input File:

*Material, name=Material-1
*Elastic
1., 0.3
*Plastic, rate=0.
 0.5,0.,1.
 0.4,0.,3.
*Plastic, rate=1.
1.,0.,1.
0.5,0.,3.
*Plastic, rate=10.
2.,0.,1.
1.5,0.,3.
 

RE: Material Definition with different strain rates and temperatures

(OP)
Thanks VUMAT721

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