Strain-rate-dependent E.

[GustavSad]

Hi, I'm modeling a polymer impact-test in abaqus using *Elastic and *Plastic commands, I have stress-strain curves at different strain rates.

I can input stress-strain data on *Plastic using "Use strain-rate-dependent data" option.

How can I input strain-rate dependent Young's Modulus on *Elastic??

Thank you.


Gustavsad.

[Jorgen]

I don't believe you can...

-Jorgen

[Frank]

Yes, this is possible.
Read the user subroutine manual, chapter on USDFLD. You can proceed in the same way and make the modulus depend on ER, the mechanical strain rate components.

[Jorgen]

Frank is right - It can be done. Although I don't think it is good general approach in material modeling.

-Jorgen