adding youngs modulus as a function of stress

Numerical methods and mathematical models of Elmer
kevinarden
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Re: adding youngs modulus as a function of stress

Post by kevinarden » 13 Feb 2019, 13:21

Thanks mika,

I assumed the output variables that I post process was the same as the calculation variables. I will try "Principal Strain 1", since my tensile test is in the x-direction.

kevinarden
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Re: adding youngs modulus as a function of stress

Post by kevinarden » 13 Feb 2019, 21:53

The fallacy of this approach is that it changes Young's Modulus for the whole model. Where in a general material plasticity case, only the elements being stressed over yield start seeing plasticity. I was able to get good results with this approach by making a uni-axial model where all of the elements have the same stress over all time steps.

kevinarden
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Re: adding youngs modulus as a function of stress

Post by kevinarden » 10 May 2019, 13:37

tensiletest.zip
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Files for the above post

annier
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Re: adding youngs modulus as a function of stress

Post by annier » 24 May 2019, 01:44

Dear Kevin,
Thanks for your wonderful examples of testing youngs modulus as a function of variables.

Yours Sincerely,
Anil Kunwar
Anil Kunwar
Department of Materials Engineering, KU Leuven, Belgium

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