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Multi-linear isotropic hardening
Posted 17 giu 2013, 16:01 GMT-4 Structural Mechanics Version 4.2a 3 Replies
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I'm working on a thermo-mechanical model (including plasticity) and I am defining a hardening function by an interpolation function because I have the stress-strain curve.
The problem is that I have many stress-strain curves, because this curve is dependent on the temperature (I have all stress-strain curves for various temperatures).
My question is, how I can define multiple curves (stress-strain) in my hardening function? A first solution that I tried, was using a temperature-dependent function that multiply one of stress-strain curve (20 ° C):
hardening * F (T)
but I want to know if it is possible to do adding all the experimental data.
Thanks and best regards!
Alberto T
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I believe you can define an Interpolation Function, set the Data Source field to File and reference a text file with the experimental data formatted according to the COMSOL format required for this feature (and described in the documentation).
Nagi Elabbasi
Veryst Engineering
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done!!
Best regards!
Alberto T
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I have solving a similar problem. When we choose the interpolation function to input the values of yield stress, we also have to define the values for kinematic tangent modulus and isotropic tangent modulus. I know the value of kinematic mod, what value should i use for the isotropic modulus.?