Hi,
I am doing ratcheting analysis for dynamic loading. Until now I have used only the kinematic hardening model but for more realistic analysis I need to use realistic material modeling. So my question is how can I input realistic material modeling in my numerical analysis by Abaqus. Also, from where I can get the material parameters that are necessary for those material modeling.
Thanks in advance.
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Md Abdullah Al Bari , have you read this
https://classes.engineering.wustl.edu/2009/spring/mase5513/abaqus/docs/v6.6/books/usb/default.htm?startat=pt05ch18s02abm16.html#usb-mat-chardening
Abaqus includes nonlinear kinematic/isotropic hardening models.
For more sophisticated models including for example memory effects and temperature-dependent creep for backstresses you would need to code your own UMAT or use a material library like http://www.zset-software.com/products/z-mat/
examples on how to code such an UMAT you can find in Introduction to Computational Plasticity by Petrinic and Dunne
https://global.oup.com/academic/product/introduction-to-computational-plasticity-9780198568261?cc=at&lang=en&#
As for estimating parameters: you either get them from literature, or by means of inverse modelling from experimental stress-strain curves (both cyclic and static). Experimental stress-strain curves (cyclic and static) you get either by performing your own LCF experiments or from literature.
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