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Material Subroutine in LS DYNA

Submitted by bhargavasista on
research

Hi all,

 I have developed a viso-hyperelastic material model, and now I am trying to implement it in LS DYNA for which I need to write a sub routine. Since I am developing a subroutine for the first time, I am finding it a bit challenging. I have enough documentation for doing this in ABAQUS but not for LS DYNA. I wanted to know what is the major difference between subroutines written for ABAQUS and LS DYNA? Or is there too much of difference to be even compared? It would be of great help for me if you could answer this question for me. Thank you very much

-Bhargava Sista 

rasool_rahmanian

hi,

I wrote a subroutine for modeling shape-memory alloys in ls-dyna. yes, it's a little bit challanging. I used LS-DYNA users manual, V1 appendix A, as well as the following source :

https://sites.google.com/site/aenader/umat-workshop

 now I am done with coding, and also I made the mpp file correctly, but when I run my model the input strains are all zero, thats strange, does anyone have any idea why that happens?

 

Thanks

Rasool 

Fri, 10/11/2013 - 23:55 Permalink