How to implement a elasto-plastic model with linear hardening characteristics

Hi Jiadun,

by "linear hardening relation", do you mean strain dependent hardening or strain rate (velocity) hardening?

If you want velocity hardening then the "LinearDashpot" interaction gives you a rough approximation of Bingham plasticity.
However, if you need strain hardening thing are going to be difficult:
- there is no such interaction implemented at the moment
- implementing something like strain (displacement) hardening friction would actually be hard because you have to deal with issues like contact life times being limited to rather small particle displacements

Steffen

Hi steffen,

Thank you very much for your reply.

The "linear hardening relation " refers to the strain dependent hardening, as I'd like to implement a linear hardening model as in Table 1 in paper (DOI: 10.1002/nme.2875).

By the way, where could I download the course notes in http://www.ged.rwth-aachen.de/Ww/news/files/DEM_Kurs_Poster.pdf?

Regards,
Jiadun

Thanks Dion Weatherley, that solved my question.