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Download package of ISA cyclic hypoplasticity for Abaqus
Description: Download package of ISA cyclic hypoplasticity model. Contains umats and example Abaqus input files. Umats (ISA+sand hypoplasticity) allow to switch between ISA and classical intergranular strain concept.
Authors: Fuentes, W. et al.
In the initial state subroutine of your axisymmetric examples, is there anything wrong with the initial intergranular strains? I think that Statev(4) instead of Statev(5) is the correct one to initialize strain in the y-direction. Could you confirm that?
Hi , professor William Fuentes
I‘d’ like to ask if you have the matlab program of ISA cyclic hypoplasticity model , I would be appreciated if you could send me a copy. Thanks a lot！
Dear prof. Fuentes
Thanks for sharing this code. This code is very valuable for understanding the structure of the theory of intergranular strain hypoplasticity, but unfortunately i ran it many times and it seemed that the code had a problem in the UMATISA subroutine section. I mean at the very beginning of the code. ISELAST was given an initial value of 0 and then told if its initial value is 1 ??
In fact, my question is, what is the ISELAST variable and when will the UMATelast subrotein be called?