Hi
Thanks for your reply. My confusion was because after using the subroutine, the stresses are computed correctly at the integration points but the strains are not. I thought that in FEM the order of solution is (i) nodal disp> strains> stresses. So, I was wondering how the stresses are correct...
Hi,
I urgently need some with my subroutine in USDFLD. I am modelling a stiffness dependency on mean stress (E= f(s11+s22+s33)). I enter in a table the values of Young's modulus and the related field variable (pressure).
I have tried many things but somehow the subroutine gives incorrect...
Hi,
I am using USDFLD and a solution dependent field variable to specify the variation of elastic modulus (fieldv=pressure=s11+s22+s33 in my case). Then how is the element stiffness matrix computed at beginning of each load increment? The material properties are a function of the field...
