Shi Wenzheng

4 Questions 6 Answers 0 Followers

Questions related from Shi Wenzheng

In ABAQUS Umat, why the "write' sentence will affect the calculation?

The result became different when a "write" sentence was added to the code. e.g., WRITE(6,*),"NNNNN",N If I delete this sentence or delete the variable N, the result will change. Why this happening?

09 September 2016 2,686 0 View

How to simulate shear band in soil specimen by using a hardening-softening model in FEM? Do we need any special technique?

Hi everyone, I am trying to model the formation of shear band in sand specimen in ABAQUS/Standard. I used a user defined work hardening-softening model for sand. But the global equilibrium cannot...

05 May 2016 5,103 6 View

In geotechnical engineering, how can I integrate a highly non-linear elasto-plastic constitutive model within the FEM scheme?

What algorithms could be the most possible approach for both the local integration of the constitutive model and the global iteration in the boundary value problem (say a footing case)? Here I...

08 August 2015 9,134 3 View

Can anyone help me on the implementation of a complex Mohr-Coulomb model for sand in ABAQUS UMAT subroutine?

This is a very complex constitutive model. The yield function is assumed to be Mohr-Coulomb type with zero cohesion. The friction angle will increase or decrease (after peak) with the development...

07 July 2015 4,558 3 View