Hi, Everyone,
I attempted to simulate the deformaiton of a plate containing sub-plates:sub-plate1 and 2, correspondingly, the sub-plate is material 1 and the sub-plate 2 is the material 2 (like the composite) using abaqus. I try to define those two material using the subroutine VUMAT. As I know, a single CAE file only can be combined with a single subroutine VUMAT. So I try to use only one VUMAT to define these two different materials: firstly the material point is searched that where (material 1 or material 2) the material belongs to, and then according to the position of the material point, different material constitutives are defined, respectively.
correspondingly in the CAE file two different material properties were defined and assigned to the different sub-plates, and at the same time for each definition of material properties, 'user material' was chosen. Is it right?
maybe only one material property need to be defined in CAE file?
your help will be highly aprreicated.
Thank you very much.
Hongsheng
Dear Hale: Since you
Dear Hale:
Since you have two different materials (sub-plate1 and sub-plate2), you should have two sets of material properties. I assume that the constutitive behavior is same for both the materials. And the difference in behavior is due to different properties.
I have a similar problem of a sphere in a cube with different material properties but follow the same constitutive relation. I used vumat to describe the relation. But my simulation gives "Bad Material definition" error and I have not yet found a solution for the issue. The material properties and the vumat are well tested and I believe they are correct.
If you have any inputs do post them.
B