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Dear all,

I am facing issues with element deletion. I am really hoping that some of you can provide help.

I have a working VUMAT for elasto-plastic material. During my simulation, I delete...

hi lumpwood,

thanks for your suggestions. i figured out the error. i had a misplaced 'return' statement in the code. now things look brighter..

brunda

hi lumpwood,

thanks for your suggestions. i figured out the error. i had a misplaced 'return' statement in the code. now things look brighter..

brunda

I am still lost.

I used a simple cuboid formed by merging two cubes of different material properties. This simulation works provided each cube is meshed as a single brick element. However, when I...

Hi,

In my simulation, I use two different sets of material properties and define the constitutive relation using vumat. The material properties and the vumat have been tested individually and they...

Dear Jorgen,

I have a cube with a spherical inclusion at the center. Without the inclusion, I have successfully applied periodic boundary conditions. However, with the inclusion in place, the mesh...

Hello guys,

I have a strange problem at hand.

I have a square plate with periodic boundary conditions.

I have tested the plate in ABAQUS Standard with coarse and fine mesh and it works just...

Thanks for the quick reply.

So a small time step should probably resolve the problem eh?

On a related note, how do we know about the inertial effects? I have seen that in .sta file, the %...

Hello all,

I use ABAQUS Explicit user subroutine VDISP to simulate pin loading in a tensile test (displacement mode) on a single edge notched plate.

When I run the simulation, I have noticed...

Hello all,

I am looking for some information on the strain measures used in ABAQUS subroutines (logarithmic vs green strain etc)

What kind of strain measure is used in UMAT and VUMAT? I vaguely...

Hi,

I am working on plasticity model for which I have written a UMAT. I have
tested UMAT on single 3D C3D8, 2D plane strain CPE4 and 2D plane stress elements. The simulations give expected...

Hello all,

I am currently working on a fracture model using UMAT to define the constitutive model. I have a three dimensional edge crack plate and I am printing J integral values for 10 contours....

Hi Jorgen,

Thanks for your reply.

Inertial effects are present in the experiments. I am not sure on whether they suppress them or not. We are trying to find out if softening, yield etc changes...

Hi,

I am evaluation the effect of strain rates on stress strain behavior of polymers. It is supposed to be a quasi-static analysis.
However,during high loading rates (of the order of e3), the...