Non homogenous strain in uniaxial Testcase in ABAQUS
Hello Everyone,
I am trying to verify my implementation of a viscoelastic Materialmodel in ABAQUS via modeling an uniaxial loading/unloading test.
The specimen is a 100x10x1 mm thick solid material (3D Model).
The Top surface is fixed and the load is applied as a displacement boundary condition on the bottom surface.
When I do the caluclations with a purely hyperelastic material, the strain is homogenous in the middle of the specimen, as expected. However, after I add the PRF Model with two nonlinear viscoelastic Elements using the BB-Model, the strains become inhomogenous. The model becomes kinda spotty, meaning there are periodic regions with higher strains (as can be seen in the Figure). This happens after an elongation of about 50%.
I tried playing around with stabilization in the step-controlls, but unfortunatly that did not really help.
I am greatful for any advice.
Thanks in advance
Martin
- Wave properties in dynamic structural analysis2 months ago
- Abaqus error running VUMAT - ...package.exe aborted with system error code 10737415113 months ago
- Stress Strain Values Of PEEK5 months ago
- Abaqus - Problem with multiple nonlinear Springs9 months ago
- Nanoindentation Simulation - Prescribe Indentation Load Instead of Indentation Depth?10 months ago
Latest Post: BB Model for OptiStruct Nonlinear Static Our newest member: NursingAssignmentsHelp Recent Posts Unread Posts Tags
Forum Icons: Forum contains no unread posts Forum contains unread posts
Topic Icons: Not Replied Replied Active Hot Sticky Unapproved Solved Private Closed