Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations waross on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!

3D composite coupon convergence issue

IcarusAero223

Aerospace
Mar 10, 2024
2
I'm doing an Abaqus/Standard model verification for a 3D composite coupon using C3D8R elements and LaRC05 failure criteria (Load-displacement curve).
Interlaminar properties are defined using cohesive interaction property and General contact interaction type.
When running my simulation the convergence seems to be very slow with an average simulation time being around 7-8 hours for 60ish increments.
Checking .msg file I get: "Displacement correction too large compared to displacement increment." and I'm not sure what this error is referring to.
Is there any way I could get my job to converge faster? I tried many things from adjusting load rate to fiddling with boundary conditions and nothing seemed to do the trick.
 
Last edited:
Back
Top