ABAQUS Convergence

[han_cyuan]

I use ROUGH in the interaction and it cannot converge. How do I need to modify the settings?

 

[FEA way]

Does it converge without rough contact ? Or with tie constraints instead of contact ? Did you try enabling automatic stabilization ? What is the behavior in the normal direction ?

 

[han_cyuan]

Currently, a quarter of the simulated test vehicle is being built and will move on the bridge. The interaction is to set hard contact and rough. Will using the automatic stabilization function make my convergence better?
Want to enable axle coupling through rough surfaces

 

[FEA way]

Automatic stabilization is meant to aid convergence. It can be defined in step settings or specifically for contact. Which type of analysis step are you using ?

 

[han_cyuan]

standard:gravity
dynamic implicit:Solver for car motion

 

[FEA way]

Which application type (quasi-static, moderate dissipation or transient fidelity) ?

 

[oldNail]

Use Tools->Job Diagnostics or msgfile.info to find what node and issue is preventing convergence. After you understand the problem then you can fix it. If you have no idea what is wrong then you (and we) are only guessing.