UINTER subroutine

[abaquslearner]

Hi every one,
I am trying to model the adhesion force between sphere coming into contact with fixed flat surface. I am getting an error message “Too many attempts made for this increment” at the first step. I couldn’t solve this problem and get it run , any one can help with this error message?

An alternative subroutine I can use is UINTER , is anyone know how we implement it to the Abaqus/CAE ?

Thanks for your Help

[cochiece]

As far as I know it's not supported in CAE, you have to implement it through the input file using

*SURFACE INTERACTION, USER, PROPERTIES=number_of_material_constants

I take it from the error you're getting (“Too many attempts made for this increment”) that you're using ABAQUS/Standard? Explicit might work better in this case if you're simulating a dynamic process...