Inquiry Regarding Contact Force in LS-DYNA

[Milestone]

Hi Dear all,

I am using *CONTACT_SLIDING_ONLY_PENALTY in LS-DYNA in LS-DYNA.
In my intended application, I output the contact force via setting sapr = 1 and sbpr = 1.

For penalty based contact, the contact force would be affected by the scale factor of stiffness of surface A and B(sfsa and sfsb). However, in my case, the outputed contact force are the same among different sfsa and sfsb while the simulation results are different.

I wonder what would be changed when we change the sfsa or sfsb making the simulation result changing?

Thanks for your insight in advance.

Best,

Chengbin