Hello Zhao,
If your research institution has commercial Ansys licenses, you can file a support case.
You can reduce sliding energy by trying the methods I explained before (SOFT=2, SBOPT=3, DEPTH=35), reduce TSSFAC, and reduce BSORT.
You will find more information on contact energy here:
Contact Energy — Welcome to the LS-DYNA support site
And more information about contacts in general here:
Intro-to-Contacts.pdf (oasys-software.com)
I like the above seminar from our channel partner Arup.
If you increase the d3plot output frequency, you might be able to see the contact problem. I suspect node penetrations that is not detected leading the larger forces on the blank.
Let me know how it goes.
Reno.
You are navigating away from the AIS Discovery experience