problem when convert Radioss to optistruct about material

Hello,

I have a problem after I convert Radioss to optistruct.

like PIC 1 but after I change face material it will be like PIC 2.

** The work I need to do is the Perimeter Shear Test, and the result I want is a graph that compares the force and Displeacment like PIC3.

With Kind Regards,

Khantaphat Rohitastira

PIC 1

PIC 2

PIC 3