Problem in Tensile Testing of Nanocomposite

Dear All,

I have designed a nanocomposite having one silicene layer reinforced between two graphene layers. I wnat to perform the tensile test of this composite. The load value in the log file during tensile testing is starting from much higher value (in the range of 189) instead of from zero or a very low value as expected in a tensile test. Also the stress value is fluctuating between positive and negative values. The cfg file also shows that the layers are getting distorted during the test.

Please find the program attached for convenience.

Please let me know your suggestions.

in.GS_deform.txt (1.87 KB)