ask for a contact problem in abaqus, the cpress displays negtive value.

[zhanshenjing]

Hi, everyone. I recently used general contact to define the surface contact between two shell component. But the result show both positive and negative cpress value. I checked the allow separation, what else that might be wrong can lead to this result? Thanks

 

[corus]

Probably a mixture of rounding errors and extrapolation of the element stress to the nodal positions due to only one element through the thickness.

 

[zhanshenjing]

Hi，corus is there anyway to display cpress based on element？ It seems that abaqus only allow banded display mode.