Hey,

I am trying to run a springback simulation in Abaqus/Standard after a deep drawing simulation using Abaqus/Explicit. Therefore I copy the model of the deep drawing simulation and apply a predefined field for the blank part. The other parts and boundary conditions were deleted.

Using shell elements of type S4R everythink works. But when I try to use S4 elements instead, I get the following warning and error messages:

The 3-direction at one or more points in one or more layers in 11609 elements as defined in *ORIENTATION are in the opposite direction to the element normals. Either the 1 or 2 and the 3-direction defined in *ORIENTATION will be reversed. The elements have been identified in element set WarnElem3DirOppElemNormalStep1Inc1.

The user defined normal of the material orientation of 3974 elements, as defined in *ORIENTATION, is orthogonal to SHELL or MEMBRANE normal direction. Check input data. The elements have been identified in element set WarnElemUserNormMatOrient.

The user defined normal of the material orientation of 515 elements, as defined in *ORIENTATION, is orthogonal to the GASKET, COHESIVE, SHELL or MEMBRANE normal direction. Check input data. The elements have been identified in element set ErrElemUserNormMatOrient.

Does anybody know what could be the problem in this case or how could I solve the problem?

Thanks in advance!