I want to visualize my inp. file via “Run CGX Preprocessor mode”. However, there were errors like following:
ERROR in seta: A negative entity-index:-1 was used in set C_Disc_Rim_03_M
There are two parts in my inp. file, one is solid section for C3D10 elements and one is membrane section for M3D4 for the solid surface. Some selected element surfaces of solid elements are included as well in the inp. file.
When only the solid elements, solid section and selected element surfaces are imported, no such error occurs. When only the membrane section and elements are imported, no such error occurs also.
However, when they are imported together, errors like shown occur.
Does anyone know the possible reasons and ways to fix this? Thanks a lot! inp. file is attached: