Hi
What is the difference between contact.normal and specialfc.normal? Why contact.normal is used for 2d but special.normal(3) is used for 3d in the tutorial of the contract problem?
Bests
Hi, can be used quite exchangably. One difference is that contact.normal always points outward of material if other side is exterior. specialcf.normal(3) has orientation with respect to face orientation of geometry face in OCC
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