Ansys ACP(Pre): Apply one “oriented selection set” to two surfaces, with opposite normals?

- November 19, 2020 at 3:06 am
  
  hunteros95
  Subscriber
  
  Hello,
  I am new to Ansys ACP and am trying to set the element normals of a box spar using an oriented selection set. I'd like the normal direction of the top surface to point in the positive z of the rosette, and the bottom surface to point in the negative z of the rosette (so the part is being built up inward).
  I'd like to do it in one oriented selection set, but when I do that both surface normals point in the positive z of the rosette. Is it possible to do it in one, or will I have to create an oriented selection set for the top surface and another for the bottom?
  Thank you
- December 2, 2020 at 3:33 pm
  
  Govindan Nagappan
  Ansys Employee
  
  If you have mesh connected between all the faces, you can use a single oriented selection set for all faces. In which case, you can have the thickness direction inward or outward for all 4 facesnIf you have to define OSS for the two faces in your image and need the inward direction, you will need two separate OSS. It is not possible to use single OSS to achieve this n

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