[sultzan]

Hello,

I'm performing static structural analysis for pressure vessel modeled as surface body. Im using 1/8 (quarter of half) of the model applying symmetry conditions. Problem seems trivial, however I'm having hard times creating desired mesh. Since mentioned analysis is axisymmetric, I want mesh to maintain symmetry to the axis. The most adequate mesh would be the one with the triangular elements at the apex intersecting the axis of rotation and quadrilateral elements for the rest of the body (called often "wedge" mesh). According to this source: https://www.sharcnet.ca/Software/Ans..._Map_Face.html wedge mesh can be achieved in Ansys (at least for the face of the 3d body). Despite that I couldnt achieve that on my model. The walk-around method is to cut the small hole at the apex intersecting the axis of rotation and then using mapped mesh to create regular, axisymmetric quadrilateral mesh. However such approach leads to stress concetration in the cut area. Attached picture shows mentioned method. Any idea on how to solve this problem?