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  3. Why have I “hot spots” results for B or H field with solid 236 elements, and not with solid117 ?

Why have I “hot spots” results for B or H field with solid 236 elements, and not with solid117 ?

Tagged: 17.2, General, low-frequency, mechanical-apdl, Multiphysics and EMAG (APDL), structural-mechanics
    • June 5, 2023 at 7:04 am
      FAQFAQ
      Participant

      This happens with the solid236 element when it deviates significantly from a straight brick shape and its cross-section is in the form of a rhombus. The B-field singularities (or “hot spots”) happen because SOLID236 uses true brick shape functions to approximate the edge-flux DoFs. The tetrahedron-shaped SOLID236 or SOLID237 elements do not have this issue. In comparison, we don’t see this problem with SOLID117 because, even if it’s a brick externally, internally it is subdivided into tetrahedras.

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