3D Design

3D Design

2D Solid Body vs. 3D Surface Body

    • matahari
      Subscriber

      Hello everyone,


      when is it beneficial to model a problem as a 2D solid instead of 3D surface body? As far as I understand 2D solid has limitation in that it can't have out-of-plane bending, whereas surface body can deal with warpage. I simulated a plane stress problem both as a 2D solid and surface body, and the mesh quality was virtually identical, but surface body had almost 3 times less nodes than 2D solid. What advantage of 2D solid am I missing?

    • peteroznewman
      Subscriber

      Each node on a 3D surface body has 6 degrees of freedom (DOF).


      Each node on a 2D plane strain model has 2 DOF.


      Therefore a 3D surface of the same mesh would have 3 times more equations to solve.


      That is one advantage to a 2D model.

    • matahari
      Subscriber

      Thank you!

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