Creo Simulate > Running Solvers > FEM Solvers > Element Shape
Element Shape
Use the Element Shape area on the Run FEM Analysis dialog box to determine the type of elements the solver will use. The Element Shape area includes the following:
Linear—Use linear elements for the run or the output deck. Linear elements have only corner nodes, straight edges, and planar faces. These elements are best suited for models with relatively planar and straight-edged topologies, and can improve solution times for these models. Creo Simulate outputs linear elements as follows:
shell elements—Uses 3-node elements for triangular mesh and 4-node elements for quadrilateral mesh.
solid elements—Uses 4-node elements.
Parabolic—Use parabolic elements for the run or the output deck. When Creo Simulate runs with or outputs parabolic elements, it uses the same mesh, but adds mid-edge nodes to each element. These added nodes aid in the approximation of model curvature by enabling the mesh elements to flex at the added nodes. This ability to flex enables the elements to conform to curved model surfaces better. Creo Simulate outputs parabolic elements as follows:
shell elements—Adds a mid-node to each edge, using 6-node elements for triangular mesh and 8-node elements for quadrilateral mesh.
solid elements— Adds mid-nodes to each tetrahedral edge and outputs 10-node elements to the file.
If you select Parabolic, you can use the Fix Elements button to adjust the mesh. This button adjusts mid ratios so that they do not exceed values you specified on the Element Quality Checks dialog box. The Fix Elements button is particularly useful if your model has a moderate to high degree of curvature.