Mid Ratio (FEM mode)

Mid ratio is the relationship between the height and length of parabolic elements. A large mid ratio indicates that an element may have too much curvature.

When you check your mesh, Creo Simulate uses the Mid Ratio quality measures to highlight element edges which, if output as parabolic elements, have mid ratios higher than the preset bound. The Mid Ratio quality measure is used primarily by the ANSYS FEA solver. Most other solvers disregard this mid ratio value.

Creo Simulate calculates the mid ratio, M , according to this formula:

M = h/L

where h is the distance between the midnode and the connecting line of the corner nodes, and L is the distance between two adjacent corner nodes. The software performs this test on parabolic mesh only.

Return to Checking a FEM Mesh.