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Polynomial Boundary
The Polynomial Boundary feature () can be added from the model tree under Component>Definitions using the Shape Optimization context menu. It is only available for 2D components and the selection has to be adjacent to a Free Shape Domain. It includes the following settings:
Control Variable Settings
Enter a value in for the Maximum displacement dmax (default: default: 5 % of the geometry bounding box).
A large value can give rise to error messages such as that in Figure 3-1.
Polynomial
Choose the type of polynomial from the Type list: Bernstein (the default) or Lagrange. Then enter an Order n for the polynomial (default: 2).
Bernstein polynomials satisfy the maximum displacement bound everywhere, while Lagrange polynomials only satisfy it in the interpolation points and therefore Bernstein polynomials can be more robust.
Large orders can give rise to error messages such as that in Figure 3-1.