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The 2D isoparametric Jacobian: J = [dx/dxi dy/dxi; dx/deta dy/deta]
(row a is the derivative with respect to natural coordinate a), its
determinant and inverse, and physical shape-function derivatives.
Structs§
- Jacobian
J,det JandJ^{-1}at one point.
Functions§
- physical_
derivatives dN_i/dx_c = sum_a J^{-1}[c][a] dN_i/dxi_a, one[dN/dx, dN/dy]per node.