Fea, Mechanical Engineering, Mechanics, Simulation.
thin structures) Boundary Nonlinearity: Due to non-linearity of boundary conditions, (i.e., contact problems) In linear problems, the PDE’s reduce to a matrix equation as: [K]{x} = {f} and for non-linear static problems as: [K(x)]{x} = {f} For dynamic problems, the matrix equations come down to: