Hi, I consider elastic problem and forces and displacements on boundaries are changing with time. I don't want to compute FEM matrix on each step. How to correctly simulate the task? I know that there is a simple solution, but my solution is incorrect :) I have two variables for the system_matrix and rhs_vector. I try to recompute rhs_vector on each step and dirichlet condition is accounted by calling "intepolate_boundary values + apply_boundary_values" on each step with system_matrix and rhs_vector variables inside. I think that I should use initial matrix and the matrix which is modified by Dirichlet procedure and assign latter to the initial matrix on each step? Am I corrent or there is some other solution?
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