I'm trying to solve a large deformation problem interactively using updated
lagrangian formulation. I have some trouble in updating the mesh. In the
code I attached here, I attempted to define new_ulf_iteration in
problem.nls_iter_hook (line 149) and nls.iter_hook (line 152). But both
methods failed to update the msh. How do you update mesh in
interactive mode? Thanks!
My question is about order of approximation in field as well as integral. My understanding is that the order of field is the order of the polynomial shape functions in element and order of integral is for the integration in qp. For a 3 point triangular element as well as 4 point quadrilateral element, I think order of field should be 1 and using any other value is "wrong". Is this correct ? Also, I noticed from user manual that the order of integral = 2* order of field. I was curious what is the basis for this assumption ?
With the same element size, Poisson's ratio and elastic modulus, why is the arrangement order of the element stiffness matrix obtained in ANSYS different from that in sfepy? Can you tell me which finite element book you are referring to? Secondly, I want to set different materials for different finite element elements. What functions do I need to call?