how kan i use the stiffness matrix for a new material

- May 4, 2021 at 3:55 pm
  
  jan
  Subscriber
  
  i vant to use stiffness matrixs for a orthotropic material
  want to use this matrix
- May 27, 2021 at 2:25 pm
  
  mrife
  Ansys Employee
  
  Hi @jan It is not exactly clear what you want to do here. Nor in which FEA application you want to do this in i.e. Mechanical APDL, Ansys LS-Dyna, Autodyn, etc. Could you please be more specific. If you are using MAPDL, or WB Mechanical model that uses MAPDL as the solver, then see the following Help section on the element Matrix27. This allows us to define a 2 node element, each node has translation and rotational degrees of freedom, by directly defining the stiffness terms.
  Ansys Help -> Mechanical APDL -> Element Reference -> Element Library -> Matrix27
  Mike