Large displacements (NLGEOM) for specific elements

- July 3, 2024 at 3:27 am
  
  rsadiwa
  Subscriber
  
  I'm performing a static 2-body 2D simulation. The mesh is regular and continuous (across bodies) and elements are merely divided into two bodies for different materials. I want one of those materials/bodies to be geometrically linear, while the other geometrically non-linear. The reason is that one of the materials has very low stiffness (7OoM lower than the other), and it exists only because I need those nodes for boundary conditions. The issue is with NLGEOM on for the entire model, the model doesn't converge due to last distortions in some elements. I want to either have NLGEOM on for specific nodes or ignore the large distortion check. Is either of those possible?
- July 5, 2024 at 3:52 pm
  
  danielshaw
  Ansys Employee
  
  No. NLGEOM is a global solver setting. You cannot specify it for a subset of elements. You could try converting the linear portion of your model into a substructure.