To properly set up an analysis and use nonlinear adaptivity, review the following requirements. This feature supports:
Static Structural analyses only.[1]
3D and 2D simulations.
Scoping to solid bodies or element-based Named Selections only. Also note that:
All elements must be of the same element type, material, nodal orientation, and element orientation. If two regions with different element or material attributes require re-meshing, use separate Nonlinear Adaptive Region objects.
The mesh for each region must include only high order elements or low order elements. You cannot specify mixed order mesh elements.
[1] For additive manufacturing Inherent Strain simulations, a special case of nonlinear mesh adaptivity is available in which simulation time is reduced by coarsening elements in previously deposited layers, thereby reducing the total number of elements. See Using Adaptive Meshing (AM Octree) for details.