Following are the supported analysis types, elements, materials, loads, boundary conditions, and other NLAD-GPAD requirements:
Support Category | Support Details | ||||||||||||||
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Solid elements | |||||||||||||||
Contact elements |
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Contact pair behavior |
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Surface-effect elements | |||||||||||||||
Materials | |||||||||||||||
Analysis types | |||||||||||||||
Loads and boundary conditions (BCs)[g] | |||||||||||||||
Region to be remeshed[i] |
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[a] General remeshing only.
[b] NLADAPTIVE does not support elements with dropped mid-side nodes in element.
[c] General contact is not supported.
[d] For flexible-to-flexible contact pairs, any large initial penetration approaching or exceeding a single-element depth may cause remeshing to fail. In such cases, Ansys, Inc. recommends assigning different material and/or element types to the contacting bodies.
[f] For linear analyses with linear elastic materials
and small-deflection effects
(NLGEOM,OFF), the iterative
Newton-Raphson solution procedure is set
automatically. The smallest possible number of
substeps must also be set (either directly via
NSUBST or indirectly via
DELTIM) to a value that ensures
remeshing. Guidance for setting the number of
substeps can be taken from the
NLADAPTIVE,,ON,VAL1
value specifying the remeshing frequency.
[g] Do not remove nodal constraints (DDELE, FDELE, BFDELE, SFDELE) during solution before remeshing.
[i] Initial state, element birth and death, and cyclic symmetry analysis are not supported.
[j] For initially coarse meshes on curved surfaces, the Euler rotation angles of the nodes may be improperly interpolated onto the newly meshed region of the same curved surfaces. If applied nodal boundary conditions (such as displacement) exist on those nodes, they are mapped incorrectly, as the boundary conditions are specified on the local nodal coordinate system (defined by the Euler angles). Curved surfaces should therefore have a reasonably fine mesh. Adjacent nodes on a boundary cannot have different nodal coordinate systems, if this boundary is selected for remeshing.