This chapter contains specific modeling guidelines for multistage cyclic symmetry analyses.
Applicability
Multistage cyclic symmetry can be used to model one or more cyclic stages in combination. You can combine up to 100 stages with each stage having up to 360 sectors. Note that in a multiharmonic multistage analysis the total number of stages is equal to the number of lead harmonic stages plus the number of stage clones.
- One Cyclic Stage
You can model a single stage using the multistage procedure described here. Results of a multistage analysis having only one stage are equivalent to those obtained in a cyclic symmetry analysis (a different procedure that uses the CYCLIC command that is detailed in the Cyclic Symmetry Overview in the Cyclic Symmetry Analysis Guide).
- Multiple Cyclic Stages
Multiple cyclic stages with compatible interstage boundaries can be combined.
Solid and shell elements with the following degrees of freedom are supported:
elements with UX, UY, UZ degrees of freedom, or
elements with UX, UY, UZ, ROTX, ROTY, ROTZ degrees of freedom, or
elements with TEMP degrees of freedom.
Models are not permitted to have more than one of the above types of elements defined or present in the model during the solve. For example, a model with elements SOLID186 (UX, UY, UZ DOFs) and SOLID279 (TEMP DOF) is not allowed.