3.4.4 *SUBSTRUCTURE LOAD CASE with centrifugal loads

Product: ABAQUS/Standard  

Element tested

CPE8R   

Feature tested

The ability to define a *SUBSTRUCTURE LOAD CASE with centrifugal loads and apply it on the usage level is tested.

Problem description

A substructure is defined from a CPE8R element, and a load vector representing centrifugal loading is defined via *SUBSTRUCTURE LOAD CASE using the CENT/CENTRIF option on the *DLOAD option. Four such substructures are then used to model one-quarter of a rotating annular disk in the plane.

Results and discussion

The results are identical to those from an analysis without substructures. The displacement of the inner and outer radius at all points on the quarter annulus is 0.1833 and 0.2388, respectively. Both displacements are within 2% of the analytical results.

Input files

psupsld1.inp

Uses CPE8R elements with CENT loading.

psupsld1_gen.inp

Substructure generation file referenced in the analysis psupsld1.inp.

psupsld2.inp

Uses CPE8R elements with CENTRIF loading.

psupsld2_gen.inp

Substructure generation file referenced in the analysis psupsld2.inp.