The conference proceedings for the 1979 World Users' Conference are now available on-line in Adobe Acrobat PDF format. These papers are listed alphabetically. A procedure is presented for substructure modal analysis in which models of the components are initially incompatible. Such incompatibility exists when model generation and component modal reduction are performed by different organizations on different computer systems.
Theoretical development is discussed, along with a brief description of results.
The now rather familiar helicopter model was used to compare the method of static condensation vs. the method of component mode synthesis. Originally the conventional solution, rigid format 3, normal modes was used for the analysis. The model was redefined using the superelement technique, fist as a single level substructing model and then into a multilevel substructuring model. Up to this point the Guyan method of static condensation was used to reduce the model from an original medium size static model to an acceptable size for normal modes analysis. With the development of the generalized dynamic reduction capability, the helicopter was reanalyzed using both superelements, generalized dynamic reduction and component mode synthesis.