P2-30 A Novel Semi-analytical Model of the Stator of the Traveling Wave Type Rotary Ultrasonic Motor Based on Dynamic Substructure Method(Short oral presentation for posters)

概要

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In this article a new modeling strategy for the composite stator of traveling wave type rotary ultrasonic motor has been developed. First the composite stator is divided into several three substructure. Then a kind of semi-analytical annular element is applied to mesh inner web and outer annular composite plates. And each tooth on top of stator is described by hexahedron isoparametric element with 8 nodes and its dynamical contribution on the substrate is calculated based on both substructure interface loading theory and Guyan Method. In this way we can reduce the unknown degrees of the freedom from teeth and the higher computational efficiency and more accurate result will be achieved. At last the substructural modal synthesis theory is applied to derive the whole stator by integrating the substructures. In the end by the computational and experiment examples it is proved that the model by the paper allows for quick and precise dynamical analysis and optimization of composite stator.
2005-11-16