CAJ | 학술논문

大型组合结构动特性计算往往采用子结构模态综合技术。子结构模态综合技术是将大型结构划分多个部件，将部件按照模态坐标展开为广义模型，再将广义模型进行综合，获得整体结构动特性。本文给出一种将部件的广义模型和物理模型直接综合的方法-广义模型物理化方法，并提供了方法在Nastran 软件的实现途径。该方法不同于传统的子结构综合方法，能够将广义模型直接按照物理模型看待，从而将广义模型直接和物理模型进行综合，避免了繁琐的模态综合过程，使得对广义模型的理解和使用更加直观。文章最后给出了广义模型物理化方法的验证算例以及工程应用实例。
대형조합결구동특성계산왕왕채용자결구모태종합기술。자결구모태종합기술시장대형결구화분다개부건，장부건안조모태좌표전개위엄의모형，재장엄의모형진행종합，획득정체결구동특성。본문급출일충장부건적엄의모형화물리모형직접종합적방법-엄의모형물이화방법，병제공료방법재Nastran 연건적실현도경。해방법불동우전통적자결구종합방법，능구장엄의모형직접안조물리모형간대，종이장엄의모형직접화물리모형진행종합，피면료번쇄적모태종합과정，사득대엄의모형적리해화사용경가직관。문장최후급출료엄의모형물이화방법적험증산례이급공정응용실례。
The substructural modal synthesis techniques are frequently used to solve the dynamic characteristics of the large complex structure. In the substructural modal synthesis techniques, the large structure is divided to several substructures, the physical models in terms of the physical coordinate are converted to generalized ones in terms of the modal coordinate, and the generalized models are synthesized to result in the dynamic characteristics of the global structure. In this paper, the method called as the method of ungeneralizing the generalized models, by which, the dynamic characteristics of the global structure is resulted from the synthesis of the physical model and the generalized ones is proposed. In contrary to the traditional modal synthesis, by this method the generalized models can be considered as the physical models, so that the generalized models can be synthesized directly with the physical models, the complex modal synthesis process is avoided, and the generalized models are easily understand. At last, a validation example and an application example of the method of the un-generalizing the generalized models is illustrated in this paper.