考虑连接动态特性的子结构综合方法

Substructure synthesis method considering dynamic behavior of joints

在Jetmundsen基于频响函数的子结构综合方法的基础上,引入子结构间的相关项(各子结构间已连接的自由度)和连接部件的动态特性,提出了考虑连接部件动态特性的子结构综合方法.应用该方法对3个子结构进行了子结构综合分析实验,并给出其在结构优化设计中的一个应用.实验结果表明该方法正确有效.该子结构综合方法是Jetmundsen方法的改进,使子结构连接不再局限于刚性连接,并具有易于实现结构优化设计等优点.

On the basis of Jetmundsen＇s frequency-response-function-based substructuring method, a new substructure synthesis method which takes into account the effect of joints was presented by introducing structural correlative items （namely originally connected freedoms between substructures） and considering the dynamic behavior of joints. A substructure synthesis experiment incorporating three substructures indicates that the proposed method is an efficient and versatile tool in coupled structure analysis. An engineering application on structural optimization design was introduced concisely. In general, the proposed method is an improved Jetmundsen＇s method. Some significant advantages compared to the conventional Jetmundsen＇s method make its usage not limited in rigid connection and can be easily used in optimization design.