摘要
在各子结构的振动固有特性（固有频率、振型）已知下，通过设计子结构间的连接元件，使得组合结构的多阶固有频率得到满足。在组合结构动力重分析中，以各子结构的剩余附着模态作为其保留模态的补充，进行模态缩减，保证了计算的精度，提高了计算速度。对具有刚体模态的子结构采取了移频处理技术。文中给出的两个设计计算实例，表明了本文方法的有效性。
This paper presents a method to design a combined structure subject to multiple naturalfrequencies requirement by optimizing the connecting component between the substructures.The residual attached modes are added to the kept ones for each substructure to reduce thedegree of freedoms in the combined structure reanalysis. It improves the accruacy and effi-ciency of the calculation,The shifting technique is used for the substructure which has rigidbody modes.Examples show the effectiveness of the method given by this paper.
