摘要
在动态子结构法中子结构的综合要求子结构的界面节点完全重合,限制了动态子结构法的应用。针对这个问题,文章提出了一种可将两个非协调子结构直接综合的方法。通过建立不重合的界面节点位移之间的关系,位移协调条件被扩展到了非协调子结构。根据非协调子结构的广义位移协调条件对子结构的减缩动力学方程做演化,将子结构界面节点位移自由度作替换,使非协调的子结构具有相同的界面自由度,从而可以按照经典的方法将子结构综合。对壳单元算例的测试结果表明,非协调子结构的直接综合方法是可行的。
The synthesis of substructure in dynamic substructure method requires the interface nodes of substructures to coincide completely, which limits the application of dynamic substructure method. Aiming at this problem, this paper proposes a method that can directly synthesize two incompatible substructures. By establishing the relationship between displacements of the interface nodes that do not coincide, the displacement compatibility condition is extended to incompatible substructures. According to the generalized displacement compatibility condition of incompatible substructures, the reduced dynamic equation of substructures is evolved, and the displacement degrees of freedom of substructure interface nodes are replaced, so that the incompatible substructures have the same interface degrees of freedom, and the substructures can be synthesized according to the classical method. The test results of shell element examples show that the direct synthesis method of incompatible substructures is feasible.
作者
温靖
尚菲菲
裔英明
WEN Jing;SHANG Feifei;YI Yingming(Guangzhou Industrial Technology Research Institute,Guangzhou,Guangdong 511458)
出处
《工程技术研究》
2022年第22期8-10,共3页
Engineering and Technological Research
基金
广州市基础研究计划基础与应用基础研究项目(NO.202102021301)。
关键词
结构动力学
动态子结构法
非协调子结构
子结构综合
structural dynamics
dynamic substructure method
incompatible substructure
substructure synthesis
