摘要
本文用流体边界元结合結构模态综合技术对大型结构的流固耦合问题的计算方法进行了研究。基于对用常数边界元计算附连水质量的物理意义的研究,并结合结构部分的计算,提出了一种假设的模态——拟湿模态。数值计算表明,本文的理论结果有足够的精度。
This paper presents a numerical method to solve the fluid-structure coupling vibration of the large structure with complicated configurations through boundary element method and model synthesis technique. Some terms of the added mass matrix of the whole structure derived by the boundary element method, are added to the corresponding terms of the mass matrices of the substructure. The socalled pseude-wet modes were thus obtained. Numerical calculation shows that the result of theoretical analysis is accurate enough.
基金
国家自然科学基金
关键词
流固耦合振动
边界元
模态
pseude-wet mode
boundary element method
coupling vibration
