机械设备流固耦合动力分析的有效方法  

EFFECTIVE METHOD FOR DYNAMIC ANALYSIS OF INTERACTION OF FLUID AND STRUCTURE OF MECHANICAL EQUIPMENT

作　　者：袁振[1,2] 刘玉民[1,2] 孙开明 张洪战[1,2] 

机构地区：[1]中国科技大学力学与机械工程系,合肥230026 [2]郑州机械研究所先进制造技术研究中心,郑州450052

出　　处：《机械强度》2000年第1期16-17,共2页Journal of Mechanical Strength

摘　　要：提出流固耦合动力分析的新方法。该法通过结构动力学的有限元求解方程和 Newmark法 ,导出了新的迭代公式。流场的动压力使弹性体的动态特性变为载荷非线性问题 ;同时 ,固体位移场的变形作用使流场成为可变域流场。这些问题都可用本法得以解决。文中给出算例和工程应用实例。数值解结果表明 ,该法收敛速度快 ,效率高 。The dynamic behavior analysis of an elastic structure interacting with a fluid may be considered for mechanical equipment. A new method is proposed in this paper for dynamic analysis of interaction of fluid and structure. This method describes a new iteration equation which is derived according to the finite element equations of a dynamic problem and Newmark method. The dynamic behavior of this structure, which is a load nonlinear problem under the pressure of the fluid, is solved through this method. The flow field with variable fluid domain under the dynamic respond of this structure is solved as well. Two numerical examples are presented in this paper finally. The solution results illustrate the effectiveness of this method and the difficulty of solving interaction of fluid and structure has been overcome successfully.

关 键 词：流固耦合 动力分析 有限元 机械设备 

分 类 号：TH113[机械工程—机械设计及理论] TB122[理学—工程力学]