VIBRATION ANALYSIS OF FLUID SOLID SYSTEMS USING A FINITE-ELEMENT DISPLACEMENT FORMULATION

被引:79
作者
CHEN, HC
TAYLOR, RL
机构
[1] Department of Civil Engineering, University of California, Berkeley, California
关键词
D O I
10.1002/nme.1620290402
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This report presents a finite element solution for the vibration interaction between an inviscid fluid and a solid. The equation of motion governing the inviscid fluid is expressed in terms of the displacements. This ensures that compatibility and equilibrium will be satisfied automatically along the interface of the coupled systems. To suppress circulation modes with non‐zero energy, reduced integration is used when computing the element stiffness matrix contributed by the fluid. In addition, a projection is used on the element mass matrix in order to remove the spurious modes which result from the use of reduced integration. Numerical examples for both fluid and coupled fluid–solid systems are performed and the results are shown. Copyright © 1990 John Wiley & Sons, Ltd
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页码:683 / 698
页数:16
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