Use of the finite element displacement method to solve solid-fluid interaction vibration problems
It is shown through comparison to experimental, theoretical, and other finite element formulations that the finite element displacement method can solve accurately and economically a certain class of solid-fluid eigenvalue problems. The problems considered are small displacements in the absence of viscous damping and are 2-D and 3-D in nature. In this study the advantages of the finite element method (in particular the displacement formulation) is apparent in that a large structure consisting of the cylinders, support flanges, fluid, and other experimental boundaries could be modeled to yield good correlation to experimental data. The ability to handle large problems with standard structural programs is the key advantage of the displacement fluid method. The greatest obstacle is the inability of the analyst to inhibit those rotational degrees of freedom that are unnecessary to his fluid-structure vibration problem. With judicious use of element formulation, boundary conditions and modeling, the displacement finite element method can be successfully used to predict solid-fluid response to vibration and seismic loading.
- Research Organization:
- Babcock and Wilcox Co., Akron, OH (USA). Nuclear Equipment Div.
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- EW-76-C-15-0003
- OSTI ID:
- 6513288
- Report Number(s):
- CONF-781202--33
- Country of Publication:
- United States
- Language:
- English
Similar Records
A discrete geometric approach to solving time independent Schroedinger equation