Constrained finite element method for the modal analysis of thin-walled members with holes

摘要

In this paper a new method for modal decomposition of thin-walled members is presented. The method is based on the finite element method, by using a specific shell finite element. The specific finite element makes it possible to perform modal decomposition essentially identically as in the constrained finite strip method. The method, therefore, can be termed as constrained finite element method. In the paper the method is briefly presented, then its applicability is demonstrated. Since one of the practically useful feature of the method that it can easily handle holes, there is a special focus of the demonstrative examples on members with holes.