Abstract
An integration scheme for finite elements on the boundary of analysis domain in structured finite element analysis is proposed in this paper. In structured finite element analysis, the structured grid is adopted as finite elements and the inconsistency between boundary of finite elements and that of analysis domain occurs. For accurate integration of weak-formed governing equation, accurate numerical integration scheme, such as gauss integration, and appropriate evaluation of integration region must be incorporated. In this paper, Newton-Cotes integration technique with sub-cell evaluation of integration region is proposed and efficient integration of element stiffness matrices on the boundary of analysis domain is achieved.
