AN ASSUMED STRAIN METHOD FOR ISOGEOMETRIC FINITE ELEMENT MODELING

摘要：

The isogeometric finite element method based upon the non-uniform rational B-spIine has attracted remarkable research attention since this approach gives an excellent integration between the computeraided geometry design and the finite element analysis. Moreover it is very straightforward to construct higher order smooth NURBS approximation for this method. In this work an assumed strain formulation by using the sub-domain strain smoothing integration is developed for the isogeometric finite element analysis. This method is implemented through the subdivision of an element into several subdomains where the smoothed strain is constructed in the parametric space for the integration of the internal energy. The derivatives of shape functions are avoided in this formulation. Numerical results demonstrate that the present formulation is very effective and efficient.

作者: Hanjie Zhang Dongdong Wang

作者单位: Department of Civil Engineering,Xiamen University,Xiamen,Fujian 361005,China

会议类型: 国际会议

会议名称: The International Symposium on Innovation & Sustainability of Structures in Civil Engineering(2011年土木工程结构创新与可持续发展国际会议)

会议地点: 厦门

会议语种:英文

页码: 1161-1166

在线出版日期: 2011-10-28（万方平台首次上网日期，不代表论文的发表时间）