计算力学学报2018，Vol.35Issue(1)：56-61,6.DOI:10.7511/jslx20161228001
局部有限元模型边界条件的直接传递方法
Direct method for transmission of boundary conditions of local finite element model
摘要
Abstract
A new method namely partial mixed finite element method in which the nodal forces or nodal displacements can be transferred from the global model to the refined local finite element model (RLFEM) directly and easily is proposed in this paper.To establish a segment of transitional elements surrounding of the RLFEM,the element type and simulation mode of these elements are consistent with the global finite element model,the relative coordinates of nodes on outer boundary of these transitional elements are correspond with the global finite element model,while the inner boundary of these transitional elements is connected with the RLFEM using surface-based constraint method.The nodal forces or nodal displacements obtained from global analysis are applied directly on the outer boundary of these transitional elements according to corresponding coordinates,so the boundary conditions can be transferred to the RLFEM by the transitional elements.The practicality and effectiveness of this method are verified through the local finite element analysis of steel-concrete joint of Hongshui River Bridge in Guizhou.关键词
精细化有限元分析/过渡单元/边界条件/ANSYSKey words
refined finite element analysis/transitional element/boundary conditions/ANSYS分类
交通工程引用本文复制引用
伍彦斌,黄方林..局部有限元模型边界条件的直接传递方法[J].计算力学学报,2018,35(1):56-61,6.基金项目
贵州省交通运输厅科技项目(2013-122-001)资助项目. （2013-122-001）
