） 摘要： 基于“细胞元”索引存贮方案提出了一种仅组集有限元刚度矩阵中“非零元素”的方法
田红旗
有限元刚度矩阵的压缩存贮组集及快速求解[EB/OL]
北京：中国科技论文在线
） Abstract： A procedure to assemble only non-zero coefficients of a global stiffness matrix of finite element analysis in a one-dimensional array is proposed, which utilizes cell element index storage scheme
One of the important characteristics of the scheme is that the storage and solution requirements are independent of the numbering pattern of nodes and elements in finite element mesh, which is suitable for adaptively refined finite element analysis
For one-dimension compressed format of sparse structure matrix, two solution methods for large sparse matrix equations are discussed in this paper, including sparse direct solve method and preconditioned conjugate gradient method
The procedure has been implemented in a computer program
At last a finite element model of a subway car-body is carried out using the program
The results are in accordance with the analysis results obtained by commercial FEA codes ANSYS5
7
The difference doesn’t exceed 2 percent
The fact shows that the storage scheme and solution method proposed in this paper are correct and reliable
Keywords： cell element
对稀疏矩阵直接解法和预处理共轭梯度法进行了探讨
说明提出的存贮方案和求解方法是正确可靠的
适于进行“自适应网格细化”有限元分析
该方法最突出的特点是计算所需内存空间与有限元网格节点和单元的编号模式无关
针对刚度矩阵的“一维压缩存贮”格式
preconditioned conjugate gradient 下载PDF阅读器 PDF全文下载： 初稿 （ 767 ） 作者简介： 通信联系人： 【收录情况】 中国科技论文在线： 姚松
并编制了相应的计算机程序对某地铁车辆有限元模型进行了分析
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