过渡单元和层合单元在混凝土三维温度场仿真计算中的应用  

Application of Transitional Element and Multi-layer Anisotropic Element to Simulative Calculation of 3-D Temperature Field of Concrete

作　　者：曹为民[1] 谢先坤 朱岳明[3] 

机构地区：[1]水利部淮河水利委员会,安徽蚌埠233001 [2]上海市水利工程设计研究院,上海200051 [3]河海大学水利水电工程学院,江苏南京210098

出　　处：《水利水电技术》2002年第4期1-4,共4页Water Resources and Hydropower Engineering

摘　　要：为模拟施工期混凝土分段成层浇筑的温度场,提出12结点与10结点双线性过渡单元和层合单元模型,运用双线性过渡单元可以解决在网格浮动过程中混凝土段与段之间单元交界面的温度和位移的协调性,运用层合单元可以在不降低计算精度的前提下使计算规模显著降低,大大提高了计算效率,甚至使某些复杂超大规模的水工结构问题的仿真求解大为简单.A bilinear10-node and12-node transitional element model and a multi-layer element model are proposed in order to simulate the temperature field of concrete with multi-layer and multi-block.The problem of incompatibility among the elements located on the block's interfaces in calculation with FEM is solved by introducing the bilinear transitional elements.The efforts of FEM calculation are essentially reduced by use of the multi-layer element and the calculation precision is not reduced.As a consequence the efficiency of calculation is essentially increased.

关 键 词：温度场 过渡单元 层合单元 网格浮动 有限元法 

分 类 号：TV331[水利工程—水工结构工程]