MICRO-NUMERICAL SIMULATION OF DAMAGE-FAILURE PROCESS FOR CONCRETE MATERIAL

摘要：

Based on the surface trimming technique,a gradually Delaunay tetrahedron division scheme is proposed to mesh the test block of concrete which can be taken as an inhomogeneous three-phase composite consisting of mortar matrix,aggregates and the bond between matrix and aggregate in mesoscopic.Through this scheme,the sphere or ellipsoid aggregate can be meshed easily and the element amount generated is far less than that of the map mesh scheme generating on the same precision.By the division scheme,the 3D concrete meso finite element models are established.Finally,with these models,all kinds of numerical experiments such as uniaxial tensile test,uniaxial compress test and bending test of beam have been carried out,and their failure processes are also simulated.

关键词： Gradually Delaunay division Surface trim numerical experiments

作者: X.Z.Xia Q.Zhang Z.Li

作者单位: Institute of construct,Guangdong University of Technology,Guangzhou,510006,China & Department of Eng Department of Engineering Mechanics,Hohai University,Nanjing,210098,China Guangdong Planning & Design Institute for Water Transportation,Guangzhou,510050,China

会议类型: 国际会议

会议名称: 第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)

会议地点: 安徽黄山

会议语种:英文

页码: 1468-1472

在线出版日期: 2008-06-03（万方平台首次上网日期，不代表论文的发表时间）