Numerical modeling of concrete hydraulic fracturing with extended finite element method  

作　　者：REN QingWen DONG YuWen YU TianTang 

机构地区：[1]Department of Engineering Mechanics,Hohai University,Nanjing 210098,China [2]College of River and Ocean Engineering,Chongqing Jiaotong University,Chongqing 400074,China

出　　处：《Science China(Technological Sciences)》2009年第3期559-565,共7页中国科学（技术科学英文版）

基　　金：Supported by the National Natural Science Foundation of China (Grant Nos. 50539030, 50609004);the National Basic Research Program of China ("973" Program) (Grant No. 2007CB714104)

摘　　要：The extended finite element method (XFEM) is a new numerical method for modeling discontinuity. Research about numerical modeling for concrete hydraulic fracturing by XFEM is explored. By building the virtual work principle of the fracture problem considering water pressure on the crack surface, the governing equations of XFEM for hydraulic fracture modeling are derived. Implementation of the XFEM for hydraulic fracturing is presented. Finally, the method is verified by two examples and the advan- tages of the XFEM for hydraulic fracturing analysis are displayed.The extended finite element method (XFEM) is a new numerical method for modeling discontinuity. Research about numerical modeling for concrete hydraulic fracturing by XFEM is explored. By building the virtual work principle of the fracture problem considering water pressure on the crack surface, the governing equations of XFEM for hydraulic fracture modeling are derived. Implementation of the XFEM for hydraulic fracturing is presented. Finally, the method is verified by two examples and the advantages of the XFEM for hydraulic fracturing analysis are displayed.

关 键 词：extended FINITE element method (XFEM) HYDRAULIC FRACTURE CONCRETE NUMERICAL modeling 

分 类 号：TV33[水利工程—水工结构工程] TV313