The numerical simulation of the crack welding process is reported in this paper. The thermo-electro-structural coupled-field finite element analysis is adopted to investigate the welding process of crack surfaces. In the simulation, the pressure-dependent and temperature-dependent electrical contact conditions are considered. From the results, the crack surfaces can melt and weld together under the compressive load and electric current. The contact pressure effect must be considered in the finite element analysis to obtain more practical results.<\/p>\r\n","references":"[1]\tKudryavtsev BA, Parton VZ and Rubinskii BD. Electromagnetic and thermoelastic fields in a conducting plate with a cut of finite length. Solids. Mech. 17, pp. 110\u2013118, 1982. \r\n[2]\tParton VZ and Kudryavtsev BA. Electromagnetoelasticity. Gordon and Breach, New York, 1988. \r\n[3]\tCai GX and Yuan FG. Electric current-induced stresses at the crack tip in conductors. Int. J. Fract. 96, pp. 279\u2013301, 1999. \r\n[4]\tFu YM, Bai XZ, Qiao GY, Hu YD and Luan JY. Technique for producing crack arrest by electromagnetic heating. Mater. Sci. Tech. 17, pp. 1653\u20131656, 2001. \r\n[5]\tHasanyan D, Librescu L, Qin Z and Young RD. Thermoelastic cracked plates carrying nonstationary electrical current. J. Therm. Stress. 28, pp. 729\u2013745, 2005. \r\n[6]\tQin Z, Librescu L and Hasanyan D. Joule heating and its implications on crack detection\/arrest in electrically conductive circular cylindrical shells. J. Therm. Stress. 30, pp. 623\u2212637, 2007. \r\n[7]\tLiu TJC. Thermo-electro-structural coupled analyses of crack arrest by Joule heating. Theor. Appl. Fract. Mech. 49, pp. 171\u2013184, 2008.\r\n[8]\tLiu TJC. Finite element modeling of melting crack tip under thermo- electric Joule heating. Engng. Fract. Mech. 78, pp. 666\uf02d684, 2011. \r\n[9]\tLiu TJC. Fracture mechanics of steel plate under Joule heating analyzed by energy density criterion. Theor. Appl. Fract. Mech. 56, pp. 154\uf02d161, 2011.\r\n[10]\tTsai CL, Dai WL, Dickinson DW and Papritan JC. Analysis and development of a real-time control methodology in resistance spot welding. Weld. J. 70, pp. s339\u2013351, 1991.\r\n[11]\tSun X and Dong P. Analysis of aluminum resistance spot welding processes using coupled finite element procedures. Weld. J. 79, pp. s215\uf02ds221, 2000.\r\n[12]\tANSYS, Inc.. ANSYS 14.0 Mechanical APDL Theory Reference. SAS IP, Inc., USA, 2011. \r\n[13]\tBarsoum RS. On the use of isoparametric finite elements in linear fracture mechanics. Int. J. Numer. Meth. Eng. 10, pp. 25\uf02d37, 1976.\r\n","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 85, 2014"}