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《Engineering Journal of Wuhan University》 2013-01
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Finite element simulation of welding process and real-time monitoring assessment

WANG Ruolin1,GAO Wei1,2,YE Xiaowei2,NI Yiqing2(1.School of Civil and Architectural Engineering,Wuhan University,Wuhan 430072,China; 2.Shenzhen Research Institute of Hongkong Polytechnic University,Shenzhen 518057,China)  
With the fast development of welding theory and computer finite element simulation analysis,the use of numerical simulation to predict the formation and distribution of welding residual stress can already get more satisfactory results.However,due to the limitations of the complexity of the welding process and numerical simulation,finite element simulation and the actual measured results are significantly different;so that the real-time measuring the welding residual stress is still necessary for engineering and research.Through the real-time monitoring of the welding process,and the resuts are compared with the finite element simulation results of welding process,the reasons of the difference of values between simulation and measuring on site are summarized,which shows the superiority of the actual monitoring of the welding process.Such real-time measuring technology can be used in structural health monitoring for welding steel structures.
【Fund】: 国家自然科学基金项目(编号:51278387);; 深圳市科技研发资金基础研究计划(编号:JC201105201141A)
【CateGory Index】: TU317
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