Numerical Simulation on Weld Joint Offset for Tailor-welded Blank in Multi-point Forming
Multi-point forming(MPF)is a novel manufacturing technique for three-dimensional sheet metal.It employs two reconfigurahle element groups to approximate the continuous upper and lower solid dies.With the technique,rapid fabrication of 3D sheet metal part is realized.In this paper, to investigate the feasibility of the multi-point forming for the tailor-welded blank( TWB ),the explicit finite element model on TWB in MPF is established,then spherical surface TWB is selected as an example to simulate weld joint offset defect in the process of MPF,and finally method to suppress generation of defect is proposed.The simulation results show that in MPF for spherical surface part,weld joint removes to thick blank direction in zone of expanding and suspending,but to think blank in zone of blank holder;weld joint offset can be controlled effectively by adopting stepped blank holder and applying proper blank holder force.
multi-point forming weld joint offset numerical simulation tailor-welded blank
Wei Liu Mingzhe Li
School of Mechanical & Electrical Engineering Henan University of Technology Zhengzhou, China Roll Forging Institute Jilin University Changchun, China
国际会议
长沙
英文
1092-1095
2009-10-10（万方平台首次上网日期，不代表论文的发表时间）