Research on the Forming Limit Diagram Based on Laser Shock Forming
Laser shock forming (LSF) of sheet metal is a novel technology in plastic deformation.It isnecessary to correctly predict the Forming Limit Diagram (FLD) based on LSF.New failure maximum thickness reduction rate criterion is used to determine the forming limit based on the numerical system during LSF.The relationship model between maximum thickness reduction rate and the strain path is built.In addition,the effects of strain path and strain-hardening exponent on forming limit are considered.The maximum thickness reduction rate under equi-biaxial tensile strain path can be determined easily during LSF and the expression of the criterion is determined finally.Then the limit strains under other strain paths between uniaxial tension to equi-biaxial tension can be determined by the criterion combined with numerical simulation of forming process.The criterion can predict forming limits for sheet metal exactly and makes it possible to determine forming limit strains under different strain paths only through equi-biaxial tensile test during LSF.
Laser shock forming (LSF) FLD Maximum thickness reduction rate
Yinfang Jiang Zhenzhou Tang Zhifei Li Lei Fang
School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
国际会议
重庆
英文
148-152
2010-12-11（万方平台首次上网日期，不代表论文的发表时间）