Transactions of Materials and Heat Treatment

Title：Study of inertial effect on simulation of sheet metal bending

Authors： HU Wei-cai ZHANG Zu-jun RUAN feng (College of Mechanical Engineering South China University of Technology Guangzhou 510640 China)

Unit：

KeyWords： bending numerical simulation inertial effect virtual punch velocity thickness

ClassificationCode：TG386

year,vol(issue):pagenumber：2008,33(2):143-145

Abstract：

In order to evaluate the inertial effect on simulating sheet metal bending by the dynamic explicit FEM,the finite element model was established for the welded pipe bending.The welded pipe bending was simulated and analyzed.Moreover,the simulation result and the experiment result were compared and studied.The effect of virtual punch velocity on the simulation of the sheet metal bending was investigated.The result shows that the inertial effect of the system is enhanced rapidly when virtual punch velocity exceeds a critical speed,thereby it leads to the distortion of the simulation result.The relation of thickness and the critical velocity was investigated.The result shows that the thicker of the sheet metal is,the bigger the critical velocity is.the critical velocity is 1000 mm·s-1 when the thickness is 1.2 mm and the critical velocity is 7000 mm·s-1 when the thickness is 5.0 mm

Funds：

广州市科技攻关计划项目(2007Z2-D9031)

Reference：

[1]余国庆,鲁世红.板料弯曲回弹的有限元模拟影响因素研究[J].模具工业,2004,(12):7-11.
[2]张晓静,周贤宾.板料成形回弹模拟[J].塑性工程学报,1999,6(3):56-62.
[3]张海明,董湘怀,兰箭,等.板料成形模拟中惯性效应的探讨[J].塑性工程学报,2002,9(1):22-26.
[4]王元勋,王书恒,沈为,等.矩形盒拉深成形的数值模拟与实验[J].华中科技大学学报(自然科学版),2006,34(12):80-82.
[5]王新华,袁联富.冲模结构图册[M].北京:机械工业出版社,2003.
[6]陈炜,王晓路,高霖.板料多步冲压回弹的数值模拟研究[J].塑性工程学报,2005,12(5):8-12.

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