摘要
The electromagnetic forming is a procedure of high-speed processing,which favors the increase of the formability of some plastically deformed metals.In order to evaluate the capacity of some light metals,such as aluminum and its alloys,to be deformed through this procedure,it is useful to know the stress and strain state that occurs in the material during forming.In this work,the modeling of stresses and strains in electromagnetically deformed AlMn0.5Mg0.5 sheet was made.The modeling was achieved using the finite element method and it was verified through experimental tests.To determine the residual stresses,the X-ray diffraction method was used.The strains were established by measuring the displacements of the nodes in the network inscribed on the specimen by means of three coordinates measuring machine.A good agreement between the modeling results and experimental data was found.
电磁成形是一种高速成形技术,可以提高一些塑性变形金属的成形性。为评价轻金属如铝和铝合金的电磁成形的能力,需要研究材料成形过程中的应力和应变状态。对电磁成形AlMn0.5Mg0.5板材的应力和应变进行有限元建模并通过实验进行验证。采用X射线衍射确定材料中的残余应力。采用三轴试验机,通过刻在样品上网格点的位移计算应变。建模结果与实验数据具有很好的一致性。
作者简介
Corresponding author： Dorin LUCA; Tel： ＋40-232278688; Fax： ＋40-232230009; E-mail： dluca@tuiasi.ro
