基于Deform-3D的镁合金板材弯曲过程有限元模拟  

Finite Element Simulation of Bending Process of Mg-Alloy Sheet Based on Deform-3D

作　　者：钱炳芸[1] 

机构地区：[1]淮北职业技术学院机电工程系,安徽淮北235000

出　　处：《热加工工艺》2014年第23期120-122,127,共4页Hot Working Technology

基　　金：安徽省自然科学基金项目(KJ2012Z354)

摘　　要：运用Deform-3D有限元软件对AZ31镁合金板材的V型弯曲过程进行了模拟,分析了板材在弯曲过程中的应变、应力及流速。结果表明,随着弯曲程度的增加,镁合金板材在变形过程中的应变、应力及流速逐渐增大。几何、应变及应力中性层沿着镁合金板材厚度方向不在同一位置,并且在弯曲变形时应力中性层流动速度比应变中性层的速度要快。同时,板材的应变和应力中性层逐渐向几何中性层靠拢,这说明镁合金沿着板材厚度方向出现不均匀的纵向伸长变形。The V-bending process of Mg-alloy sheet was simulated by using the Deform - 3D finite element software. The strain, stress and velocity of the sheet in bending process were analyzed. The results show that the strain, stress and velocity increase gradually with the increase of the bending degree. The geometric neutral layer, stress neutral layer and strain neutral layer are not in the same place along the sheet thickness direction. And the flow velocity of stress neutral layer is faster than that of strain neutral layer. Meanwhile, the neutral layers of stress and strain of the sheet gradually move closer to geometric neutral layer. This shows that the magnesium alloy along the thickness direction of the sheet produces inhomogeneous longitudinal elongation deformation.

关 键 词：镁合金 板材 弯曲 有限元模拟 

分 类 号：TG389[金属学及工艺—金属压力加工]