镁合金网格壁板压弯成形数值模拟及实验研究

为探索镁合金整体壁板压弯成形的可行性,以及镁合金壁板压弯成形过程中金属的流动规律,对AZ31镁合金网格壁板压弯成形进行了数值模拟和实验研究。建立了有限元数值模拟的几何模型,采用有限元计算软件对AZ31镁合金网格壁板压弯成形过程进行了数值模拟研究,分析了镁合金网格壁板压弯成形中的温度场、应变场、应力场、破坏系数等的分布规律。确定了合适的AZ31镁合金壁板压弯成形工艺参数,并对镁合金网格壁板压弯成形进行了实验研究,获得了合格的镁合金网格壁板弯曲件,并分析了镁合金网格壁板成形件尺寸精度,模拟结果与实验结果相吻合,最大相对误差为16.7%。

Numerical simulation and experimental study on bending of magnesium alloy grid panel

In order to explore the feasibility of magnesium alloy integral panel bending and the law of metal flow in the bending process of magnesium alloy panel,the bending of AZ31 magnesium alloy grid panel was numerically simulated and experimentally studied.Then,the geometric model of finite element numerical simulation was established,the bending process of AZ31 magnesium alloy grid panel was simulated by finite element software,and the distributions of temperature field,strain field,stress field and failure coefficient in the bending of magnesium alloy grid panel were analyzed.Furthermore,the appropriate process parameters of AZ31 magnesium alloy panel were determined,the experimental research of bending for magnesium alloy grid panel was carried out,and the qualified bending parts of magnesium alloy grid panel were obtained.Finally,the dimensional accuracy of forming parts for magnesium alloy grid panel was analyzed,and the simulation results were in good agreement with the experimental results with the maximum relative error of 16.7%.