中文摘要：

采用Gleeble3500热模拟实验机进行了单向拉伸实验，分析了AZ31镁合金板材的力学性能；以此实验数据为基础，对温热冲压过程进行了数值模拟，研究了拉深温度、压边力等工艺因素对镁合金板材成形性能的影响；通过极限拉深比实验，对数值模拟结果进行了实验验证。结果表明：在极限拉深温度150℃，极限拉深速度15mm／s，固定压边力的工艺条件下，极限拉深比能够达到2．5。模拟结果表明：模拟结果和实验结果具有良好的一致性；采用变压边力可以明显提高板材的冲压性能，极限拉深比将达到5．0。

英文摘要：

The uniaxial tensile test was conducted by using Gleeble 3500 thermal-mechanical simulator, and the mechanical property of AZ31 magnesium alloy sheet was analyzed. The test results were then employed in the numerical simulation of warm drawing process, and the influences of process parameters such as drawing temperature, blank holder force were investigated. In order to validate the simulation results, the limiting drawing ratio tests were also performed. The results show that, under the technique condition of limit forming temperature of 150℃ and limit drawing velocity of 15mm/s, the limiting drawing ratio can reach 2.5. The simulation results show that, simulation results are consistent with the experimental results. Using variable blank holder force can remarkably improve the forming performance, and the limiting drawing ratio would reach 5.0.