基于刚塑性有限元法的AZ31镁合金板材轧制模拟分析  

Simulation of AZ31 Magnesium Alloy Rolling Plate Based on Rigid-plastic Finite Element Method

作　　者：王晓辉[1] 

机构地区：[1]赤峰学院建筑与机械工程学院,内蒙古赤峰024000

出　　处：《热加工工艺》2014年第17期141-144,共4页Hot Working Technology

摘　　要：采用刚塑性有限元法对AZ31镁合金板材的轧制过程进行了数值模拟。分析了AZ31镁合金板材同步或异步轧制过程中,上下辊的转速比对板材的应力分布和沿板厚方向的等效应变影响。结果表明:随着上下辊转速比的减小,轧制后板材的应力增加;最大等效应变发生在辊速较大的板材一侧,分布曲线呈"U"型;异步轧制所需的轧制力较小。The rolling process of AZ31 magnesium alloy plate was numerically simulatied by adopting the rigid-plasticmethod. The effects of rotational speed ratio between upper-roller and lower-roller on the stress distribution of plate andequivalent strain along the thickness of the plate were analyzed during synchronous rolling or asynchronous rolling process.The results show that the stress of the plate after rolling increases with the ratio of rotational speed between upper-roller andlower-roller decreasing; the maximum equivalent strain occurs at the side of the roller with larger rotational speed, anddistribution curve of which is ＂U＂ type; the rolling force during asynchronous process is smaller.

关 键 词：AZ31镁合金 轧制过程 转速比 应力应变 

分 类 号：TG339[金属学及工艺—金属压力加工]