论文部分内容阅读
基于Archard理论,运用有限元软件对热冲压过程进行了数值模拟分析,计算了模具表面的磨损。通过改变热冲压工艺参数,获取模具磨损量随冲压速度及板料初始成形温度变化的规律。通过对热冲压过程的热力耦合模拟,获得了模具在冲压过程中的温度及应力分布规律。结果表明,模具磨损分布与温度场及应力场存在密切关系。基于响应面法对冲压工艺参数进行了优化设计,有效地减小了模具表面磨损量。
Based on the theory of Archard, the hot stamping process was simulated by finite element software and the wear of the mold surface was calculated. By changing the hot stamping process parameters, the rule of the change of the die wear with the stamping speed and the initial forming temperature of the sheet is obtained. Through the thermal coupling simulation of the hot stamping process, the temperature and stress distribution rules of the stamping die are obtained. The results show that there is a close relationship between the distribution of die wear and temperature and stress field. The stamping process parameters were optimized based on response surface method, which effectively reduced the amount of wear on the mold surface.