大型工件间推挤式等通道转角大应变技术模具受力分析

• 作 者: 马文海 许晓静 卢予东 成城 陆文俊 郭云飞 王子路
• 机 构: 江苏大学先进制造与现代装备技术工程研究院,
• 出 处: 热加工工艺
• 发表日期: 2014年19期
• 关键词: 大型工件 模具 ECAP 工件间推挤式 转角 模具应力 变形应力 受力分析 凹模 应变规律

运用有限元软件DEFORM-3D研究了大型工件间推挤式等通道转角大应变技术模具受力。结果表明,它的载荷变化和应变规律与小型ECAP(equal channel angular pressing)极为类似。压头的最大应力位于压头与工件接触部分外侧,其值为原始工件材料变形应力的10.7倍。凹模的最大应力位于压头与工件接触部分周围,其值为原始工件材料变形应力的6.43倍。

The finite element software DEFORM-3D was used to study the force applied to the large strain of the large-sized workpiece by the push-to-go method. The results show that its load variation and strain law are very similar to those of the small ECAP (equal channel angular pressing). The maximum stress of the indenter lies outside the contact part of the indenter with the workpiece, which is 10.7 times the deformation stress of the original workpiece material. The maximum stress of the die is located around the indenter in contact with the workpiece, which is 6.43 times the deformation stress of the original workpiece.