文献类型：期刊文献

中文题名：缩口件不同过渡段形式的变形机理研究

英文题名：Study on Deformation Mechanism of Different Transition Forms of Necking Part

作者：张国智[1]

第一作者：张国智

机构：[1]新乡学院机电工程学院,河南新乡453003

第一机构：新乡学院机电工程学院

年份：2022

期号：5

起止页码：48-51

中文期刊名：机械设计与制造

外文期刊名：Machinery Design & Manufacture

收录：CSTPCD;;北大核心:【北大核心2020】；

基金：河南省教育厅高等学校重点科研项目(16A460022);新乡学院青年骨干教师项目(1244160012)。

语种：中文

中文关键词：缩口件;过渡;变形机理;总能量;直线段;凹圆弧

外文关键词：Necking Part;Transition;Deformation Mechanism;Total Energy;Straight-Line Transition;Concave-Arc Transition

摘要：研究缩口件过渡段变形成形机理。将宏观塑性理论的能量法及矢量分析解法相结合,建立了缩口件不同过渡形式的克服总能量的理论模型,通过对不同过渡形式的铜管缩口实验,验证了理论模型的准确性,此外,依据所建立的理论模型,分析了不同过渡形式对成形的影响,可知,直线段过渡所克服阻力最小,凹圆弧过渡所克服阻力最大,在此基础上,给出了缩口件过渡优化策略,并通过实验验证了策略的有效性。得到的变形规律可为精密缩口工艺控制提供了方法和依据。
The deformation mechanism of the transition form of the necking part was studied. Combining energy method and vector analysis method of macroscopic plasticity theory,a theoretical model for overcoming total energy in different transition forms of necking parts was established. The accuracy of the theoretical model was verified by experiments of copper tube necking with different transition forms. In addition,according to the theoretical model established,the influence of different transition forms on forming was analyzed. It is known that the resistance overcomed by straight-line transition is the smallest and that by concave-arc transition is the largest. On this basis,the transition optimization strategy of necking parts was presented,and the effectiveness of the strategy was verified by experiments. The obtained deformation law can provide a method and basis for precise necking process control.