扁挤压筒内孔形状对应力分布的影响研究  

Influence of Inside contour line of rectangular container on stresses distribution

作　　者：谢水生[1] 贺金宇[1] 徐盈辉[1] 张学军[1] 朱琳[1] 刘静安[2] 

机构地区：[1]北京有色金属研究总院,100088 [2]西南铝加工厂,401326

出　　处：《塑性工程学报》2002年第3期28-30,共3页Journal of Plasticity Engineering

基　　金：国家计委产业化前期关键技术项目 (98 0 2 0 5 )资助

摘　　要：在对过盈装配扁挤压筒的结构参数进行优化的基础上 ,应用数值分析方法进一步研究和分析扁挤压筒的内孔形状对等效应力的峰值的影响 ,获得了内孔形状变化对等效应力的峰值的影响规律 ,并对内孔形状进行了优化。结果表明 ,内孔形状经过优化后的扁挤压筒 ,内套圆角处的应力值得到明显下降 ,筒体内的等效应力的峰值明显降低 ,下降幅度为 14 5 %。It is an effective measure that the optimized structural parameter of rectangular container with over-profit assembly. Based on the optimized structural parameter,by changing inside contour line of rectangular container stresses distribution has been improved a lot in this paper. A cartouche line has been used to replace the circular contour line. The ellipticity from e=1.0 to e=2.0 have been selected in the calculation.The changing rule of stress distribution has been obtained with the changing of ellipticity. The results show that the stress of ingide round eorner of optimized inside contour line of rectang ular container drops evidently.The effective peak value of inner container reduced remarkably.

关 键 词：孔形状 应力分布 扁挤压筒 有限元法 应力分析 扁宽型材 挤压工具 

分 类 号：TG375.43[金属学及工艺—金属压力加工]