圆坯一次性横锻时的应力应变场  

Stress and Strain Field of Round-Billet during Cross-Forging Process with Only One Strike

作　　者：李胜祗[1] 陈大宏[1] 孙中建[1] 李连诗[2] 

机构地区：[1]安徽工业大学冶金工程系,马鞍山243002 [2]北京科技大学压力加工系,北京100083

出　　处：《北京科技大学学报》2002年第1期49-53,共5页Journal of University of Science and Technology Beijing

基　　金：安徽省教育厅重点科研计划项目资助(99JR0178ZD)

摘　　要：用 ＭＡＲＣ／Ａｕｔｏｆｏｒｇｅ有限元软件，对圆坯一次横锻过程进行了三维热—力耦合数值模拟．研究了金属变形的发展、流动规律，其结果与物理模拟研究的结果相吻合．还分析了工件的应力分布以及工具与工件的接触应力分布形态．通过分析发现：在圆坯一次性横锻过程中，尽管工件端部静水压力不大．但存在较大的横向拉应力．With the aid of FE code MARC/Autoforge, two-roll cross-forging process was simulated, and the development of deformation and the law of metal-flow were studied. The result from the simulation is in good agreement with that of the physical simulations. The stress distribution in the work-piece and contact pressure between the work-piece and tool were also analyzed. It is discovered that in cross-forging process with only one strike of the press large lateral stretch stress exists, although the hydrostatic pressure is positively small in the center of the round.

关 键 词：圆坯 横锻 塑性变形 数值模拟 有限元法 应力应变场 热力耦合分析 应力分布 应变分布 

分 类 号：TG316[金属学及工艺—金属压力加工] TG311