全膜润滑金属成形工艺的有限元分析  

A Finite Element Analysis of Full Film Lubricated Metal Forming Process

作　　者：郭力[1] 胡芳[1] 刘红霞[1] 

机构地区：[1]湖南大学机械与汽车工程学院现代车身技术教育部重点实验室,长沙410082

出　　处：《润滑与密封》2005年第2期29-32,共4页Lubrication Engineering

摘　　要：针对求解润滑模型的方法只适用于轴对称和平面应变情况, 提出了全润滑膜润滑和金属成形有限元法相结合的统一方法, 既适用于稳态和非稳态的三维成形工艺, 也适用于轴对称和平面应变情况。采用轴对称拉深成形实验, 证明这种方法是正确的。该法大幅度增加了仿真的精度, 且理论计算的润滑膜厚与实测值相一致。Very few attempts have ever been made to analyze a complex full film lubricated metal forming process numerically,due to the fact that usually the methods of solving the lubrication model are available for axisymmetric and plane strain cases only.Accordingly,a unified procedure of combining the finite element codes of full film lubrication and metal forming was developed for either steady or unsteady three-dimensional processes including axisymmetric and plane strain cases.The availability of the method was proved by the experiment of an axisymmetric stretch forming process. It showed that the precision of simulation can be enhanced substantially by the present method.A better agreement between predicted and experimental film thickness verifies the superiority of the proposed method over the prior studies.

关 键 词：金属成形 润滑膜 拉深成形 成形工艺 平面应变 精度 正确 润滑模型 有限元分析 膜厚 

分 类 号：TH117[机械工程—机械设计及理论] TG3[金属学及工艺—金属压力加工]