气囊抛光工具与工件接触区压力及应力的分布规律研究  

Distribution Law of Pressure and Stress of Contact Area between Bonnet Polishing Tool and Workpiece

作　　者：郑高安[1] 方贵盛[1] 金明生[2] 

机构地区：[1]浙江水利水电学院机械电子工程系,浙江杭州310018 [2]浙江工业大学机械工程学院,浙江杭州310032

出　　处：《浙江水利水电专科学校学报》2013年第2期64-67,共4页Journal of Zhejiang Water Conservancy and Hydropower College

基　　金：浙江省自然科学科研基金资助项目(M503099);浙江省科技计划重点科研资助项目(2006C21041)

摘　　要：分析了柔性抛光工具中不同壁厚的气囊与金属工件接触时接触区的压力和应力分布特征以及气囊接触变形情况;同时借助于唯象理论,获得气囊材料的本构模型,并结合有限元软件ANSYS对接触区应力进行仿真分析.分析结果表明:随着气囊的壁厚与硬度的减少,其与金属工件接触区之间的压力和应力布由"Λ"型向"M"型再向"n"型转变,逐渐趋于均匀.This paper analyzes the distribution law of stress of contact area between bonnet polishing tool and workpiece and the situation of contact deformation of bonnet. At the same time, by means of phenomenological theory, to achieve the constitutive model of bonnet, and combining FEM software ANSYS to put forward simulation analysis in the contact area. The result shows as follows ： with the reduce of thickness and hardness of bonnet, the pressure and stress between bonnet polishing tool and workpiece ehange from ＂A＂ type to ＂M＂ type, then to ＂n＂, gradually tend to be uniform.

关 键 词：气囊抛光工具 接触区 压力 应力 仿真 

分 类 号：TH123.4[机械工程—机械设计及理论]