文档介绍：2014 届毕业设计论文学生姓名: 鲁飞学号: 1202100217 所在学院: 机械与动力工程学院专业: 机械工程及自动化设计题目: 回转支承材料及性能研究指导教师: 洪荣晶 201 4年6月3日南京工业大学本科生毕业设计(论文) 回转支承材料及性能研究摘要国内常用的回转支承内外圈材料为 50Mn 和 42CrMo ,但是材料发生滚道剥落、过度磨损的情况却屡见不鲜。本文以赫兹理论和有限元法为基础,对 50M n 和 42CrMo 材料的接触性能进行研究,主要内容如下: ( 1) 讨论 50Mn 和 42CrMo 的材料特点,基于经典赫兹接触理论对两种材料进行接触应力计算,并将计算结果进行对比。( 2) 创建回转支承滚道与滚珠接触模型,利用 ABAQUS 软件对模型进行有限元分析,将仿真结果与理论计算结果进行对比。( 3) 根据 50Mn 和 42CrMo 的有限元分析应力云图,探讨两种材料的性能差异。( 4) 根据赫兹理论公式,推算出泊松比、弹性模量与材料接触性能之间的关系;根据金相图,观察 50Mn 热处理前后的性能变化。关键词:回转支承; 50Mn ; 42CrMo ;接触应力;有限元分析 Abstract II3 Research on material and property of slewing bearing Abstract 50Mn and 42CrMo are often used to make outer ring of slewing bearing,but it mon to see that the material occurs raceway spalling and excessive paper studies the contact performance of 50Mn and 42CrMo based on Hertz theory and finite element analysis,The main contents are as follow: (1)Discuss the characteristics of 50Mn and 42CrMo,calculate the contact stress of that two material based on Hertz theory,pare the two results. (2)Create a model with a ball and raceway of slewing bearing,the model is meshed and analysis by pare the simulation results and theoretical calculations. (3)According 50 Mn and 42CrMo FEA stress cloud to explore difference of performance between the two materials (4)According Hertz theory formular,calculate the relationship between modulus of elasticity , Poisson ’s ratio and the properties of material;According the phase diagram,observe the change of 50Mn ’s properties. Kye words : slewing bearing ; 50Mn ; 42CrMo ; contact stress ; Finite Element Analysis 南京工业大学本科生毕业设计(论文) III 目录第一章绪论................................................................................................................................ 1 研究的背景和意义.............................................................................................................. 1 回转支承材料的研究现状........................................................................................... 2 国内研究现状............