套管防磨橡胶衬套的热-接触有限元分析  

FEM Thermal-Contact Analysis for Sleeve Antifriction Rubber Bushing

作　　者：李海 周玉卉 蔡雪豪 孟迪 Li Hai;Zhou Yuhui;Cai Xuehao;Meng Di(Aecc South Industry Company Limited,Hu'nan,412002;Aero-engine Components Manufacturing Limited Company of Zhuzhou,Hu'nan,412002)

机构地区：[1]中国航发南方工业有限公司,湖南412002 [2]中航动力株洲航空零部件制造有限公司,湖南412002

出　　处：《当代化工研究》2022年第9期75-77,共3页Modern Chemical Research

摘　　要：本文以套管防磨工具的橡胶衬套为研究对象,综合考虑橡胶大变形、套管-衬套-芯轴转动接触、温度场等因素,利用有限元软件分析了橡胶衬套的工作力学行为。分析时采用Mooney-Rivlin模型,模型参数通过“不同温度下橡胶的单轴拉压、双轴拉压、体积拉压实验数据”拟合获得。通过研究发现:在中深井地温条件下(90℃以下)橡胶衬套的工作应力随温度升高增加较快,而在深井地温条件下(90℃~150℃)橡胶衬套的工作应力随温度升高增加缓慢;无论在中深井地温还是在深井地温条件下,橡胶衬套应变随温度增加均上升缓慢;防磨工具芯轴顺时针转动时,由于摩擦和弹性作用,衬套作逆时针间歇碰撞公转,碰撞时应力峰值均集中在肋条根部或内圈润滑槽处,肋条间的本体区域应力幅值很小。本文的研究工作对于套管防磨橡胶衬套的结构设计与现场应用具有一定指导意义。Basing the rubber bushing of sleeve antifriction tool as research object,the rubber gross distortion、rolling contact among sleeve、bushing and mandrel and temperature field were considered roundly.The stress state of rubber bushing has been obtained by FEM analysis software.Mooney-Rivlin Model was used when analysing,and the material constants of rubber were obtained by experimental data of uniaxial tension-compression、biaxial tension-compression and volume tension-compression test.The results showed that the working stress of rubber bushing increased rapidly with the temperature rising in medium-deep wells(under 90℃),but the working stress of rubber bushing increased slowly with the temperature rising in deep wells(between 90℃and 150℃);however,the strain of rubber bushing all increased slowly with the temperature rising both in medium-deep wells and in deep wells.Because of friction and elasticity,the rubber bushing rotated counterclockwise with collision intermit-tently when the mandrel of antifriction tool rotated clockwise;the peak stress was concentrated at the root of rib or lubrication groove of inside track,yet the stress was small on the ontology.The research results can provide guiding for structural design and field application of sleeve antifriction rub-ber bushing.

关 键 词：橡胶 防磨套 非线性 接触分析 有限元法 

分 类 号：T[一般工业技术]