往复运动下氟醚橡胶的摩擦特性  

Friction characteristics of fluoroether rubber under reciprocating motion

作　　者：陈江弥 富绪光 胡海波 CHEN Jiang-mi;FU Xu-guang;HU Hai-bo(Shanghai Branch,Xinxiang Aviation Industry Group Co Ltd,Shanghai 201201,China)

机构地区：[1]新乡航空工业集团有限公司上海分公司,上海201201

出　　处：《合成橡胶工业》2023年第5期398-402,共5页China Synthetic Rubber Industry

摘　　要：通过力学性能测试得到氟醚橡胶的应力-应变曲线,结合Ogden超弹本构模型,建立了氟醚橡胶动密封系统的二维轴对称模型,并采用Abaqus软件分析了不同压缩率下氟醚橡胶的Von Mises应力和接触应力的分布情况。结果表明,氟醚橡胶在装配后,接触应力分布呈抛物线由中心线向两端递减,且安装槽内侧接触应力始终大于安装槽外侧;橡胶上的Von Mises应力随着橡胶压缩率的增加而增大;氟醚橡胶密封面处的滑动摩擦因数是变化的,在较小压缩率和较大压缩率下均有减小趋势。The stress-strain curve of fluoroether rubber was obtained through mechanical performance testing,and a two-dimensional axisymmetric model of the fluoroether rubber dynamic sealing system was established using the Ogden hyperelastic constitutive model.The distribution of Von Mises stress and contact stress of fluoroether rubber under different compression ratios were analyzed by Abaqus software.The results showed that after assembly,the contact stress distribution of fluoroether rubber decreased in a parabolic shape from the centerline to both ends,and the contact stress of the inner side of the installation groove was always greater than that of outer side of the installation groove.The Von Mises stress on rubber increased with the increasing compression ratio.The sliding friction coefficient at the sealing surface of flurane rubber was variable and tended to decrease at both small and large compression ratios.

关 键 词：氟醚橡胶 往复运动 接触应力 摩擦特性 滑动摩擦力 有效滑动摩擦因数 

分 类 号：TQ333.93[化学工程—橡胶工业]