45%SiCp/Al复合材料的微动磨损试验设计与验证  

Experiment Design and Verification of Fretting Wear of 45%SiCp/Al Composites

作　　者：陈立 李志慧 陈国钦[2] 夏振涛 彭效海 刘玉庆 邵红亮 CHEN Li;LI Zhi-hui;CHEN Guo-qin;XIA Zhen-tao;PENG Xiao-hai;LIU Yu-qing;SHAO Hong-liang(Shanghai Institute of Satellite Equipment,Shanghai 200240,China;Institute of Metal Matrix Composite Science and Engineering,Harbin Institute of Technology,Harbin 150080,China)

机构地区：[1]上海卫星装备研究所,上海200240 [2]哈尔滨工业大学金属复合材料与工程研究所,哈尔滨150080

出　　处：《宇航学报》2020年第12期1588-1593,共6页Journal of Astronautics

摘　　要：针对运载发射阶段卫星锁轴机构45%SiCp/Al复合材料与TC4材料之间可能存在的微动摩擦磨损与切向接触刚度问题,本文在调研和仿真分析的基础上,设计等效的扫频微动摩擦磨损试验系统。通过夹持力的标定保证最大影响因素接触应力的一致,采用扫频振动模拟摩擦副受载工况,并对45%SiCp/Al复合材料试件表面形貌进行振前振后检测。试验结果表明,45%SiCp/Al复合材料在较高的形状精度和表面粗糙度条件下,能够承受较大载荷的微动摩擦,摩擦副结合面具有良好的切向接触刚度。In order to verify the potential problem of fretting wear and tangential contact stiffness between 45%SiCp/Al composites and TC4 for a satellite locking mechanism during launch,an equivalent sweep-frequency fretting wear test system is designed based on investigation and simulation in this paper.To ensure the consistency of major factor-contact stress,the holding force is calibrated firstly;the load condition of friction pair is simulated by sweep vibration,and the surface measurement of 45%SiCp/Al test sample is carried out before and after vibration experiments.The experimental result shows 45%SiCp/Al can bear relatively large load fretting wear with higher shape precision and surface roughness,and the joint surface of friction pair has good tangential contact stiffness.

关 键 词：45%SiCp/Al 微动磨损 扫频 切向接触刚度 

分 类 号：TH11[机械工程—机械设计及理论]