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45%SiC_p/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% SiC_p/Al Composites

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【作者】 陈立李志慧陈国钦夏振涛彭效海刘玉庆邵红亮

【Author】 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;Institute of Metal Matrix Composite Science and Engineering, Harbin Institute of Technology;

【机构】 上海卫星装备研究所哈尔滨工业大学金属复合材料与工程研究所

【摘要】 针对运载发射阶段卫星锁轴机构45%SiC_p/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%SiC_p/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%SiC_p/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。

【Abstract】 In order to verify the potential problem of fretting wear and tangential contact stiffness between 45%SiC_p/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%SiC_p/Al test sample is carried out before and after vibration experiments. The experimental result shows 45%SiC_p/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.

  • 【文献出处】 宇航学报 ,Journal of Astronautics , 编辑部邮箱 ,2020年12期
  • 【分类号】TB333
  • 【被引频次】1
  • 【下载频次】165
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