| 摘要: |
| 紧固件是航天型号中应用最广泛、使用量最大的基础产品，其连接设计技术直接影响航天型号可靠性。咬死是航天紧固件中最常发生的失效模式，一旦咬死，将对火箭装配流程乃至发射任务产生严重不利影响。基于螺纹副表界面热力学分析、不同摩擦系数下的仿真分析、不同匹配状态下的摩擦磨损试验、磨损试验后的表界面观测与化学分析等方法，系统研究引起航天紧固件咬死的主要因素，深入分析其影响规律并总结作用机理，为改善咬死现象从而提高航天型号的紧固连接可靠性提供理论依据与技术支撑。 |
| 关键词: 多维分析方法 紧固件 咬死 机理 |
| DOI： |
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| 基金项目:国家自然科学基金青年科学基金项目（52405172） |
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| Research on the Mechanism of Aerospace Fasteners Seizure Based on Multidimensional Analysis Methods |
| WANG Jie,XU Jianchao,YAN Lu,LI Ying,LIU Yating |
| (Beijing Institute of Astronautical Systems Engineering, Beijing 100076, China;Oriental Bluesky Titanium Technology Co.Ltd., Yantai 264003, China;Beijing University of Technology, Beijing 100124, China;Beijing ShouHang Science and Technology Development, Beijing 100076, China) |
| Abstract: |
| Fasteners are the most widely used basic products in aerospace models, the connecting designing technology of which could affect the reliability of aerospace models. Seizure is the most common failure mode of aerospace fasteners, once seizure, the rocket assemble process and even the launch mission will be severely adversely affected. Based on the surface and interface thermodynamic analysis of screw pairs, simulation analysis under different friction coefficients, friction and wear tests under different matching states, observation and chemical analysis of surface and interface after wear experiment and so on, the main factors causing aerospace fasteners seizure will be investigated. Meanwhile, the impact pattern could be deeply analyzed and the mechanism could be systematically summarized. The research results of this article aim to improve the seizure phenomenon and enhance the reliability of fastening connecting in aerospace models, thus, required theoretical basis and technical support will be provided. |
| Key words: Multidimensional analysis methods Fasteners Seizure Mechanism |