| 微动工况下接触刚度测试 |
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| 引用本文： | 陈璐璐,马艳红,李迪,洪杰.微动工况下接触刚度测试[J].航空动力学报,2010,25(4):936-942. |
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| 作者姓名： | 陈璐璐 马艳红 李迪 洪杰 |
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| 作者单位： | 北京航空航天大学,能源与动力工程学院,北京,100191 |
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| 摘 要： | 设计了一套能够测量由于接触表面间小幅度的相对切向运动所导致的迟滞现象的试验装置,克服了无法将系统刚度与接触刚度分开的难题.利用该试验系统能够对不同初始正压力和激振力作用下接触表面间微幅相对运动的迟滞曲线进行测试,根据测试结果计算得到接触表面间的接触刚度.最后将试验结果与理论、数值计算结果进行对比,为最终建立一套可准确预估接触表面间接触刚度的数值模拟方法奠定基础.
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| 关 键 词： | 接触刚度 干摩擦阻尼 迟滞曲线 微动 |
| 收稿时间： | 4/2/2009 9:53:14 AM |
| 修稿时间： | 9/4/2009 2:55:41 PM |
Measurement of contact stiffness during microslip |
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| CHEN Lu-lu,MA Yan-hong,LI Di and HONG Jie.Measurement of contact stiffness during microslip[J].Journal of Aerospace Power,2010,25(4):936-942. |
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| Authors: | CHEN Lu-lu MA Yan-hong LI Di and HONG Jie |
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| Institution: | School of Jet Propulsion, Beijing University of Aeronautics Astronautics, Beijing 100191, China;School of Jet Propulsion, Beijing University of Aeronautics Astronautics, Beijing 100191, China;School of Jet Propulsion, Beijing University of Aeronautics Astronautics, Beijing 100191, China;School of Jet Propulsion, Beijing University of Aeronautics Astronautics, Beijing 100191, China |
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| Abstract: | A measurement system was designed to accurately determine contact stiffness between two surfaces of dry friction damper, which can separate system stiffness from that of the contact. The influences of exciting force and initial normal load are investigated in detail. The curve of the tangential contact stiffness for variable normal preload is obtained by fitting the results according to the given condition. This research can test and improve the calculation models, and it will make a foundation for establishing a practical method for the numerical simulation of contact stiffness. |
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| Keywords: | contact stiffness dry friction damping hysteresis cycle microslip |
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