Analysis on Accelerated Stresses in Reliability Enhancement Testing of Hydraulic Cylinder Leakage
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摘要: 在分析现有可靠性强化试验加速应力选择不足的基础上,通过对液压缸故障物理的研究,由雷诺方程推导出液压缸活塞往复运动过程中液压油薄膜的厚度,得出其漏油量与载荷和液压油压力之间的关系;通过对比分析液压缸在有无缺陷下的漏油量,证明液压缸漏油可靠性强化试验中加速应力选择的正确性;以某加工中心端齿盘分度式数控转台中的升降液压缸为例进行分析,通过选择不同水平的加速应力进行对比试验,得出其结果和用故障物理法进行可靠性强化试验加速应力分析具有一致性。Abstract: Based on the analysis of insufficient selection of accelerated stresses in reliability enhancement testing, by examining the fault physics of hydraulic cylinders the hydraulic oil film thickness is deduced through Reynolds equation and the relationship between the oil leakage and hydraulic oil volume and pressure loads in hydraulic cylinder piston reciprocating motion process. The correctness is proved for the selection of acceleration stress in reliability enhancement test by comparing the oil leakage of hydraulic cylinder in the presence or absence of defects. The hydraulic cylinder of end toothed disc dividing type NC rotary is taken as the example and comparative tests are conducted with different stress levels, the results show the consistency with those obtained by analyzing fault physics of accelerated stresses in reliability enhancement testing.
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[1] 蒋培,陈循,张春华,等.可靠性强化试验技术综述[J].强度与环境,2003,30(1):58-64 Jiang P, Chen X, Zhang C H, et al. Reliability enhancement testing[J]. Structure & Environment Engineering, 2003,30(1):58-64 (in Chinese) [2] 陈循,张春华.加速试验技术的研究、应用与发展[J].机械工程学报,2009,45(8):130-136 Chen X, Zhang C H. Research, application and development of accelerated testing[J]. Journal of Mechanical Engineering, 2009,45(8):130-136 (in Chinese) [3] 温熙森,陈循,张春华,等.可靠性强化试验理论与应用[M].北京:科学出版社,2007 Wen X S, Chen X, Zhang C H, et al. Reliability enhancement testing theory and application[M]. Beijing: Beijing Science Press, 2007 (in Chinese) [4] Silverman M. Summary of HALT and HASS results at an accelerated reliability test center[C]//Proceedings of Annual Reliability and Maintainability Symposium. Anaheim, USA: IEEE, 1998:30-36 [5] Upadhyayula K, Dasgupta A. Guidelines for physics-of-failure based accelerated stress testing[C]//Proceedings of Annual Reliability and Maintainability Symposium. Anaheim, CA: IEEE, 1998:345-257 [6] 盐见弘.失效物理基础[M].北京:科学出版社,1982 Hiroshi S. Physical foundation of failure[M]. Beijing: Science Press, 1982 (in Chinese) [7] Yeo K P. Planning step-stress life-test with a target acceleration-factor[J]. IEEE Transactions on Reliability, 1999,48(1):61-67 [8] 周源泉,安维廉,朱新伟.论加速可靠性增长试验:步进应力试验方案的统计分析[J].推进技术,2003,24(5):393-396,413 Zhou Y Q, Zhu X W, Zhu X W. Research on accelerated reliability growth testing (Ⅶ)statistical analysis of step stress test schemes[J]. Journal of Propulsion Technology, 2003,24(5):393-396,413 (in Chinese) [9] 茆诗松,王玲玲. 加速寿命试验[M]. 北京:科学出版社,1997:2-26 Mao S S, Wang L L. Accelerated life testing[M]. Beijing: Science Press, 1997:2-26 (in Chinese) [10] 桑毅,隆萍,刘兴莉,等. 恒定应力加速寿命试验算法探讨[J]. 自动化与仪器仪表,2010,(6):116-117 Sang Y, Long P, Liu X L, et al. The discussion of algorithm for constant stress accelerated life testing[J]. Automation & Instrumentation, 2010,(6):116-117 (in Chinese) [11] 张根保,许智,何文辉,等.加工中心数控转台可靠性强化试验方法研究[J].中国机械工程,2011,22(8):948-951 Zhang G B, Xu Z, He W H, et al. Research on reliability enhancement testing method of NC rotary table[J]. China Mechanical Engineering, 2011,22(8):948-951 (in Chinese) [12] 张根保,涂林,许智,等.双工位数控转台可靠性试验技术及失效分析[J].机械科学与技术,2011,30(10):1737-1742 Zhang G B, Tu L, Xu Z, et al. Reliability test technique and failure analysis of double-post NC rotary table[J]. Mechanical Science and Technology for Aerospace Engineering, 2011,30(10):1737-1742 (in Chinese) [13] 陈文华,武海军,潘骏,等.小型潜水电泵可靠性强化试验方法的研究[J].中国机械工程,2008,19(13):1606-1609 Chen W H, Wu H J, Pan J, et al. Research on reliability enhancement testing method of small-sized submersible pumps[J]. China Mechanical Engineering, 2008,19(13):1606-1609 (in Chinese) [14] 海因茨K米勒,伯纳德S纳乌.流体密封技术-原理与应用[M].程传庆译.北京:机械工业出版社,2002 Miller H K, Chisinau B C. Fluid sealing technology-principles and applications[M]. Cheng C Q, Trans. Beijing: Mechanical Industry Press, 2002 (in Chinese) [15] 周志鸿,张康雷.工程机械液压缸活塞杆密封的进展[J].工程机械,2005,36(11):46-51 Zhou Z H, Zhang K L. Progress on the sealing of piston rods in hydraulic cylinders of construction machinery[J]. Construction Machinery and Equipment, 2005,36(11):46-51 (in Chinese) [16] 刘令勋,刘英贵.动态密封设计技术[M].北京:中国标准出版社,1993 Liu L X, Liu Y G. Dynamic seal design technology[M]. Beijing: Standards Press of China, 1993 (in Chinese)
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