基于SSI模型的加速应力试验定量评估方法

李晓阳; 姜同敏

基于SSI模型的加速应力试验定量评估方法

北京航空航天大学工程系统工程系, 北京 100191

基金项目: "十一五"预研项目(51319030301)

详细信息

作者简介:
李晓阳(1980-),女,贵州贵阳人,讲师,leexy@buaa.edu.cn.

中图分类号: TB 114.3
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- 被引次数: 0
出版历程
- 收稿日期: 2007-10-17
- 网络出版日期: 2008-11-30

Quantitative evaluation of accelerated stress testing based on SSI

Dept. of System Engineering of Engineering Technology, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 为了解决传统应力-强度干涉模型(SSI,Stress-Strength Interference)不能对加速应力试验(AST,Accelerated Stress Testing)进行可靠性指标随时间变化的定量评估问题,针对应力和强度均引入了随机过程进行描述.首先假设了产品强度退化过程和应力变化分别为漂移布朗运动和对称布朗运动.其次,为了解决Basu的布朗运动SSI模型在零时刻可靠度为1的问题,从工程角度,假设产品设计制造过程与试验或使用过程相互独立,提出了产品可靠性是设计生产决定的固有可靠性以及试验使用过程确定的使用可靠性的串联结果.通过将传统应力强度干涉模型结合Basu的布朗运动SSI模型,建立了与时间相关的应力强度干涉模型IMSDⅠ,并给出了相关评估方法.基于将加速应力试验与加速退化试验相结合,改进了已有的AST试验方法,扩大了试验数据量,最后,通过仿真算例验证了本文模型和评估方法的理论正确性和工程可实施性.
- 可靠性 /
- 寿命 /
- 退化 /
- 布朗运动 /
- 应力-强度干涉模型 /
- 加速试验
Abstract: In conducting accelerated stress testing (AST), to quantitatively evaluate reliability with respect to time by use of stress-strength interference (SSI) model, stochastic processes were introduced to describe stress and strength. Firstly,It was assumed that strength degradation and stress variation is drift and symmetric Brownian motion, respectively. Brownian motion SSI established by Basu involved reliability equals 1 when time equals zero. To overcome this problem, from engineering view, reliability of product was regarded as the result, which inherence reliability determined by design and manufacturing is in series with operation reliability decided by experiments and operation. Based on the traditional SSI and Basu-s model, time-dependent interference model of strength degradationⅠ (IMSDⅠ) was derived. With the combination of AST and accelerated degradation testing(ADT), data collection method in AST was improved. Finally, simulation example verified the correctness and applicability of the methodology proposed.
- reliability /
- life /
- degradation /
- Brownian motion /
- stress-strength inference model /
- accelerated testing

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参考文献(1)

[1] 曾生奎,赵廷弟,张建国,等.系统可靠性设计与分析[M].北京:北京航空航天大学出版社, 2001: 198-202 Zeng Shengkui,Zhao Tingdi,Zhang Jianguo, et al. System reliability design and analysis[M]. Beijing: Beijing University of Aeronautics and Astronautics Press, 2001:198-202(in Chinese) [2] Chan H Anthony,Englert Paul J.Accelerated stress testing handbook, guide of achieving quality products [M]. New York: IEEE Press, 2001:11-19 [3] 姚军,曹心宽,姜同敏.可靠性强化试验定量评估方法[J].北京航空航天大学学报, 2006, 32(1):117-120 Yao Jun, Cao Xinkuan, Jiang Tongmin.Quantitative assessment approach of RET based on interference mode[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(1):117-120(in Chinese) [4] Samuel Kotz, Yan Lumelskii, Marianna Pensky. The stress-strength model and its generalizations [M]. :World Scientific, 2003: 195-197 [5] Wei Huang. Reliability analysis considering product performance degradation . Arizona: Department of System & Industrial Engeneering, the University of Arizona, 2002 [6] Huang Wei, Askin Ronald G. A generalized SSI reliability model considering stochastic loading and strength aging degradation [J].IEEE Transactions On Reliability, 2004,53(1):77-82 [7] Chiodo Elio,Mazzanti Giovanni. New models for reliability evaluation of power system components subjected to transient over voltages IEEE Power Engineering Society General Meeting, PES. Piscataway: Institute of Electrical and Electronics Engineers Computer Society, 2006: 1709028 [8] 赵建印,孙权,周经伦.周期性随机应力强度退化下的SSI可靠性模型研究[J].应用科学学报, 2006, 24(5):529-532 Zhao Jianyin, Sun Quan, Zhou Jinglun. Stress-strength interference reliability analysis considering cyclic stochastic stress and strength aging degradation[J]. Journal of Applied Sciences, 2006, 24(5):529-532(in Chinese) [9] 孙权,赵建印,周经伦.复合应力作用下强度退化的应力-强度干涉模型可靠性统计分析[J].计算力学学报, 2007, 24(3):358-361 Sun Quan, Zhao Jianyin, Zhou Jinglun. Stress-strength interference reliability analysis considering stochastic multi-stress and strength aging degradation[J]. Chinese Journal of Computational Mechanics, 2007, 24(3): 258-361(in Chinese) [10] 李晓阳,姜同敏.基于加速退化模型的卫星组件寿命与可靠性评估方法[J].航空学报,2007,28(增刊):S100-S103 Li Xiaoyang, Jiang Tongmin. Constant-stress accelerated degradation testing of satellite assemblies[J]. Acta Aeronautica et Astronautica Sinica, 2007,28(Sup):S100-S103(in Chinese)

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