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Reliability analysis of diesel engine crankshaft based on 2D stress strength interference model
引用本文:周迅,俞小莉. Reliability analysis of diesel engine crankshaft based on 2D stress strength interference model[J]. 浙江大学学报(A卷英文版), 2006, 7(3): 391-397. DOI: 10.1631/jzus.2006.A0391
作者姓名:周迅  俞小莉
作者单位:School of Mechanical and Energy Engineering Zhejiang University Hangzhou 310027 China,School of Mechanical and Energy Engineering Zhejiang University Hangzhou 310027 China
摘    要:INTRODUCTION For critical structures and applications, requiring a given reliability, it is necessary to account for un-certainties and variability in material properties, loads and geometric tolerances. Using various reliability analysis methods, we can determine the reliability of existing structures or systems; or design new structures or systems with certain desired reliability. Manufacturing processes may involve many factors that have inherent uncertainties or random variations in th…

关 键 词:柴油机 机轴 失效可靠性 二维干涉模型 负载不对称率 疲劳判据
收稿时间:2005-03-24
修稿时间:2005-11-19

Reliability analysis of diesel engine crankshaft based on 2D stress strength interference model
Xun Zhou,Xiao-li Yu. Reliability analysis of diesel engine crankshaft based on 2D stress strength interference model[J]. Journal of Zhejiang University Science, 2006, 7(3): 391-397. DOI: 10.1631/jzus.2006.A0391
Authors:Xun Zhou  Xiao-li Yu
Affiliation:(1) School of Mechanical and Energy Engineering, Zhejiang University, Hangzhou, 310027, China
Abstract:A 2D stress strength interference model (2D-SSIM) considering that the fatigue reliability of engineering structural components has close relationship to load asymmetric ratio and its variability to some extent is put forward. The principle, geo-metric schematic and limit state equation of this model are presented. Reliability evaluation for a kind of diesel engine crankshaft was made based on this theory, in which multi-axial loading fatigue criteria was employed. Because more important factors, i.e. stress asymmetric ratio and its variability, are considered, it theoretically can make more accurate evaluation for structural com-ponent reliability than the traditional interference model. Correspondingly, a Monte-Carlo Method simulation solution is also given. The computation suggests that this model can yield satisfactory reliability evaluation.
Keywords:Fatigue reliability   2-dimensional interference model (2D-SSIM)   Monte-Carlo Method   Load asymmetric ratio   Multi-axial fatigue criteria
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