Random stress spectrum acquisition and fatigue residual life estimate for overhead travelling crane | |
Wang, Aihong1,2; Xu, Gening1; Gao, Youshan1 | |
刊名 | Jixie Gongcheng Xuebao/Journal of Mechanical Engineering
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2012-09-20 | |
卷号 | 48期号:18页码:192-198 |
关键词 | Computer simulation Cranes Probability distributions Unloading Combination strategies Fatigue residual lives Latin hypercube sampling Probability distribution model Rainflow counting Remaining fatigue life Stress spectrum Unloading positions |
ISSN号 | 05776686 |
DOI | 10.3901/JME.2012.18.192 |
英文摘要 | It is necessary to obtain the stress spectrum of structural fatigue accounting point in order to estimate the fatigue residual life of metal structure of overhead travelling crane and ensure crane safety. The characteristic parameters of stress spectrum are lifting weight, lifting position, unloading position and whether through the midpoint of span. The probability distribution model of the characteristic parameters is built with the data by collected characteristic parameters on the spot and statistical tested. Random samples of the characteristic parameters are produced with the Latin hypercube sampling (LHS). Stress-time history of the fatigue accounting point is calculated by dynamic simulation model and double parameter stress spectrum is obtained by rain flow counting model. Fatigue residual life is estimated by Forman formula. Prototype simulated with the above method, the 10 levels stress spectrum is obtained in detection period, and the fatigue residual life is estimated as 32.8 years. The error of remaining fatigue life is 6.26% between in simulation stress spectrum and test stress spectrum. It is feasible that test stress spectrum were replaced by simulation stress spectrum for the remaining fatigue life assessment. The method has the merit of short cycle, low cost based on the combination strategy of "testing, statistics, sample and contrast" for load spectrum acquisition for overhead travelling crane and the remaining fatigue life assessment. |
语种 | 中文 |
出版者 | Editorial Office of Chinese Journal of Mechanical Engineering |
内容类型 | 期刊论文 |
源URL | [http://ir.lut.edu.cn/handle/2XXMBERH/111440] ![]() |
专题 | 兰州理工大学 |
作者单位 | 1.College of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China 2.College of Mechanical Electronic Engineering, Lanzhou University of Technology, Lanzhou 730050, China; |
推荐引用方式 GB/T 7714 | Wang, Aihong,Xu, Gening,Gao, Youshan. Random stress spectrum acquisition and fatigue residual life estimate for overhead travelling crane[J]. Jixie Gongcheng Xuebao/Journal of Mechanical Engineering,2012,48(18):192-198. |
APA | Wang, Aihong,Xu, Gening,&Gao, Youshan.(2012).Random stress spectrum acquisition and fatigue residual life estimate for overhead travelling crane.Jixie Gongcheng Xuebao/Journal of Mechanical Engineering,48(18),192-198. |
MLA | Wang, Aihong,et al."Random stress spectrum acquisition and fatigue residual life estimate for overhead travelling crane".Jixie Gongcheng Xuebao/Journal of Mechanical Engineering 48.18(2012):192-198. |
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