Random stress spectrum acquisition and fatigue residual life estimate for overhead travelling crane

doi:10.3901/JME.2012.18.192

CORC > 兰州理工大学 > 兰州理工大学

	Random stress spectrum acquisition and fatigue residual life estimate for overhead travelling crane
	Wang, Aihong 1,2; Xu, Gening 1; Gao, Youshan 1
刊名	Jixie Gongcheng Xuebao/Journal of Mechanical Engineering
	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.