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

doi:10.3901/JME.2012.18.192

	Random stress spectrum acquisition and fatigue residual life estimate for overhead travelling crane
	Wang, Aihong 1,2; Xu, Gening 2; Gao, Youshan 2
	2012-09-20
发表期刊	Jixie Gongcheng Xuebao/Journal of Mechanical Engineering
ISSN	05776686
卷号	48 期号:18 页码:192-198
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.
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
DOI	10.3901/JME.2012.18.192
收录类别	EI
语种	中文
出版者	Editorial Office of Chinese Journal of Mechanical Engineering
EI入藏号	20124415622519
EI主题词	Fatigue of materials
EI分类号	691.2 Materials Handling Methods - 693.1 Cranes - 723.5 Computer Applications - 922.1 Probability Theory - 951 Materials Science
来源库	Compendex
分类代码	691.2 Materials Handling Methods - 693.1 Cranes - 723.5 Computer Applications - 922.1 Probability Theory - 951 Materials Science
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/111440
专题	兰州理工大学
作者单位	1.College of Mechanical Electronic Engineering, Lanzhou University of Technology, Lanzhou 730050, China; 2.College of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China
第一作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
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.