文章基本信息

标题：Non-parametric load extrapolation based on load extension for semi-axle of wheel loader
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作者：Jixin Wang ; Yan Li ; Zhujin Jiang 等
期刊名称：Advances in Mechanical Engineering
印刷版ISSN：1687-8140
电子版ISSN：1687-8140
出版年度：2017
卷号：9
期号：3
DOI：10.1177/1687814017690073
语种：English
出版社：Sage Publications Ltd.
摘要：Load extrapolation is the paramount step in compiling load spectra of the mechanical components. To avoid the limitation of the stationary processes in parametric extrapolation methods, the non-parametric extrapolation method is widely investigated in recent years. However, the accuracy of kernel density estimation of the large load cycles in existing non-parametric methods should be still improved. Aiming at this issue, a non-parametric rain-flow extrapolation method based on load extension is presented. In this method, combining with non-parametric extrapolation model and Markov chain Monte Carlo method, the measured load–time histories for semi-axle in different operating sections are extended and extrapolated. The extrapolated load spectra curves and the relative damage ratio are compared with the results obtained by the existing rain-flow extrapolation methods. The results show that the proposed method can realize the reasonable extrapolation of load–time histories.
关键词：Non-parametric load extrapolation; load extension; load spectra; kernel density estimation; wheel loader