摘要
随着基准谱、严重谱编制研究的深入,利用实测数据编制载荷谱在编谱方法和分散系数取值等方面需求愈发迫切。从正态概率分布理论出发,讨论影响疲劳寿命分散系数取值的主要因素;针对基准谱和严重谱之间的差异性,提出基准谱和严重谱的折算思路和方法,并通过实测数据编制的基准谱和严重谱折算系数进行比较分析。结果表明:采用本文方法可以实现基准谱与严重谱之间损伤分散系数的折算取值。
With the deep development of baseline spectrum or severe spectrum,it is necessary to use the measured data to develop the load spectrum in spectrum developing method and life scatter factor.Based on the normal distribution theory,the factors that affect the dispersion of fatigue life are discussed.For the difference between the baseline spectrum and the severe spectrum,the idea and method of the conversion between the baseline spectrum and severe spectrum is proposed.The comparative analysis of the spectrum conversion factor between the baseline spectrum and severe spectrum developed by measured data is performed.The results show that the method can realize the conversion value of dispersion conversion coefficient between baseline spectrum and severe spectrum.
作者
王创奇
孟新意
WANG Chuangqi;MENG Xinyi(Xi’an Aircraft Corporation Design Institute,AVIC Aircraft Co.,Ltd.,Xi’an 710089,China)
出处
《航空工程进展》
CSCD
2020年第3期394-399,共6页
Advances in Aeronautical Science and Engineering
关键词
疲劳寿命
分散系数
基准谱
严重谱
飞行实测数据
fatigue life
scatter factor
baseline spectrum
severe spectrum
flight measured data
作者简介
通信作者:王创奇(1972-),男,硕士,研究员级高级工程师。主要研究方向:飞机寿命可靠性与疲劳强度设计,E-mail:821856392@qq.com;孟新意(1973-),男,硕士,研究员级高级工程师。主要研究方向:飞机总体设计。
