%0 Journal Article
%T INTERVAL ESTIMATION FOR STRUCTURAL FATIGUE LIFETIME
结构疲劳寿命的区间估计
%A Qiu Zhiping
%A Wang Xiaojun
%A
邱志平
%A 王晓军
%J 力学学报
%D 2005
%I
%X Fatigue lifetime of structure with uncertainties in material properties and external loading is estimated. Fatigue lifetime of structure, in general, is the function of these uncertain factors. Based on interval mathematics, modeling these uncertainties as interval numbers, a new method, which approximately estimates the fatigue lifetime with the help of first-order Taylor series, is presented. Interval analysis method overcomes the shortcoming that probabilistic analysis method needs a large number of prior statistical data, and it need less computational efforts than the latter. Typical numerical examples are used to illustrate that under small uncertain degree condition the interval analysis method can provide sufficient accuracy as probabilistic method for any kinds of lifetime functions, including linear or nonlinear.
%K fatigue lifetime estimation
%K uncertainty
%K interval analysis method
%K probabilistic analysis method
疲劳寿命估计
%K 不确定性
%K 区间分析方法
%K 概率分析方法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=4100DA4A1A3BA1B0CE5AD99AE1DFB420&aid=203DD653D7F05EBA&yid=2DD7160C83D0ACED&vid=42425781F0B1C26E&iid=94C357A881DFC066&sid=E4BEEBB9A80BC67E&eid=E934BC2766053B28&journal_id=0459-1879&journal_name=力学学报&referenced_num=4&reference_num=9