航空工程进展
航空工程進展
항공공정진전
ADVANCES IN AERONAUTICAL SCIENCE AND ENGINEERING
2012年
2期
235-240
,共6页
区间应力一强度干涉模型%区间分析%区间变量%结构区间可靠性
區間應力一彊度榦涉模型%區間分析%區間變量%結構區間可靠性
구간응력일강도간섭모형%구간분석%구간변량%결구구간가고성
interval stress strength interference model%interval analysis%interval variables%structural reliability
为了分析考虑不确定性因素影响下的结构可靠性,基于不确定性参数的区间描述,用度的方法对结构区间可靠性进行分析。用区间数描述影响结构功能的不确定性,建立结构可靠性分析的区间应力一强度干涉模型,将这些区间变量引入到结构区间可靠性的分析中。基于区间数学以及区间数比较方法理论,提出了一种新的区间可靠性指标。运用基于度的结构区间可靠性分析方法进行计算,分析结果表明该方法具有良好的数学性质,计算得出的结果与用非概率可靠性计算结果相一致,表明该方法可以对结构安全或可靠的程度做出合理的估计。
為瞭分析攷慮不確定性因素影響下的結構可靠性,基于不確定性參數的區間描述,用度的方法對結構區間可靠性進行分析。用區間數描述影響結構功能的不確定性,建立結構可靠性分析的區間應力一彊度榦涉模型,將這些區間變量引入到結構區間可靠性的分析中。基于區間數學以及區間數比較方法理論,提齣瞭一種新的區間可靠性指標。運用基于度的結構區間可靠性分析方法進行計算,分析結果錶明該方法具有良好的數學性質,計算得齣的結果與用非概率可靠性計算結果相一緻,錶明該方法可以對結構安全或可靠的程度做齣閤理的估計。
위료분석고필불학정성인소영향하적결구가고성,기우불학정성삼수적구간묘술,용도적방법대결구구간가고성진행분석。용구간수묘술영향결구공능적불학정성,건립결구가고성분석적구간응력일강도간섭모형,장저사구간변량인입도결구구간가고성적분석중。기우구간수학이급구간수비교방법이론,제출료일충신적구간가고성지표。운용기우도적결구구간가고성분석방법진행계산,분석결과표명해방법구유량호적수학성질,계산득출적결과여용비개솔가고성계산결과상일치,표명해방법가이대결구안전혹가고적정도주출합리적고계。
In order to analyze the structural reliability considering the effect of uncertainty factors, based on the interval descriptions of the uncertain parameters, by using the method of degree the structural interval reliability is analyzed. Using interval numbers to describe the uncertainty which affect the structural function, and establish the interval stress-interval strength interference model of structural reliability analysis, the interval variabili- ty will be introduced to the interval reliability analysis. Based on interval mathematics and the theory of the in- terval comparative method, a new interval reliability index is proposed, and the calculation by using the interval structural reliability analysis based on degree method is carried out in this paper. Analytical results show that the method is of good mathematical quality. The calculated results are consistent with that by using the nonprobabilistic reliability calculation. It shows that this method can make reasonable estimation on the degree of structure safety and reliability.