本文選題：蠕變-疲勞 + 缺口效應(yīng)�。� 參考：《機(jī)械工程學(xué)報(bào)》2015年24期

【摘要】：隨著能源短缺問題的不斷突出,高參數(shù)(高溫、高壓等)裝備的研發(fā)成為工業(yè)節(jié)能降耗的重要手段,如超超臨界汽輪機(jī)、航空發(fā)動(dòng)機(jī)等高端裝備。工程實(shí)際中,高參數(shù)裝備的失效多源于缺口等局部不連續(xù)部位,其在蠕變-疲勞等復(fù)雜載荷下的強(qiáng)度分析和設(shè)計(jì)是當(dāng)前研究的熱點(diǎn)與難點(diǎn)。系統(tǒng)回顧了蠕變-疲勞載荷下含缺口構(gòu)件的試驗(yàn)、本構(gòu)模型、壽命預(yù)測(cè)、數(shù)值分析及考核準(zhǔn)則方面的研究進(jìn)展,主要包括:蠕變-疲勞載荷下的新本構(gòu)關(guān)系及應(yīng)用;高溫強(qiáng)度和壽命分析的新模型及新方法;簡(jiǎn)化模型試驗(yàn)方法及蠕變-疲勞強(qiáng)度考核準(zhǔn)則�？偨Y(jié)這一領(lǐng)域的熱點(diǎn)和研究展望,可為高參數(shù)裝備在蠕變-疲勞等復(fù)雜載荷下的強(qiáng)度分析與設(shè)計(jì)提供一定技術(shù)支持與借鑒。
[Abstract]:With the increasing shortage of energy, the research and development of high-parameter (high-temperature, high-pressure) equipment has become an important means of industrial energy saving and consumption reduction, such as ultra-supercritical steam turbine, aeroengine and other high-end equipment. In engineering practice, the failure of high-parameter equipment is mostly due to local discontinuities such as notches. The strength analysis and design of high-parameter equipment under complex loadings such as creep-fatigue is a hot and difficult research topic at present. In this paper, the research progress in the tests, constitutive models, life prediction, numerical analysis and assessment criteria of notched members under creep-fatigue loading is reviewed systematically, including: the new constitutive relation under creep-fatigue load and its application; New model and new method of high temperature strength and life analysis, simplified model test method and creep-fatigue strength test criterion. The hot spot and research prospect in this field can provide some technical support and reference for strength analysis and design of high parameter equipment under complex loadings such as creep-fatigue.
【作者單位】： 華東理工大學(xué)機(jī)械與動(dòng)力工程學(xué)院;華東理工大學(xué)承壓系統(tǒng)與安全教育部重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51325504,51475167)
【分類號(hào)】：TG115.57

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