低溫服役條件下高速動(dòng)車組車輪沖擊疲勞壽命研究的開題報(bào)告開題報(bào)告題目：低溫服役條件下高速動(dòng)車組車輪沖擊疲勞壽命研究摘要：隨著中國(guó)高速鐵路的快速發(fā)展，高速動(dòng)車組的列車運(yùn)行速度逐漸提高，對(duì)車輪的性能、壽命等方面也提出更高的要求。然而，在低溫環(huán)境下，高速動(dòng)車組車輪的壽命受到了很大的挑戰(zhàn)，由此，本文旨在研究低溫環(huán)境下高速動(dòng)車組車輪沖擊疲勞壽命，并通過數(shù)值模擬得出低溫下高速動(dòng)車組車輪壽命的影響因素與規(guī)律。論文結(jié)構(gòu)：第一章：緒論1.1研究背景1.2國(guó)內(nèi)外研究現(xiàn)狀分析1.3研究意義和目的第二章：車輪疲勞壽命研究2.1車輪的材料、結(jié)構(gòu)及工藝2.2車輪疲勞壽命的評(píng)估方法2.3車輪疲勞壽命的影響因素第三章：低溫環(huán)境下車輪受力分析3.1溫度的影響3.2沖擊載荷的影響3.3原理分析及模型建立第四章：沖擊疲勞壽命數(shù)值模擬與分析4.1模型建立4.2低溫影響參數(shù)分析4.3分析結(jié)論第五章：低溫下車輪壽命實(shí)驗(yàn)驗(yàn)證5.1實(shí)驗(yàn)設(shè)計(jì)5.2實(shí)驗(yàn)結(jié)果和分析第六章：結(jié)論與展望6.1主要研究成果6.2不足之處6.3未來展望附錄參考文獻(xiàn)關(guān)鍵詞：高速動(dòng)車組；車輪；疲勞壽命；低溫；沖擊載荷；數(shù)值模擬；實(shí)驗(yàn)驗(yàn)證Abstract:WiththerapiddevelopmentofChinesehighspeedrailway,theoperatingspeedofhighspeedtrainhasbeenincreasing,leadingtohigherrequirementsofwheelperformanceandservicelife.However,theservicelifeofhighspeedtrainwheelisgreatlychallengedinlowtemperatureenvironment.Therefore,thispaperaimstostudytheimpactfatiguelifeofhigh-speedtrainwheelunderlowtemperatureenvironment,andusenumericalsimulationtoanalyzetheinfluentialfactorsandlawsoftheservicelifeofhigh-speedtrainwheelsunderlowtemperaturecondition.Structure:Chapter1:Introduction1.1Background1.2Domesticandforeignresearchstatusanalysis1.3ResearchsignificanceandpurposeChapter2:StudyonWheelFatigueLife2.1Material,structureandtechnologyofwheel2.2Evaluationmethodsforwheelfatiguelife2.3InfluentialfactorsforwheelfatiguelifeChapter3:Stressanalysisofwheelunderlow-temperatureenvironment3.1Influenceoftemperature3.2Influenceofimpactload3.3PrincipleanalysisandmodelestablishmentChapter4:Numericalsimulationandanalysisofimpactfatiguelifeunderlowtemperature4.1Modelestablishment4.2Analysisofinfluentialparametersunderlowtemperaturecondition4.3ConclusionofanalysisChapter5:Experimentalverificationofwheelservicelifeunderlowtemperature5.1Experimentaldesign5.2ExperimentalresultsandanalysisChapter6:Conclusionandoutlook6.1Mainresearchachievements6.2Insufficientpoints6.3FutureresearchoutlookAppendixReferencesKeywords:high-spe