2本科毕业论文（设计）论文题目：基于ANSYS的重轨淬火温度场和应力场仿真分析基于ANSYS的重轨淬火温度场和应力场仿真分析摘要本文以规格为50kg／m的重轨为研究对象，通过综合考虑材料热物性参数随温度的非线性变化、热传导及高压气体冷却等动态边界条件，运用ANSYS软件，采用有限单元法，建立了淬火重轨的瞬态温度场和应力场的三维模型。通过ANSYA软件仿真淬火重轨各个时间段的温度场。根据重轨温度场的变化规律，选择合理的喷风压强，最终得到理想的索氏体组织。在数值模拟计算的过程中，输入在不同的喷风压力下的对流换热系数，得到相应的温度场和应力场结果，并对结果进行了分析。计算了强制冷却、空气自然对流等淬火过程的温度场和应力场分布情况，分析淬火时间对温度场和应力场的影响。得到最佳的喷风冷却时压强，从而为实际生产制定合理的重轨淬火工艺提供了依据。关键词：重轨，淬火，温度场，应力场，ANSYSSimulationofquenchingtemperaturefieldandstressfieldforheavyrailbasedontheANSYSAbstractThespecificationof50kg／m—heavyrailwastakenasinvestigatedsubjectinthispaper．Inthismodel．theequivalentthermalcapacitymethodwasusedtodealwiththeinfluenceoflatentheatontemperaturefiledandthetransformationstresswhichresultedfromphasetransformationwastakenintoaccountusingtheequivalentlinearexpansioncoefficientmethod．Theimpactofmaterial’snon-1inearparameterontemperaturefieldwasconsidered．Theresultsshowthatthesimulationresultisidenticalwiththemeasuringtemperature．Accordingtothedistributionoftemperaturefield，thetimeofcompressedairshouldbecontrolled．Theidealsorbitecanbegained．Duringtheprocessofcalculatinginnumericalsimulation，inputtedtheconvectiveheattransfercoefficientunderdifferentwindpressurereceivedthecorrespondingresultoftemperaturefieldandstressfiled，andanalyzedtheresult．Thispaperanalyzedthatcalculatedheating，keepingwarm，forcecoolingandaircooling’stemperaturefieldandstressfileddistributioninsuchdifferentoperatingmodes．Getthebestheating,thermalinsulation,cooling,naturalairtimeandtheresultcanbeusedtoguidethequenchingprocessdesign．Keywords：Heavyrail，Quenching，Temperaturefield，Stressfiled，ANSYS目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc324974398"第一章绪论PAGEREF_Toc324974398\h1HYPERLINK\l"_Toc324974399"1.1课题研究意义PAGEREF_Toc324974399\h1HYPERLINK\l"_Toc324974400"1.2影响重轨淬火技术的主要因素PAGEREF_Toc324974400\h2HYPERLINK\l"_Toc324974401"1.3重轨淬火数值模拟的国内外研究现状PAGEREF_Toc324974401\h2HYPERLINK\l"_Toc324974402"1.4研究内容PAGEREF_Toc32497