XXXX箱体有限元强度计算

XXXX箱体强度计算报告1建立有限元模型1.1三维模型的建立1所示。在ANSYSWorkbench中建立单个箱体的三维模型。其中为了计算方便，忽略螺栓、支撑板以及板材上的孔等结构；忽略各个模型的倒角、倒圆、拼接扣等不必要的结构。模型如图1所示。右tom&try2015/7/2215:42箱体的力学计算模型1.2模型的力学性能参数设置箱体的覆盖件板材为铝合金，支撑板为铸铝，其力学性能参数如图2所示。Properti&sofoutirteRow3：AluininumAfcyABcDE1PropertyValueUnit2侶Density2,77E-06kgmrnA^303■琥IsotropicSecantCoefficientofThermalExpanaon斗S诃CoefficientofThermalExpansion23E-05CA4□詞ReTeferceTemperature22C□&l诃.isotropicEfesDclty□7D&rlvtfromYoungsModuLLJJ8Young'sModubs71000MPa□910Poisson'sRate033HeukModulus69606MPan111213ShearModulus26692MPa□h侶Atern日ongStressR-Ratc_JTabufer□InterpolationSembLog jJ14scaleL□15offset0MPa□160TensieYieldStrength2S0MP0H□17"0CompressiveYieldStrength260MP耳0HLiL诃TensieUKrnatieStrength310MPa(□□明CompressiveUltirnateStrength0MPa□門

PropertiesofQuUneRow6：zlABCDE1PropertyvalueUnit21Den^ty2J8E-0&kjgmmiA-3□3a诃IsotropicElastidty4DerivefromYoung'sModulr.二15Young'sModulus71000MPa6Posson'sRatio0.31□7BukHodjkjs62201MPa□8shearMtxiukjs27妙MPa□勺诃TensleYieldstrength250MPa□□10诃Compr&ssiveYieldStrength250MPa0□11STensieultimatestrength460MPa0□图2铝合金、铸铝的材料力学性能1.3模型的网格划分板材覆盖件设置为计算精度较高的结构化网格，而支撑件设置为有利于计

算结果收敛的非结构化网格。控制网格划分的相关度： Relevance=10Q控制网格尺寸大小为：Sizing=50mm。网格划分结果如图3所示，其中网格的节点数为:139874，单元数为：67670。250,00 750.00StatisticsNodes139874Elements67670MeshMetricNone图3网格划分结果1.3约束与载荷根据技术协议对箱体结构要求：允许承受的均匀载荷为每延米1000N，在此载荷作用下不得产生塑性变形，箱体允许的最大集中载荷为 850N（作用于最大跨度的对称中心处），最大相对挠度（跨度中心相对于箱体面挠度之差）不大于

5mm。由于支撑件固定于车厢的侧壁上，所以设置支撑件的固定孔为固定约束。箱体的上方由四个点固定于车厢的上壁，所以设置该位置Z轴的位移为0。箱体的载物面的面积约为1平方米，根据技术要求，设置该面上的均布力为1000N，如图4所示。B;StaticStmcUiralStaticStrucHiralTime：1.$2015/7/2215:^3遇FixedSupport■Force;1000.N卫遇FixedSupport■Force;1000.N卫Displacement0.00500.001000.00(mm)750.00Z图4箱体受均布载荷示意图750.00Z同样根据技术要求,设置在支撑件中间的位置（跨距中心）设置集中载荷为03500.001000.00(mm)Z250.0003500.001000.00(mm)Z250.00850N，其余约束同上，如图5所示A;5UtiGStructuralStaticStructuralTime;1.s2015/7/2216:25AJFixedSupportBJDisplacementC]Forcer850.N750,00图5箱体受集中载荷示意图2计算结果分析2.1箱体承受均布载荷如图6、7为箱体整体变形与应力云图BeStaticStmctural0.00500.00 1000.00(mm)IBeStaticStmctural0.00500.00 1000.00(mm)IZTotalDeformationType:TotalDeformationUnitmmTime:12015/7/2215b440.14755Max0.131160.114760.0983670.0619730.0655780.04918-10.0327890.016395OMin250.00750.001000.00(mm)250,00750,00500.0CIluOO^uO(mm)250.00750,001000.00(mm)250,00750,00500.0CIluOO^uO(mm)250.00750,00图6箱体变形云图B;StaticStructuralEquivalentStressType;Equivalent(von-Mise^Unit:MPaTime:12015/7/2215:^45475Max4.86674.2584 I3.65 I3.04172.43341.B251.21670.608345.2916*-9Min图7箱体应力云图如图&9所示，为侧面支撑件的变形与应力云图StaticStructuralTotalDeformatfon2Type:TotalDeformationUrirtunmTime：12015/7/2215:^50J021419Max0.0190390.01^6590.0142790.01LS990.0095194a007139S0,0047597010023西9QMin图8侧面支撑件的变形云图B:StaticStructuralEquivalentStress2Type：EquivalentUnit:MPaTime:12015/7/2215:4653710Max<77524.17863.5822-.9B54238831J921L19550.598930.0023156Min0.00125.00250.00500.00(mm)375»00图9侧面支撑件的应力云图B:StaticStructuralEquivalentStress2Type：EquivalentUnit:MPaTime:12015/7/2215:4653710Max<77524.17863.5822-.9B54238831J921L19550.598930.0023156Min0.00125.00250.00500.00(mm)375»00图9侧面支撑件的应力云图如图10、11所示，为中间支撑件的变形与应力云图B:StartleStructuralTotalDeformation3Typm：TotalReformationUnit:mmTime:12015/7/2215^80.147SSMax0A31170JW8do聘420,0820420,0656650lO492E80.0329110.0165340^001567Min100.00 300.00图10中间支撑件的变形云图B:StaticStructuralEquivalentStress3 ( jiType;Equivalemt(von■何肉亡勺StressUnitMPaTime:12015/7/2215:47 /3B91QSMax3.4753,04152.6072.17251.7381.30350.868990.,43^55.2916«-9Min100.00 300,00500.00 1000.00(mm)iOjOO250.00750.00Z0.001000.00(mm)soo.oo750.00Z500,001000,W(mm)251X00750.00Z500.00 1000.00(mm)iOjOO250.00750.00Z0.001000.00(mm)soo.oo750.00Z500,001000,W(mm)251X00750.00Z图11中间支撑件的应力云图2.2箱体承受集中载何A:StaticStructuralTotalDeformationType:TotalDeformationUnit;mnTime:12015/7/2216:26B0.20^40.1S12S0.15362-I013596S0.11330U09C5420U0579820u045321010226610Min图12箱体变形云图AiStalkStructuralEquFv5lents(ressTypt?:Equivalent(von-Mise_nit：MPa jTime:12015/7/2216:27S3793Max7A4876,5175558654,65543,7344Z79331.S622i.75S^-aMm250.00图13箱体应力云图A:StaticStructuralTotalDeformation2Type;TotalDefomnatfonUnit:mmTime:12015/7/2216:27.0.D3006SMa^cI0X2672-1一0.02333^1-|O.O2&M30.0157030.013362-I0.010022.0,006681I0.0033405」0Min图14侧面支撑件的变形云图A:StaticStructuralEquifvalentStress2Type:EquivalentOfan-Mises)StressUnitMPsTime:12015/7/2216:287-3092Max6.49745.68564.S7384.06213.25032.43351.62670.814930J031493Min100.00 300.00图15侧面支撑件的应力云图2DO.OO100-00^100.00(mm)300,002DO.OO100-00^100.00(mm)300,00A:StaticStmcUiralTotalDeform^tfon3.Type:TotalDeformationUnitmrriTime：12015/7/2216:290.11^33Max0.106130.092^070„07968^0.0664620,053240.0400170,0267950.0135720.000350Q3Min图16中间支撑件的变形云图D.00 200.00 400.00(mm)|D.00 200.00 400.00(mm)|A；5taticStiructiillRilEquivalentStress3 斗Type:Equivalent(voraWise?)StressUnitMPaTime:12015/7/2216^293J22Max2.864Z5O62.1481791,4521.0740.7159903581.75Mm100.00 300.W图17中间支撑件的应力云图2.3分析经以上计算，得出以下结果图表1所示表1箱体强度分析计算结果箱体强度分析均布载何集中载荷整体变形0.14755mm0.20394mm整体应力5.475MPa8.3798MPa侧面支撑件变形0.021419mm0.030065mm侧面支撑件应力5.3718MPa7.3092MPa中间支撑件变形0.14755mm0.11935mm中间支撑件应力3.9105MPa3.2