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,1220. 北京科技大学学报 第32卷 表6计算工况 Struct2004,41(16h7):4279 Table 6 Cakulation condition m [3]Kim SE ThaiH T Lee J H.Bucklng analysis of plates using Ci +Ca Ca /Ca D the two variable refned plate theory Thin Walled Stmuct 2009, 47(4).455 1.5 1.5 600 700750.800850900 [4]RahaiA R.A linia MM.KazomiS Buckling analysis of stepped 变形越不容易发生,并且,带钢产生塑性变形需要 plates using modified buck ling mode shape Thin Walkd Stmuct 200846(5):484 施加的张应力载荷均低于张应力水平6.8MPa带 [5]Kaseda Y.Contmol of famess defeets and warp n processing 钢将产生一定程度的塑性变形.通过比较横向压应 plant CAMP-S019925(5):1463 力最大值和带钢产生塑性变形时需要的最小张应力 [6]Kaseda Y.Contiol of buckling and emossbow in strip processing 载荷值,可以看出,在以上这些双锥度辊形状参数 lines Iron SteelEng 1994.9(9):14 中,平直段直径对带钢瓢曲变形的影响最小. [7]Matoba T Effect of roll crown on heat buck ling and strip walk n continuous annealing lines CAMP-SI 1992 5(5):1459 3结论 [8]Matoba T Ataka M.Aoki I et al Effect of moll crown on heat buck ling in continuous annealng and processing lines Tetsu-to- (1)模拟了双锥度辊带钢应力应变分布情况, Hagane1994,80(8).61 在双锥度辊锥肩处,带钢张应力和横向应力发生突 [9]SasakiT.Control of strip buckling and snak ng n contnuous an 变,横向压应力和塑性变形都具有最大值,可以推断 nealng fiumace Kawasaki Stcel Tech Rep 1984(9):36 [10]Jacques N.Elias A.PotierFerry M.et al Buckling and wrnk- 此处带钢最先发生瓢曲变形,这与现场观测的带钢 ling durng strip convey in pmocessing lines JMater P mocessTech- 发生瓢曲变形的位置完全吻合, nol2007,190(13):33 (2)双锥度辊总锥度和锥度比越大以及平直段 [11]HuG H.Control of themal crown in the roller insie the contn- 长度和直径越小,带钢越容易在锥肩处发生屈曲变 uous annealing fiumace Baosteel Tech Res 2009 3(1):51 形和塑性变形,即带钢越容易发生瓢曲变形 [12]Dai J B Zhang Q D.ChangTZ FEM analysis of large themo- deflection of strips being pmcessed in a continuous annealing fur (3)双锥度辊的形状参数中,平直段长度对带 nace JUniv Sei Technol Beijing 2007.14(6):580 钢屈曲变形的影响最大,总锥度和锥度比的影响居 [13]Sun Z J LiS D.Lin D W.The distribution of strip tension in 中,平直段直径影响最小. the fimace ofCAPL East China InstMetall 1994 11(2):130 孙中建,李胜柢,林大为,CAPL炉内带钢张力分布研究 参考文献 华东冶金学院学报,1994,11(2):130) [14]Xu YG Chen SQ Sun ZJ Study and discussion of the mecha- [1]Brighenti R.Buckling of cmacked thin plates under tension or cam- nism for the hot waved surface of strip in the CAPL fimace East pression Thin Walled Stmuct 2005 43(2):209 Chna Inst Metall 1994.11(2):1 [2]W ang C M.Chen Y.X iang Y.Plastic buckling of rectangular (许永贵,陈守群,孙中建.CAPL炉内带钢热瓢曲机理的探 plates subjected to ntemediate and end mnplane loads IntJ Solids 究.华东治金学院学报,199411(2):1)北 京 科 技 大 学 学 报 第 32卷 表 6 计算工况 Table6 Calculationcondition mm C1+C2 C1/C2 L D 1∙5 1∙5 600 700‚750‚800‚850‚900 变形越不容易发生.并且‚带钢产生塑性变形需要 施加的张应力载荷均低于张应力水平 6∙8MPa‚带 钢将产生一定程度的塑性变形.通过比较横向压应 力最大值和带钢产生塑性变形时需要的最小张应力 载荷值‚可以看出‚在以上这些双锥度辊形状参数 中‚平直段直径对带钢瓢曲变形的影响最小. 3 结论 (1) 模拟了双锥度辊带钢应力应变分布情况‚ 在双锥度辊锥肩处‚带钢张应力和横向应力发生突 变‚横向压应力和塑性变形都具有最大值‚可以推断 此处带钢最先发生瓢曲变形‚这与现场观测的带钢 发生瓢曲变形的位置完全吻合. (2) 双锥度辊总锥度和锥度比越大以及平直段 长度和直径越小‚带钢越容易在锥肩处发生屈曲变 形和塑性变形‚即带钢越容易发生瓢曲变形. (3) 双锥度辊的形状参数中‚平直段长度对带 钢屈曲变形的影响最大‚总锥度和锥度比的影响居 中‚平直段直径影响最小. 参 考 文 献 [1] BrighentiR.Bucklingofcrackedthin-platesundertensionorcom- pression.ThinWalledStruct‚2005‚43(2):209 [2] WangCM‚ChenY‚XiangY.Plasticbucklingofrectangular platessubjectedtointermediateandendinplaneloads.IntJSolids Struct‚2004‚41(16/17):4279 [3] KimSE‚ThaiHT‚LeeJH.Bucklinganalysisofplatesusing thetwovariablerefinedplatetheory.ThinWalledStruct‚2009‚ 47(4):455 [4] RahaiAR‚AliniaMM‚KazemiS.Bucklinganalysisofstepped platesusingmodifiedbucklingmodeshape.ThinWalledStruct‚ 2008‚46(5):484 [5] KasedaY.Controlofflatnessdefectsandwarpinprocessing plant.CAMP-ISIJ‚1992‚5(5):1463 [6] KasedaY.Controlofbucklingandcrossbowinstripprocessing lines.IronSteelEng‚1994‚9(9):14 [7] MatobaT.Effectofrollcrownonheatbucklingandstripwalkin continuousannealinglines.CAMP-ISIJ‚1992‚5(5):1459 [8] MatobaT‚AtakaM‚AokiI‚etal.Effectofrollcrownonheat bucklingincontinuousannealingandprocessinglines.Tetsu-to- Hagane‚1994‚80(8):61 [9] SasakiT.Controlofstripbucklingandsnakingincontinuousan- nealingfurnace.KawasakiSteelTechRep‚1984(9):36 [10] JacquesN‚EliasA‚Potier-FerryM‚etal.Bucklingandwrink- lingduringstripconveyinprocessinglines.JMaterProcessTech- nol‚2007‚190(1-3):33 [11] HuGH.Controlofthermalcrownintherollerinsidethecontin- uousannealingfurnace.BaosteelTechRes‚2009‚3(1):51 [12] DaiJB‚ZhangQD‚ChangTZ.FEManalysisoflargethermo- deflectionofstripsbeingprocessedinacontinuousannealingfur- nace.JUnivSciTechnolBeijing‚2007‚14(6):580 [13] SunZJ‚LiSD‚LinDW.Thedistributionofstriptensionin thefurnaceofCAPL.EastChinaInstMetall‚1994‚11(2):130 (孙中建‚李胜袛‚林大为.CAPL炉内带钢张力分布研究. 华东冶金学院学报‚1994‚11(2):130) [14] XuYG‚ChenSQ‚SunZJ.Studyanddiscussionofthemecha- nismforthehot-wavedsurfaceofstripintheCAPLfurnace.East ChinaInstMetall‚1994‚11(2):1 (许永贵‚陈守群‚孙中建.CAPL炉内带钢热瓢曲机理的探 究.华东冶金学院学报‚1994‚11(2):1) ·1220·
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