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摘要：
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通过铝合金在Gleeble-1500上的实验数据,建立了本构方程。根据弹塑性热力耦合大变形有限元理论,获得了热轧过程中的数值仿真模型,分析了压下率、轧制速度以及接触传热系数等参数对温度和流动应力变化规律的影响,并与某铝厂热轧板带生产过程中不同压下率下的力能参数变化进行了对比,计算结果表明模拟值与实测值吻合较好,误差低于15%。
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From the measured data for aluminum experiments on Gleeble-1500,the constitutive equation was set up and the hot rolling model was established with the aid of elastic-plastic and thermal-mechanical coupled FEM.The reduction,work roll speed and contact heat transfer coefficient's influence on temperature difference across the thickness of slabs and flow stress curvature were analyzed.The rolling process at different reductions was simulated with the computer mode1,the calculated rolling loads were agreed well with the production logs and their errors were less than 15%.
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基金项目：
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教育部科学技术重点项目(106123)
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作者简介：
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参考文献：
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[1]刘洋,周旭东,孟惠霞.带钢热连轧过程轧制力三维有限元模拟[J].锻压技术,2007,32(5):142-144.
[2]杜凤山,周维海,臧新良.板材热连轧过程的计算机仿真[J].机械工程学报,2001,37(12):67-69.
[3]周维海,臧新良,杜凤山,等.板带热轧过程中温度场的三维热力耦合有限元模拟[J].钢铁研究学报,2001,13(3):24-26.
[4]侯立刚,张国民,肖宏.热连轧过程中温度场的模拟[J].钢铁研究学报,2006,18(8):32-34.
[5]杨理诚,邢素芳,刘波.热连轧过程中力能参数的三维仿真分析[J].河北工业大学学报,2006,35(2):6-10.
[6]范为福,乔国谦,黎刚生.金属塑性有限元模拟算法研究[J].锻压技术,2007,32(3):96-99.
[7]Lin Zone-ching,Yang Wen-Shy.Rolling process analysis ofalumium strip by a coupled thermo-elastic-plastic model[J].Int.J.Mach.Tools Manufuct.,1995,35(4):619-635.
[8]Lin Z C,Shen C C.A three-dimensional finite element methodfor a nonisothermal aluminum flat strip rolling process[J].Journal of Materials Engineering and Performance,1996,5(4):452-461.
[9]Jiang Z Y,Tieu A K,Lu C W H S.A three-dimensional ther-mo-mechanical finite element model of complex strip rollingconsidering sticking and slipping friction[J].Journal of Mate-rials Processing Technology,2002,125:649-656.
[10]郭金龙,康煜华,刘义伦,等.铝热连轧粗轧区轧件温度场的数值模拟[J].湖南科技大学学报:自然科学版,2007,22(2):31-34.
[11]Chen W C,Samarasekera I V,Hawbolt E B.Fundamentalphenomena governing heat transfer during rolling[J].Metal-lurgical Transactions A,1993,24A:1307-1320.
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