Y型轧机轧辊的优化设计
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摘要
三辊Y型轧机为一种新型的线材轧机。轧辊是轧机的重要零件,其尺寸影响轧辊的强度、刚度,以及轧件的质量和轧机的使用寿命。因此,对Y型轧机的轧辊进行结构尺寸优化设计有重要的意义。参考准250Y型三辊连轧机组的第1道次轧辊尺寸建立了轧辊模型。利用有限元软件ANSYS对轧辊进行应力和变形分析,并建立了轧辊优化的数学模型。其目标函数采用三种方案建立,并用一级综合模糊评判法对三种方案的优化结果进行评判。得出的结论是多目标优化方案为最优方案。
Y-type rolling mill with three rollers is a new kind of wire mill. Roller is an important part of the rolling mill,and its size effects the strength, stiffness, as well as the rolling piece quality and service life of the rolling mill. Therefore, it is important to optimize the roller structure dimension of Y-type mill. The roller model was set up referring to the first pass roller dimension of 准250 Y-type mill with three rollers. The stress and deformation of roller were analyzed by the finite element software ANSYS. And the optimal mathematic model was established. Objective function was established by three kinds of scheme. The optimal results were evaluated by one-order comprehensive fuzzy evaluation method. The conclusion is that the multi-objective scheme is the most optimal.
Y-type rolling mill with three rollers is a new kind of wire mill. Roller is an important part of the rolling mill,and its size effects the strength, stiffness, as well as the rolling piece quality and service life of the rolling mill. Therefore, it is important to optimize the roller structure dimension of Y-type mill. The roller model was set up referring to the first pass roller dimension of 准250 Y-type mill with three rollers. The stress and deformation of roller were analyzed by the finite element software ANSYS. And the optimal mathematic model was established. Objective function was established by three kinds of scheme. The optimal results were evaluated by one-order comprehensive fuzzy evaluation method. The conclusion is that the multi-objective scheme is the most optimal.
引文
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[2]胡海萍,孙吉先,朱为昌.Y型三辊轧制变形过程有限元模拟与实验[J].北京科技大学学报,1999,21(4):372-375.
[3]李黎明.ANSYS有限元分析使用教程[M].北京:清华大学出版社,2005:322-339.
[4]闫盖,郑燕萍,张文彦,等.基于正交试验的板料冲压成形工艺参数优化[J].热加工工艺,2013,42(17):94-97.
[5]谢庆生,罗延科,李屹.机械工程模糊优化方法[M].北京:机械工程出版社,2002:73-83.
[6]刘扬松,李文方.机械设计的模糊学方法[M].北京:机械工程出版社,1996:22-33,130-148.
[7]杨薇,官德娟.模糊方法论的发展及其在机械工业中的应用[J].昆明理工大学学报,2001(3):427-430.
[8]孙启新,杨进,董玉平.板料冲压成形工艺参数多目标模糊优化[J].热加工工艺,2013,42(23):118-121.