大型单架轧机弹性基础的防震性能优化
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摘要
给出了轧机机架及混凝土基础间设置弹性阻尼元件形成隔震的数学表达,对于基于力的传递率的隔震基础的隔震效果建立了包括弹簧刚度及混凝土基础质量及外形尺寸等诸参数的优化模型,同时考虑了设计要求。针对模型的复杂性,传统设计方法无法寻求最优解的情况采用了基于Cauchy函数的快速模拟退火寻优算法,结果表明采用优化设计方案的轧机弹性基础减震效果大幅度上升,其它指标也更加合理。
The damage by earthquake of large rolling mills will not only cause great economic loss,but also impair personal safety.The design of rolling mill foundation should reduce the earthquake wave towards the stand.This paper presents the mathematical expression of earthquake resistance of the elastic damping element between the rolling mill stand and its concrete foundation,and establishes the optimization model of the earthquake resistance effectiveness including such parameters as spring stiffness,foundation mass and outline size,with the consideration of the design requirement.Due to the complexity of the model,the fast algorithm of simulated annealing(SA) based on Cauchy function is adopted under the condition that the traditional method fails to obtain the optimum solution.The calculation result indicates that the shock absorbing effectiveness using the optimization method is obviously increased,and the other parameters are more proper.
The damage by earthquake of large rolling mills will not only cause great economic loss,but also impair personal safety.The design of rolling mill foundation should reduce the earthquake wave towards the stand.This paper presents the mathematical expression of earthquake resistance of the elastic damping element between the rolling mill stand and its concrete foundation,and establishes the optimization model of the earthquake resistance effectiveness including such parameters as spring stiffness,foundation mass and outline size,with the consideration of the design requirement.Due to the complexity of the model,the fast algorithm of simulated annealing(SA) based on Cauchy function is adopted under the condition that the traditional method fails to obtain the optimum solution.The calculation result indicates that the shock absorbing effectiveness using the optimization method is obviously increased,and the other parameters are more proper.
引文
[1]赵岩,林家浩,曹建华.转子系统的平稳-非平稳随机地震响应分析[J].计算力学学报,2002,19(1):7-11.
[2]陈拥军,祝长生.地震激励下基于LMI的转子系统振动主动控制[J].浙江大学学报(工学版),2008,42(4):656-650.
[3]肖岩,周涛,李华.局部约束轧制H型钢柱的抗震性能研究[J].建筑结构学报,2008,29(2):118-224.
[4]S.German,D.German.Tochastic relaxation,Gibbs distribution and the Bayesian restoration in ima-ges[J].IEEE Transactions of Pattern Analysis andMachine Intelligence,1984,6(6):721-741.
[5]J.S.Jang,C.T.Sun and E.Mizutani,Neuro-Fuzzy and Soft Computing[M].Prentice Hall,UpperSaddle River,NJ,1997.
[2]陈拥军,祝长生.地震激励下基于LMI的转子系统振动主动控制[J].浙江大学学报(工学版),2008,42(4):656-650.
[3]肖岩,周涛,李华.局部约束轧制H型钢柱的抗震性能研究[J].建筑结构学报,2008,29(2):118-224.
[4]S.German,D.German.Tochastic relaxation,Gibbs distribution and the Bayesian restoration in ima-ges[J].IEEE Transactions of Pattern Analysis andMachine Intelligence,1984,6(6):721-741.
[5]J.S.Jang,C.T.Sun and E.Mizutani,Neuro-Fuzzy and Soft Computing[M].Prentice Hall,UpperSaddle River,NJ,1997.
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