| 采用BP神经网络和挤压形状因子预测挤压力与挤压出口温度 |
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| 引用本文： | 莫建虎,李落星,周佳,何芯,向冬霞.采用BP神经网络和挤压形状因子预测挤压力与挤压出口温度[J].矿冶工程,2009,29(2). |
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| 作者姓名： | 莫建虎 李落星 周佳 何芯 向冬霞 |
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| 作者单位： | 1. 湖南大学汽车车身先进设计与制造国家重点实验室,湖南,长沙,410082;湖南大学材料科学与工程学院,湖南,长沙,410082
2. 重庆镁业科技股份有限公司,重庆,400051 |
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| 基金项目： | 教育部长汀学者与创新团队发展计划项目，国家科技支撑计划重点项目 |
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| 摘 要： | 结合数值模拟和BP神经网络,研究了挤压形状因子对挤压过程中挤压力和挤压出口温度的影响规律.采用DEFORM-3D软件模拟了14组不同挤压形状因子的镁合金型材挤压变形过程,得到挤压力和挤压出口温度变化曲线.采用MATLAB软件建立了挤雎力和挤压出口温度预测BP神经网络,选取5组数值模拟结果作为训练样本,以挤压形状因子和挤压行程为输入变量,挤压力和挤压出口温度为输出变量,对网络进行训练.采用训练后的网络对训练样本以外的4组挤压形状因子下的挤压力和挤压出口温度进行预测,结果表明预测得到的结果与数值模拟得到的结果相吻合,最大误差小于2%.
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| 关 键 词： | 挤压形状因子 数值模拟 BP神经网络 挤压力 挤压出口温度 |
Application of BP Neural Network and Shape Factor in Predicting Extrusion Force and Exit Temperature |
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| MO Jian-hu,LI Luo-xing,ZHOU Jia,HE Xin,XIANG Dong-xia.Application of BP Neural Network and Shape Factor in Predicting Extrusion Force and Exit Temperature[J].Mining and Metallurgical Engineering,2009,29(2). |
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| Authors: | MO Jian-hu LI Luo-xing ZHOU Jia HE Xin XIANG Dong-xia |
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| Affiliation: | 1.State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body;Hunan University;Changsha 410082;Hunan;China;2.College of Materials Science and Engineering;3.Chongqing Magnesium Science and Technology Co Ltd;Chongqing 400051;China |
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| Abstract: | The effects of shape factor on extrusion force and exit temperature during extrusion processes were studied by using numerical simulation and BP neural network.The extrusion processes of 14 groups of magnesium alloy solid profiles with different shape factors were simulated using DEFORM-3D software,thereby the curves of extrusion force and exit temperature variation were obtained.MATLAB software was used to establish BP neural network for predicting the extrusion force and exit temperature.5 groups of numer... |
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| Keywords: | shape factor numerical simulation BP neural network extrusion force exit temperature |
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