四川大学学报：工程科学版2011，Vol.43Issue(4)：241-248,8.
机床有限元热分析中对流换热系数的计算方法研究
Research on Calculation Methods of Convective Heat Transfer Coefficients for Machine Tools＇ Thermal Analysis
摘要
Abstract
The calculation of convective heat transfer coefficients is the key problem of machine tools＇thermal analysis.Taking the Y directional screw-nut feed system of a Gantry Machining Center as an example,a method for the calculation of convective heat transfer coefficients was proposed based on a neural network and experimental data.A finite element model of the screw-nut feed system was build as this method＇s base,and by using this model＇s thermal analytical data,a neural network was build to simulate relationships between convective heat transfer coefficients and the temperature field.Importing measured temperatures into the established neural network,the value of convective heat transfer coefficients was computed.Finally,by comparing results of the above method and a method based on similarity theory with experimental data,the accuracy and validity of this method were proved.关键词
对流换热系数/热分析/神经网络/龙门加工中心Key words
convective heat transfer coefficient/thermal analysis/neural network/gantry machining center分类
金属材料引用本文复制引用
阳红,殷国富,方辉,刘立新,张定金,徐德炜..机床有限元热分析中对流换热系数的计算方法研究[J].四川大学学报：工程科学版,2011,43(4):241-248,8.基金项目
科技重大专项资助项目 （）
