飞轮材料对磁悬浮轴承转子系统动态特性的影响
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摘要
为了解磁悬浮轴承转子系统动态特性,进而对其结构进行优化设计,建立了磁悬浮轴承转子系统的动力学模型,假设磁轴承是具有一定刚度的弹簧模型,以7075铝合金材料飞轮为突破口,利用ANSYS Workbench进行转子系统的模态分析,得到了转子的固有频率和振型;并针对不同飞轮材料对转子系统固有频率的影响规律进行对比研究,得出7075铝合金作为飞轮材料优于其他3种合金材料的结论,为转子系统的结构设计和优化提供了重要参考。
In order to study the dynamic characteristic of rotor systems of maglev bearing and put forward an optimization design on its structure,in this paper,a dynamic model of a maglev bearing rotor system was established.Assuming the magnetic bearing as a spring model with certain stiffness,starting with 7075 aluminum alloy flywheel,the modal analysis of the rotor system has been performed based on ANSYS Workbench,by which the inherent frequency and vibration mode of the rotor has been obtained.In addition,comparing and analyzing the inherent frequencies of the rotor system influenced by different flywheel materials,it was recognized that 7075 aluminum alloy was better than other 3 kinds of alloys as flywheel material,which provides important reference for rotor system structure design and optimization.
In order to study the dynamic characteristic of rotor systems of maglev bearing and put forward an optimization design on its structure,in this paper,a dynamic model of a maglev bearing rotor system was established.Assuming the magnetic bearing as a spring model with certain stiffness,starting with 7075 aluminum alloy flywheel,the modal analysis of the rotor system has been performed based on ANSYS Workbench,by which the inherent frequency and vibration mode of the rotor has been obtained.In addition,comparing and analyzing the inherent frequencies of the rotor system influenced by different flywheel materials,it was recognized that 7075 aluminum alloy was better than other 3 kinds of alloys as flywheel material,which provides important reference for rotor system structure design and optimization.
引文
[1]施韦策G,布鲁勒H,特拉克斯勒A.主动磁轴承基础、性能及应用[M].虞烈,袁崇军,译.北京:新时代出版社,1997.
[2]郭树涛.主动磁悬浮轴承的工作原理及发展趋势[J].重庆科技学院学报,2006,8(4):47-48.
[3]李红伟,于文涛,刘淑琴.基于ANSYS的磁悬浮挠性转子模态分析与设计[J].中国机械工程,2014,25(11):1447-1452,1459.
[4]万金贵,汪希平,高琪,等.基于ANSYS的磁悬浮轴承转子系统的动力学特性研究[J].轴承,2010(6):1-5.
[5]宋骏琛.基于SolidWorks和COSMOSWorks的磁轴承转子结构模态分析[J].制造业自动化,2015,37(3):7-12.
[6]张保强.磁轴承—转子系统的有限元模型修正及相关问题研究[D].南京:南京航空航天大学,2009:14-19.
[7]李克雷,谢振宇.基于ANSYS的磁悬浮转子的模态分析[J].机电工程,2008(1):1-3.
[2]郭树涛.主动磁悬浮轴承的工作原理及发展趋势[J].重庆科技学院学报,2006,8(4):47-48.
[3]李红伟,于文涛,刘淑琴.基于ANSYS的磁悬浮挠性转子模态分析与设计[J].中国机械工程,2014,25(11):1447-1452,1459.
[4]万金贵,汪希平,高琪,等.基于ANSYS的磁悬浮轴承转子系统的动力学特性研究[J].轴承,2010(6):1-5.
[5]宋骏琛.基于SolidWorks和COSMOSWorks的磁轴承转子结构模态分析[J].制造业自动化,2015,37(3):7-12.
[6]张保强.磁轴承—转子系统的有限元模型修正及相关问题研究[D].南京:南京航空航天大学,2009:14-19.
[7]李克雷,谢振宇.基于ANSYS的磁悬浮转子的模态分析[J].机电工程,2008(1):1-3.