螺旋槽干气密封系统非线性动力学行为分析  

Nonlinear Dynamics Behavior Analysis of a Spiral Grooved Gas Seal System

作　　者：丁雪兴[1,2] 张伟政[1,2] 俞树荣[1] 韩明君[1] 杜兆年[2] 

机构地区：[1]兰州理工大学,兰州730050 [2]兰州理工大学温州泵阀工程研究院,温州325105

出　　处：《中国机械工程》2010年第9期1083-1087,共5页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(50965010);浙江省科技计划项目(2008C21131);温州市对外科技合作交流项目(H20080018)

摘　　要：建立了轴向振动下气膜-密封动环系统动力学模型,利用Maple程序求解了轴向振动方程,获得了螺旋槽结构参数响应的振动相轨图、Poincaré映射图和时间历程图,进而分析了螺旋槽干气密封系统非线性动力学行为。研究结果表明:在特定的螺旋槽结构参数范围内存在着振动混沌现象,通过选择合理的螺旋槽结构参数可以控制混沌,为干气密封动态优化设计提供了理论基础。A dynamics model of a gas film and moving seal ring system subjected to axial vibration was established,and the axial vibration equation was solved by using the Maple programme,then the vibration phase chart,the Poincaré mapping chart and the time history chart responded by structural parameter of the spiral groove were obtained,and nonlinear dynamics behavior on spiral grooved gas seal system was discussed.The results show that there is a vibration chaos phenomenon on the specific spiral groove structural parameter.The chaos can be controlled by selecting reasonable structure parameters of the spiral groove,which provides the theoretical basis on dynamics optimization design of the gas seals.

关 键 词：干气密封 螺旋槽 非线性动力学 混沌 结构优化 

分 类 号：TH113.1[机械工程—机械设计及理论]