【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。更多还原

【Abstract】 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.更多还原