【作者】 尚志勇； 张小龙； 江俊；

【Author】 Zhiyong Shang Xiaolong Zhang Jun Jiang MOE Key Laboratory of Strength and Vibration, Xi’an Jiaotong University, Xi’an, 710049, China

【机构】 西安交通大学强度与振动教育部重点实验室；

【摘要】 本文建立了考虑转子和定子动力学特性的转子/定子碰摩的模型,先采用解析的方法得到了干摩擦反向涡动失稳的存在区域和涡动频率,然后采用数值仿真的方法得到不同质量比,不同碰摩面刚度下的转子和定子的反向涡动的响应。发现反向涡动失稳时的频率随着碰摩面刚度的增大而逐渐增大,转子和定子的幅值随之却逐渐减小;在反向涡动失稳的过程中,前向涡动频率始终存在,并造成反向涡动失稳的幅值随着反向涡动频率的增加而减小。更多还原

【Abstract】 This paper established the rotor/stator rubbing model considering the rotator and stater dynamics characteristic property. At first ,the existence condition and the whirl frequencies of the dry friction back whirl of the model are derived .Then ,we use numerical simulation methods and get the responses of rotor and stator in rubbing systems of different mass ratio,different contact stiffness.The back whirl frequencies increase with increasing of contact stiffness,but amplitudes of rotor and stator gradually reduced;In the dry friction back whirling,forward whirl frequency always exist,and cause the amplitudes of back whirl reduced with the increasing of back whirl frequences.更多还原