关键词: 振动与波, 机械松动, 故障特性, 转子系统, 非线性振动

Abstract:

There is a looseness phenomena existing in mechanical system widely which includes foundation looseness, pedestal looseness and match of components looseness, causes of the three types of looseness were explained by illustrated. Some common kinds of looseness models applied by domestic and foreign scholars were concluded. Research of single looseness, looseness coupled with rub-impact, looseness coupled with crack, looseness at two supports, slowly varying mass rotor system with looseness and two-span rotor system with looseness was expounded from the aspect of the dynamics modeling, solving method and their nonlinear dynamics characteristics. Research of looseness experiments were also introduced briefly. Finally, the key problem or further study of looseness fault was prospected.