转子临界转速的试验－解析法  

An Experimental Analytic Method for Determination of Critical Speed of a Rotor

作　　者：胡璧刚[1] 赵明[1] 任平珍[1] 

机构地区：[1]西北工业大学动力工程系

出　　处：《振动．测试与诊断》1996年第4期15-19,共5页Journal of Vibration,Measurement & Diagnosis

摘　　要：实际的转子由于力学模型的建立，诸如支承刚度等的确定存在一些困难，因此单纯依据计算或试验难以精确地确定临界转速。本文采用试验－解析法确定某试验转子的一阶临界转速，并采用传递矩阵法计算转子的各阶纯弯曲临界转速和弯、扭耦合临界转速，以及各阶临界转速的位能分配。The critical speed of an actual rotor is quite difficult to determine accurately only by calculations or experiments due to some difficulties in establishing its mechincal model,e.g.the support stiffiness etc.In this paper,the first critical speed of an experimental rotor is obtained by using an experimental analytic method. The transfer matirx method is also used to calculate the critical speeds of different order of pure bending and twisting bending coupling modes, and the distribution of the potential evergy to different critical speeds.

关 键 词：试验-解析法 临界转速 转子 动力学 

分 类 号：TH113[机械工程—机械设计及理论] V231.96[航空宇航科学与技术—航空宇航推进理论与工程]