某小型高速转子临界转速分析

针对某一小型高速转子的实际结构，利用传递矩阵法计算了该转子在不同支承刚度条件下和不同跨度下的临界转速，分析了采用弹性支承与改变支点跨度对转子临界转速的影响。分析结果表明，由于小型转子本身结构特点和尺寸的限制，航空发动机中经常采用的弹性支承（加挤压油膜）结构措施，在小型转子中的应用将会遇到很多困难；而在条件许可下，利用改变支点跨度来调整临界转速是行之有效的

Critical Speed Analysis of a Small High Speed Rotor

Calculates and analyses critical speeds of a small high speed rotor under conditions of different support stiffnesses and spans with a transfer matrix method.Because of the limitation of structure characteristics and size of the rotor, it is difficult to adjust the critical speeds by means of flexible supports commonly used in aeroengines. Under permitted conditions,changing span of the rotor is a better way of changing the rotor critical speeds.