【摘要】 本文主要研究热套盘鼓式转子的振动特性,并以4000马力机车燃气轮机转子作为对象进行研究。文中对七种不同类型的模型转子及实物转予进行了试验和计算。研究表明,剪切变形和热套联接处的刚度影响是不容忽视的,尤其是后者影响更大。为了考虑热套联接处的刚度影响,引入了刚度修正系数,在计算中,考虑了上述二者的影响后,使转子一阶固有频率的计算值与动试验的实测值比较吻合。有关计算方法可供设计该类转子时参考。更多还原

【Abstract】 The vibration characterictic of a rotor composed of disks and drums, Which is used in 4000hp gas turbine for locomotive is discribed in this paper. Seven types of model rotors and the real rotor are studied by experimental and calculating method. Study indicates, that the shsre deformation and the influence of different parts of roto must not be neglected. Especially, the influence of later is more obviously. With regard to the influence of stiffness of connecting parts. the modified coeffecient of stiffness is used in calculion. Having a regard for these factors, the calculated frequenc of 1st mode of rotor is agreed well with the experimental results. This method may be refered to the practical calcutation of the critical speed of rotor abovementioned.更多还原