为提高设计效率并快速得到适于工程应用的高压压气机转子结构，以改型设计方法为基础对某高压压气机转子结构进行了详细设计，同时对结构改进方法进行了一定的探索。采用叶—盘耦合系统循环对称结构算法及整体转子系统二维轴对称结构算法进行强度设计及改进，前轴颈最大应力下降最多达26%；其次进行支承结构设计，计算校核母型机轴承承载能力。结果表明：轴向力安全裕度最小为28%，轴承寿命大于100 000 h；给出2种调整鼠笼厚度的估算方法用以指导三维有限元计算，同时计算得到前支承刚度；通过二维有限元分析模型计算转子的临界转速，仅将后轴承支承位置沿压气机轴线向后移动7.5 mm，全运行工况转速与第2阶临界转速的安全裕度由18.5%提高到21.2%。

To enhance the design efficiency and obtain the highpressure compressor rotor structure with engineering utility quickly,a certain high pressure compressor rotor structure was designed in detail based on retrofit design method and the improved method of structure was explored.The cyclic symmetric structure algorithm of bladedisk coupled system and the 2D axisymmetric structure algorithm of overall rotor system were adopted to design and improve the strength,thus the max equivalent stress of front shaft journal dropped as much as 26%.Support structure design was carried out to calculate and check the loading capacity of prototype bearing,the results show that the minimum safety margin of axial force was 28% and the bearing life was beyond 100 000 h.Two kinds of estimation methods of the squirrel cage bar thickness adjustment were proposed to guide 3D FEA and obtain the front support stiffness by calculation simultaneously.The critical speed of rotor was calculated using 2D FEA model.The safety margin between the full operating rotating speed and the 2nd stage critical speed was increased from 18.5% to 21.2% only by moving the rear bearing support position 7.5 mm backwards along compressor axis.

TK474.8+12