Development of a Rotor Model Considering the Crack Propagation due to Fatigue and the Method for Vibration Diagnosis and Prognostics of the Crack Growth

(1)[裂纹转子振动分析方法的发展]发展了非对称弹簧支承的含开裂纹转子的振动分析方法，并进行了实验验证。(2)[裂纹模型的发展]建立了张开裂纹模型和呼吸型裂纹模型。并进行了两年的呼吸裂纹疲劳试验，验证了模型的正确性。(3)[含呼吸裂纹转子振动的数值方法研究]建立了含呼吸裂纹转子模型，给出了含呼吸裂纹转子亚共振振动的数值计算方法。

The following 3 purposed were achieved.(1) [Development of the analytical method of the vibration of the cracked rotor] The analytical method of the vibration of the rotor with open crack supported by the asymmetric spring characteristic was developed and verified experimentally. (2) [Development of the model of the crack] The models of the open crack and the breathing crack were developed. Also, the fatigue test for generating the breathing crack were performed for two years to confirm the model. (3) [Development of the numerical method for the vibration of the rotor with breathing crack] The rotor model with breathing crack was constructed, and the numerical method for the vibration at the sub-resonances due to breathing crack was developed.