1.School of Mechanical Engineering and Automation, Northeastern University, Shenyang Liaoning 110819, China;
2.Key Laboratory of Vibration and Control of Aero-Propulsion Systems Ministry of Education of China, Northeastern University, Shenyang Liaoning 110819, China;
3. Guidaojiaotong Polytechnic Institute, Shenyang Liaoning 110027, China
Abstract：The mistuning parameter identification of a coating blisk is an important foundation for its vibration reduction design.Based on the component mode mistuning(CMM) model, a method for the mistuning identification of the coating blisk was presented.On the basis of the introduction of the CMM,the theoretical derivation for the identification of mass mistuning and stiffness mistuning was carried out according to the composite structure characteristics of the coating blisk, in which the identification of mass mistuning was made with an approximate treatment.The procedure of the mistuning identification was provided, including the modal participation factors calculations of mass mistuning and stiffness mistuning, mass mistuning identification, calculation of normal coordinate vector and stiffness mistuning identification.With the proposed identification procedure and algorithm, the mistuning identification of a simplified coating blisk was performed, and the distributions of mass and stiffness mistuning of blisk were obtained.Based on the identification results, a new mistuning blisk model was set up and the rationality of the identification results were proved by comparing the natural characteristics obtained by the new model and the finite element model of the whole coating blisk.
徐昆鹏1,2，孙 伟1,2，高俊男1,2，梅雪峰3. 基于构件模态失谐模型的涂层整体叶盘失谐辨识[J]. 振动与冲击, 2019, 38(14): 118-124.
XU Kunpeng1,2，SUN Wei1,2，GAO Junnan1,2，MEI Xuefeng3. Mistuning identification of a coating blisk based on the component mode mistuning model. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(14): 118-124.
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