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个人信息Personal Information
教授
招生学科专业:
动力工程及工程热物理 -- 【招收博士、硕士研究生】 -- 能源与动力学院
航空宇航科学与技术 -- 【招收博士、硕士研究生】 -- 能源与动力学院
机械 -- 【招收硕士研究生】 -- 能源与动力学院
能源动力 -- 【招收博士、硕士研究生】 -- 能源与动力学院
毕业院校:东南大学
学历:东南大学
学位:工学博士学位
所在单位:能源与动力学院
办公地点:御道街29号
联系方式:c.zang@nuaa.edu.cn
电子邮箱:
ANALYSIS OF MICRO-SLIP PROPERTIES FOR MODELS OF BLADED DISC FRICTION JOINTS
点击次数:
所属单位:能源与动力学院
发表刊物:PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2017, VOL 7B
关键字:CONTACT CONSTRAINT VIBRATION
摘要:In the turbo-machinery structures with joints the contact pressures at contact interfaces are usually high enough to ensure that the contacting components stay joined and the gross slip does not occur. Nevertheless, the small relative slip over parts of the contact interface, i.e. the micro-slip, contributes significantly to the vibration damping. In the high-fidelity analysis of practical bladed discs the macro-slip model cannot provide sufficient accuracy for the predictive analysis of the properties of the friction damping in the contact interfaces. In this article, numerical studies of micro-slip damping effects is performed using 2D and 3D models of blade root joints. Analysis of hysteresis loops is performed to assess the influence of modelling parameters: choice of reference points, mesh configurations and other physical parameters. The impact of physical parameters, such as the contact geometry, friction coefficient, contact stiffness and tangential and normal loading, on the friction damping are numerically examined. The numerical results give a new insight in the micro-slip friction damping effects.
是否译文:否
发表时间:2017-01-01
合写作者:Chen, Junjie,周标,Petrov, E. P.
通讯作者:臧朝平