摘要
硬涂层作为一种阻尼结构可以有效地抑制发动机叶片的有害振动,其动力学研究对于设计和优化复合结构有着重要的意义。本文探讨了高温环境下发动机叶片-硬涂层阻尼结构的动力学模型,对其进行动力学分析,研究固有频率、振动响应幅值等动力学特性。采用数值模拟分析硬涂层、温度对复合结构动力学特性影响。利用有限元仿真对结果进行了验证,得到硬涂层对于发动机叶片有减振作用,在高温环境下依然有效。
Hard coating is a kind of damping structure can effectively restrain harmful vibration of engine blade,and its dynamic research is of paramount significance for the design and optimization of composite structure.The dynamic model of engine blade-hard coating damping structure under high temperature environment is discussed,and conducts dynamic analysis on it to study the dynamic characteristics such as inherent frequency,vibration response amplitude,etc.The numerical simulation is adopted to analyze the impact of hard coating and temperature on dynamic characteristics of composite structure.The finite element simulation is adopted for verification of results to conclude that the hard coating can reduce vibration of engine blade,which is still effective under high temperature environment.
作者
李双宝
李芳
LI Shuangbao;LI Fang(Science and Technology Innovation Division,CAUC,Tianjin 300300,China;Sino-European Institute of Aviation Engineering,CAUC,Tianjin 300300,China)
出处
《中国民航大学学报》
CAS
2024年第1期30-39,共10页
Journal of Civil Aviation University of China
基金
国家自然科学基金项目(12172376)。
关键词
高温环境
发动机叶片
硬涂层
动力学模型
high temperature environment
engine blade
hard coating
dynamic model
