硬涂层悬臂层合板固有特性的解析分析  

Analytical Analysis of Natural Characteristics for Cantilevered Laminate Plate with Hard-Coating

作　　者：孙伟[1] 刘小舟[1] 王茁[1] 朱明伟[1] 

机构地区：[1]东北大学机械工程与自动化学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2017年第8期1123-1127,共5页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(51375079)

摘　　要：基于Ritz理论,研究了解析求解硬涂层悬臂层合板固有特性的方法.用中性面的位移表征硬涂层悬臂层合板的应变能和动能,然后推导出硬涂层悬臂层合板自由振动的运动方程,并给出求解该复合结构固有频率、模态振型、模态损耗因子的方法.以涂覆NiCoCrAlY+YSZ硬涂层的T300/QY89l1型层合板为对象进行了实例研究,分别采用本文方法和ANSYS软件求解该复合结构的固有特性,通过结果比对证明了本文方法的合理性.实践表明,将硬涂层视为复合结构一个特殊的层和采用量纲反变换,可有效获得具有工程意义的硬涂层层合板固有特性参数.Based on the Ritz theory, an analytical method of solving the natural characteristics of hard-coating cantilever laminate plate was developed.The strain and kinetic energy of composite plate was characterized by the displacement of neutral surface, then the free vibration equation was derived and the methods of solving natural frequency, mode shape and modal loss factor were presented.A T300/QY89l1 laminate plate coated with NiCoCrAlY＋YSZ hard coating was chosen to demonstrate the as-proposed method.The natural characteristics were calculated by the as-proposed method and ANSYS software, respectively.The obtained results were compared with the purpose of assessing the rationality of the method proposed.The practice shows that the natural characteristic parameters of hard-coating cantilever laminate plate with engineering significance can be obtained by treating the hard-coating layer as a special layer and implementing the inverse transformation of dimension.

关 键 词：硬涂层 悬臂层合板 复合结构 固有特性 解析分析 

分 类 号：TH113[机械工程—机械设计及理论] TB535[理学—物理]