Vibration response analysis of a composite sandwich plate under a time-varying thermal environment

被引：0
|
作者：
Zhao R. [1 ]
Yu K.-P. [1 ]
Cui N.-G. [2 ]
机构：
[1] Department of Astronautic Science and Mechanics, Harbin Institute of Technology, Harbin
[2] Department of Astronautic Engineering, Harbin Institute of Technology, Harbin
来源：
Yu, Kai-Ping (yukp@hit.edu.cn) | 2018年 / Nanjing University of Aeronautics an Astronautics卷 / 31期
关键词：
Composite structure; Structural vibration; Thermal vibration analysis; Time integration algorithm; Time-varying structure;
D O I：
10.16385/j.cnki.issn.1004-4523.2018.02.017
中图分类号：
学科分类号：
摘要：
The composite structure has been widely used in the aerospace engineering. When the aircraft is flying at high speed in the atmosphere, the aerodynamic heat load will change the dynamic characteristic and dynamic response of the composite structure. At present, the numerical simulation of the dynamic response of composite structures in constant temperature environment has been studied by scholars, while the numerical simulation in the time-varying temperature environment has not been studied yet. In this paper, a numerical simulation analysis method for the dynamic response analysis of composite sandwich plates in time-varying temperature environments is proposed. Firstly, the finite element model of composite sandwich plates is established utilizing the plate element based on the piecewise shear deformation theory. And then the dynamic response of composite sandwich plates under the time-varying temperature environment is calculated by using the time finite element method for time-varying structures. Finally, the time-frequency analysis of the dynamic response is performed and the results are compared with the reference natural frequencies obtained using the theoretical modal analysis, by which the validity and accuracy of the proposed method are verified. The numerical simulation analysis method proposed in this paper can effectively predict the thermal vibration response of composite sandwich plates in time-varying temperature environments, and provides a theoretical basis for the design and analysis of composite structures in thermal environment. © 2018, Nanjing Univ. of Aeronautics an Astronautics. All right reserved.
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页码：329 / 335
页数：6
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