Free Vibrations of a New Three-Phase Composite Cylindrical Shell

IF 2.1 3区工程技术 Q2 ENGINEERING, AEROSPACE Aerospace Pub Date : 2023-11-29 DOI:10.3390/aerospace10121007

Tao Liu, Jinqiu Duan, Yan Zheng, Yingjing Qian

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Abstract

The novel concept of a functionally graded three-phase composite structure is derived from the urgent need to improve the mechanical properties of traditional two-phase composite structures in aviation. In this paper, we study the free vibrations of a new functionally graded three-phase composite cylindrical shell reinforced synergistically with graphene platelets and carbon fibers. We calculate the equivalent elastic properties of the new three-phase composite cylindrical shell using the Halpin-Tsai and Mori-Tanaka models. The governing equations of this three-phase composite cylindrical shell are derived by using first-order shear deformation theory and Hamilton’s principle. We obtain the natural frequencies and mode shapes of the new functionally graded three-phase composite cylindrical shell under artificial boundary conditions. By comparing the results of this paper with the numerical results of finite element software, the calculation method is verified. The effects of the boundary spring stiffness, GPL mass fraction, GPL functionally graded distributions, carbon fiber content, and the carbon fiber layup angle on the free vibrations of the functionally graded three-phase composite cylindrical shell are analyzed in depth. The conclusions provide a certain guiding significance for the future application of this new three-phase composite structure in the aerospace and engineering fields.

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新型三相复合圆柱壳的自由振动

功能分级三相复合材料结构的新概念源于航空领域对改善传统两相复合材料结构机械性能的迫切需求。在本文中，我们研究了石墨烯平板和碳纤维协同增强的新型功能分级三相复合材料圆柱壳体的自由振动。我们使用 Halpin-Tsai 和 Mori-Tanaka 模型计算了新型三相复合材料圆柱壳的等效弹性特性。利用一阶剪切变形理论和汉密尔顿原理推导出了这种三相复合圆柱壳的控制方程。我们得到了新型功能分级三相复合圆柱壳在人工边界条件下的固有频率和模态振型。通过将本文结果与有限元软件的数值结果进行比较，验证了计算方法的正确性。深入分析了边界弹簧刚度、GPL 质量分数、GPL 功能分级分布、碳纤维含量和碳纤维铺层角度对功能分级三相复合材料圆柱壳自由振动的影响。结论对这种新型三相复合材料结构今后在航空航天和工程领域的应用具有一定的指导意义。

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来源期刊

Aerospace ENGINEERING, AEROSPACE-

CiteScore

3.40

自引率

23.10%

发文量

661

审稿时长

6 weeks

期刊介绍： Aerospace is a multidisciplinary science inviting submissions on, but not limited to, the following subject areas: aerodynamics computational fluid dynamics fluid-structure interaction flight mechanics plasmas research instrumentation test facilities environment material science structural analysis thermophysics and heat transfer thermal-structure interaction aeroacoustics optics electromagnetism and radar propulsion power generation and conversion fuels and propellants combustion multidisciplinary design optimization software engineering data analysis signal and image processing artificial intelligence aerospace vehicles'' operation, control and maintenance risk and reliability human factors human-automation interaction airline operations and management air traffic management airport design meteorology space exploration multi-physics interaction.