Vibration analysis of hole-containing laminated composite combined structures in electric aircraft using an area scan-fitting approach

IF 4.9 2区 工程技术 Q1 ACOUSTICS
Jian Zang , Yang Li , Zhi-Jian Wang , Ye-Wei Zhang , Li-Qun Chen
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引用次数: 0

Abstract

To address the dynamic analysis requirements of aerospace composite combined plate structures, a novel area scan-fitting method and Rayleigh-Ritz method (ASF-RRM) is proposed for investigating the vibration characteristics of hole-containing aircraft laminated composite combined structure (HALCCS). ASF-RRM can precisely discretize the irregular holes into coordinate points, and then the integral function of the irregular holes is obtained by fitting the mathematical function. Finally, within the theoretical framework of the energy principle, a comprehensive dynamic model containing complex hole geometry, elastic boundary constraints, internal coupling effects and high and low temperature variations is established. The method does not require the use of solving the holes by means of formulas and equations, which simplifies the analysis process. Numerical results obtained from finite element simulations and experimental modal tests confirm the high accuracy and reliability of the ASF-RRM approach. This work provides a novel analytical strategy for the dynamic characterization of complex perforated composite combined structures in aerospace engineering, particularly under coupled high-low temperature-mechanical boundary conditions.
基于区域扫描拟合的电动飞机含孔层合复合材料组合结构振动分析
针对航空航天复合材料组合板结构的动力分析需求,提出了一种新的区域扫描拟合方法和瑞利-里兹法(ASF-RRM)来研究含孔飞机层压复合材料组合结构(HALCCS)的振动特性。ASF-RRM可以将不规则孔洞精确离散为坐标点,然后通过拟合数学函数得到不规则孔洞的积分函数。最后,在能量原理的理论框架内,建立了包含复杂孔洞几何形状、弹性边界约束、内部耦合效应和高低温变化的综合动力学模型。该方法不需要使用公式和方程来求解孔,简化了分析过程。有限元模拟和模态试验的数值结果证实了ASF-RRM方法具有较高的精度和可靠性。这项工作为航空航天工程中复杂穿孔复合材料组合结构的动态特性提供了一种新的分析策略,特别是在高低温-机械耦合边界条件下。
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来源期刊
Journal of Sound and Vibration
Journal of Sound and Vibration 工程技术-工程:机械
CiteScore
9.10
自引率
10.60%
发文量
551
审稿时长
69 days
期刊介绍: The Journal of Sound and Vibration (JSV) is an independent journal devoted to the prompt publication of original papers, both theoretical and experimental, that provide new information on any aspect of sound or vibration. There is an emphasis on fundamental work that has potential for practical application. JSV was founded and operates on the premise that the subject of sound and vibration requires a journal that publishes papers of a high technical standard across the various subdisciplines, thus facilitating awareness of techniques and discoveries in one area that may be applicable in others.
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