填充泡沫全复合蜂窝芯层三明治结构非线性阻尼特性研究

doi:10.3901/JME.260380

摘要/Abstract

摘要： 提出了一种预测填充泡沫全复合蜂窝芯层三明治结构(Foam-filled all-composite honeycomb-core sandwich panels, FF-ACHCSP)非线性阻尼特性理论模型。首先将Reddy高阶剪切变形理论和哈密顿原理结合，建立了结构的理论框架。然后利用有限元的方法，求解了FF-ACHCSP结构的能量方程，同时利用复模量法对非线性阻尼进行表达。最终，整理得到一套完整的理论模型，对FF-ACHCSP结构的固有频率，模态振型，模态阻尼比和频率响应曲线进行求解。为验证理论模型的准确性，研究搭建了振动测试系统，并制备了实验件，对实验件进行振动测试，二者结果吻合良好，证明了理论模型的准确性。最后，为对结构进一步优化，探究了填料密度，蜂窝单元壁厚和壁宽对FF-ACHCSP结构阻尼特性的影响。所提出的理论模型可准确预测FF-ACHCSP结构的阻尼特性，为此种结构的实际应用提供指导性建议。

关键词: 蜂窝芯, 全复合三明治结构, 非线性阻尼, 有限元法

Abstract: A theoretical model for predicting the nonlinear damping characteristics of foam-filled all-composite honeycomb-core sandwich panels (FF-ACHCSP) is presented. Firstly, the theoretical framwork of the structure is established by combining Reddy’s high-order shear theory with Hamilton's principle. Subsequently, the energy equations of the FF-ACHCSP structure are solved by the finite element method, and the nonlinear damping is expressed using the complex modulus method. Finally, a comprehensive theoretical model is developed, enabling the determination of natural frequencies, mode shapes, modal damping ratios, and frequency response curves of the FF-ACHCSP structure. To validate the accuracy of the theoretical model, a vibration testing system is set up, and experimental specimens are prepared for vibration testing. The results from both approaches agree well, confirming the accuracy of the theoretical method. Finally, to further optimize the structure, this study investigates the influence of filler density, honeycomb cell wall thickness, and wall width on the damping characteristics of the FF-ACHCSP structure. The theoretical model proposed accurately predicts the damping characteristics of the FF-ACHCSP structure, providing guiding suggestions for the practical application of this type of structure.

Key words: honeycomb-core, all-composite sandwich panels, nonlinear damping, finite element method

中图分类号:

TB535

许卓, 姚楠, 顾大卫, 谭大鹏, 李晖, 闻邦椿. 填充泡沫全复合蜂窝芯层三明治结构非线性阻尼特性研究[J]. 机械工程学报, 2026, 62(7): 308-323.

XU Zhuo, YAO Nan, GU Dawei, TAN Dapeng, LI Hui, WEN Bangchun. Research on the Nonlinear Damping Characteristics of Foam-filled All-composite Honeycomb-core Sandwich Panels[J]. Journal of Mechanical Engineering, 2026, 62(7): 308-323.

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链接本文: http://www.cjmenet.com.cn/CN/10.3901/JME.260380

http://www.cjmenet.com.cn/CN/Y2026/V62/I7/308

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