基于热-固-声耦合的弹性壁板振动响应分析

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振动与冲击 ›› 2025, Vol. 44 ›› Issue (4) : 126-133.

振动理论与交叉研究

基于热-固-声耦合的弹性壁板振动响应分析

王凯伦1，王虎寅2，高鹏新2，瞿叶高*1

作者信息 +

Thermal vibration response of typical thermal protection structural components based on thermal-acoustic-solid coupling

WANG Kailun1，WANG Huyin2，GAO Pengxin2，QU Yegao*1

Author information +

文章历史 +

摘要

高速飞行器热防护壁板在高温、强噪声工作环境会表现出热屈曲、非线性热弹性振动等复杂动力学响应。本文考虑热防护壁板连接间隙接触，建立了热防护壁板热弹性动力学有限元数值模型，采用热响应与频域线性摄动分析叠加的耦合法对热防护壁板随机振动响应进行了分析，研究了不同连接方法对模态分析结果和热防护壁板的热振响应性能模拟精度的影响。通过数值模型的振动模态分析，与模态测试结果对比验证了模型的准确性。随后开展约束连接、连接器连接以及面接触连接三种不同的连接方式下热防护壁板的热振响应性能研究和试验研究。研究结果表明：热防护壁板的热振响应的计算结果与试验测量结果一致，冯•米塞斯应力均方根值与试验测量值之间的最大误差为5%，随机响应与试验测量结果一致。本研究为热-固-声耦合的弹性壁板的热振响应性能分析提供了一种有效的方法，为弹性壁板的热振响应性能预测提供了有效的参考。

Abstract

Thermal protection panels of high-speed aircraft exhibit complex dynamic responses such as thermal buckling and nonlinear thermoelastic vibrations under high-temperature and high-noise working conditions. This paper considers the contact of gaps in the thermal protection panels, establishes a finite element numerical model of the thermoelastic dynamics of the thermal protection panels, and uses a coupling method of thermal response and frequency domain linear perturbation analysis to analyze the random vibration response of the thermal protection panels. The impact of different connection methods on the modal analysis results and the simulation accuracy of the thermal vibration response performance of the thermal protection panels is studied. Through the vibration mode analysis of the numerical model, the accuracy of the model is verified by comparing with the modal test results. Subsequently, the thermal vibration response performance research and experimental research of the thermal protection panels under three different connection methods of constraint connection, connector connection, and surface contact connection are carried out. The research results show that the calculation results of the thermal vibration response of the thermal protection panels are consistent with the experimental measurement results, the maximum error between the root mean square value of the von Mises stress and the experimental measurement value is 5%, and the random response is consistent with the experimental results. This research provides an effective method for the analysis of the thermal vibration response performance of elastic panels with thermo-solid-acoustic coupling, and provides an effective reference for the prediction of the thermal vibration response performance of elastic panels.

导出引用

王凯伦1, 王虎寅2, 高鹏新2, 瞿叶高1. 基于热-固-声耦合的弹性壁板振动响应分析[J]. 振动与冲击, 2025, 44(4): 126-133

WANG Kailun1, WANG Huyin2, GAO Pengxin2, QU Yegao1. Thermal vibration response of typical thermal protection structural components based on thermal-acoustic-solid coupling[J]. Journal of Vibration and Shock, 2025, 44(4): 126-133

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