双面静水压下含点阵增强柱和空腔的夹芯板水下声振计算方法研究

赖喜悦; 陈美霞; 周志伟

双面静水压下含点阵增强柱和空腔的夹芯板水下声振计算方法研究

1. 华中科技大学船舶与海洋工程学院, 湖北武汉 430074;
2. 北京理工大学先进结构技术研究院轻量化多功能复合材料与结构北京市重点实验室, 北京 100081

基金项目:

国家自然科学基金资助项目(52071152)

详细信息

作者简介:
赖喜悦,男,1998年生,硕士生。研究方向:结构声学。E-mail:1780139028@qq.com

通讯作者:
陈美霞,女,1975年生,博士,教授,博士生导师。研究方向:舰船结构振动与噪声控制。E-mail:chenmx26@hust.edu.cn

中图分类号: U661.44
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出版历程
- 收稿日期: 2023-05-10
- 网络出版日期: 2023-09-12

Study on Calculation Method of Underwater Sound Vibration of Sandwich Plate under Double-Sided Hydrostatic Pressure

1. School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;
2. Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China

摘要

摘要: 随着潜艇工作深度不断增加,含点阵增强柱和空腔的复合材料夹芯板因其高强度和声振性能可设计性强的优良特性逐渐被应用于外部壳体结构。为建立一种考虑双面静水压的含点阵增强柱和空腔的复合材料夹芯板水下声振计算方法,研究高潜深环境下双面高静水压对围壳等内部充水结构声振性能的影响,本研究利用多层次均质化等效方法将含增强柱和空腔的水下复合材料夹芯板芯层等效为正交各向异性材料,得到均质夹芯板模型,然后基于应变能密度相等将横向双面静水压等效为面内均布载荷,对基于LW理论模型的均质夹芯板的水下振动方程进行修正,进而提出了一种考虑双面静水压的含点阵增强柱和空腔的复合材料板水下声振计算方法。最后,利用数值计算方法对本研究方法的准确性进行了验证,结果表明理论解与数值解吻合较好。该方法可以较准确的预报双面静水压对含点阵增强柱和空腔的复合材料夹芯板声振性能的影响。
- 点阵增强柱和空腔 /
- 均质化等效 /
- 静水压 /
- 声振计算方法
Abstract: With the increasing working depth of submarines, composite sandwich panels with lattice-reinforced columns and cavities are gradually applied into external shell structures due to their excellent characteristics of high strength and designability of acoustic vibration performance. In order to establish an underwater acoustic vibration calculation method for composite sandwich panels with lattice-reinforced columns and cavities considering double-sided hydrostatic pressure, the effect of high hydr-ostatic pressure on the acoustic vibration performance of the internal water-filled structures such as the enclosure shell under high diving depth is studied. Firstly, the multi-level homogenization equivalence method is used to treat the core layer of the submerged composite sandwich panel with reinforced columns and cavities as an orthogonal anisotropic material to obtain a homogeneous sandwich panel model. Secondly the transverse double-sided hydrostatic pressure is treated as the circumferential homogeneous load based on the strain energy density equality, and the underwater vibration equation of the homogeneous sandwich panel based on the LW theory model is modified. A method is proposed to calculate the underwater acoustic vibration of composite plate with lattice-reinforced columns and cavities considering the two-sided hydrostatic pressure. Finally, the accuracy of the method is verified using by numerical calculation methods. It is found out that the theoretical solution agrees well with the numerical solution. The method can predict the effect of two-sided hydrostatic pressure on the acoustic vibration performance of composite sandwich panels with lattice-reinforced columns and cavities accurately.
- lattice-reinforced columns and cavities /
- homogenization equivalence /
- hydrostatic pressure /
- sound vibration calculation method

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参考文献(17)

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