玻璃钢/复合材料 ›› 2019, Vol. 0 ›› Issue (7): 103-108.

• 应用研究 • 上一篇    下一篇

泡沫夹芯复合材料加筋结构振声特性研究

田旭军, 胡刚义, 黄国兵   

  1. 中国舰船研究设计中心,武汉430064
  • 收稿日期:2019-04-22 出版日期:2019-07-25 发布日期:2019-07-28
  • 作者简介:田旭军(1981-),男,硕士,高级工程师,主要从事复合材料结构设计方面的研究,94440929@qq.com。

STUDY ON VIBRATION AND ACOUSTIC CHARACTERISTICS OF FOAM SANDWICH COMPOSITE REINFORCED STRUCTURE

TIAN Xu-jun, HU Gang-yi, HUANG Guo-bing   

  1. China Ship Development and Design Center, Wuhan 430064, China
  • Received:2019-04-22 Online:2019-07-25 Published:2019-07-28

摘要: 为了研究泡沫夹芯复合材料加筋结构在工程应用中的振声效果,针对泡沫夹芯复合材料加筋板格结构和钢制板格结构,开展了空气中的振动模态对比试验,试验结果表明,与钢制结构相比,夹芯复合材料加筋板格的前三阶固有频率提高2倍以上,应用泡沫夹芯复合材料加筋结构能在减轻结构重量的同时,大幅提高整体结构刚度。基于Layerwise理论对复合材料加筋板格结构的模态试验进行仿真计算,计算结果与试验结果吻合,验证了仿真计算方法的准确性;在此基础上,仿真计算泡沫夹芯复合材料加筋板格结构在空气和流体介质中的模态和频响特性,并分析加强筋尺寸对板格固有频率的影响规律,为工程应用提供参考。

关键词: 泡沫, 夹芯复合材料, 加筋结构, 固有频率, 振声

Abstract: In order to investigate the vibration and acoustic effect of foam sandwich composite reinforced structure in engineering application, a comparative test of vibration modes in air was carried out for the foam sandwich composite reinforced structure and the steel structure. The test results show that, compared the steel structure, the first three-order natural frequencies are twice higher for sandwich composite reinforced structure, and the foam sandwich composite reinforced structure can reduce the weight of the structure and improve the stiffness of the whole structure. Based on the layerwise theory, the modal test of the foam sandwich composite reinforced structure was simulated, the simulation results were consistent with the test results, which verified the accuracy of the simulation method. On this basis, the modal and frequency response of foam sandwich composite reinforced structure in air and fluid medium are simulated, and the effect of the size of reinforcement on the natural frequency of reinforced foam sandwich composite structure are analyzed, which can provide reference for engineering application.

Key words: foam, sandwich composite, reinforced structure, natural frequency, vibration and acoustic

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