复合材料科学与工程 ›› 2020, Vol. 0 ›› Issue (3): 66-69.

• 基础研究 • 上一篇    下一篇

复合材料加筋圆柱壳的低频声散射特性研究

王晓强   

  1. 海装武汉局驻武汉第二军事代表室,武汉430064
  • 收稿日期:2019-11-04 出版日期:2020-03-28 发布日期:2020-03-28
  • 作者简介:王晓强(1981-),男,博士,工程师,主要从事复合材料结构设计方面的研究,wxq_wuhan@163.com。

THE ANALYSIS OF LOW FREQUENCY ACOUSTIC SCATTERING CHARACTERISTICS OF COMPOSITE STIFFENED CYLINDRICAL SHELLS

WANG Xiao-qiang   

  1. No.2 Military Representatives Office of Naval in Wuhan,Wuhan 430064,China
  • Received:2019-11-04 Online:2020-03-28 Published:2020-03-28

摘要: 采用有限元/无限元相结合的方法对复合材料加筋圆柱壳以及金属加筋圆柱壳低频声散射特性进行了仿真分析。计算了不同波数情况下加筋圆柱壳和非加筋圆柱壳的散射情况,其中加筋情况分别采用了两种处理方法,包括梁单元建模与壳单元建模,结果表明加强筋的建模方法对于计算结果产生了一定影响,在一些频率点甚至十分显著。

关键词: 复合材料, 有限元, 无限元, 声散射, 目标强度

Abstract: The low frequency acoustic scattering characteristics of composite stiffened cylindrical shell and metal stiffened cylindrical shell are calculated and analyzed by using the finite element/infinite element method. In this paper, the acoustic scattering of stiffened cylindrical shells and non-stiffened cylindrical shells with different wave numbers are calculated, and two methods are used for stiffened cylindrical shells, including beam element modeling and shell element modeling. The results show that the modeling method of stiffener has some influence on the calculation accuracy, and it is even significant at some frequency points.

Key words: composite, finite element method, infinite element, sound scattering, target strength

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