复合材料科学与工程 ›› 2021, Vol. 0 ›› Issue (12): 5-11.DOI: 10.19936/j.cnki.2096-8000.20210727.031

• 基础研究 •    下一篇

高效弹性波波型转换复合材料设计研究

王恬, 杨雄伟*, 柴怡君, 耿谦, 李跃明   

  1. 西安交通大学 机械结构强度与振动国家重点实验室,西安710049
  • 收稿日期:2021-04-22 出版日期:2021-12-28 发布日期:2022-01-07
  • 通讯作者: 杨雄伟(1986-),男,博士,副教授,主要研究方向为波型转换超材料设计,op.yangxw@xjtu.edu.cn。
  • 作者简介:王恬(1996-),男,硕士研究生,主要研究方向为功能复合材料结构设计。
  • 基金资助:
    国家自然科学基金项目(11802220,11772251,U2033208);博士后基金项目(2019M663679,2020TQ0241);陕西省自然科学基金项目(2019JQ-293,2020JQ-003)

Composite materials design for high-efficiency elastic wave mode conversion

WANG Tian, YANG Xiong-wei*, CHAI Yi-jun, GENG Qian, LI Yue-ming   

  1. State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an 710049, China
  • Received:2021-04-22 Online:2021-12-28 Published:2022-01-07

摘要: 复合材料具有优异的力学性能和丰富的可设计性,在各领域得到了广泛的应用。各向异性超材料由于其独特的各向异性,可实现弹性波传播的超常操控,具有重要的工程应用和科学研究价值。为将二者相结合,以复合材料自身的各向异性为出发点,探索具有弹性波超常操控功能的复合材料设计新思路,针对高效波型转换这一超常现象,基于法布里珀罗干涉理论及复合材料经典层合板理论研究了其效率与单层板纤维铺设角度之间的关系,建立了波型转换复合材料超结构的设计方法,最终实现了可达89%的高效波型转换效率。

关键词: 复合材料, 波型转换, 各向异性, 法布里珀罗干涉理论

Abstract: Composite materials are widely used in various fields for their excellent mechanical performances, while anisotropic metamaterials have significant engineering applications and scientific values for the extraordinary manipulation of elastic waves. By combining the anisotropy of composite materials and the requirements for extraordinary wave manipulation, a novel idea was proposed which could offer a new insight into the realization of integrated structure and function. Aimed at high-efficiency elastic wave mode conversion, which is expected to serve as the significant mechanism for vibration and noise reduction, the relation with composite monolayer plate fiber laying angles was studied based on transmodal Fabry-Perot interference(TFPI) theory and composite materials classical laminated plate theory. Then the design method of composite meta-structure for mode conversion was established, with which high-efficiency mode conversion was achieved as high as 89%. The results show that the design method proposed is effective for composite materials design for elastic wave mode conversion.

Key words: composite materials, mode conversion, anisotropy, transmodal Fabry-Perot interference

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