超声导波在CFRP层合板中的传播特性及仿真实现

doi:10.19936/j.cnki.2096-8000.20220528.002

复合材料科学与工程 ›› 2022, Vol. 0 ›› Issue (5): 12-20.DOI: 10.19936/j.cnki.2096-8000.20220528.002

超声导波在CFRP层合板中的传播特性及仿真实现

李俊^1,2, 宋春生^1,2*, 李民辉¹, 刘雨¹, 魏子航¹

1.武汉理工大学机电工程学院,武汉 430070;
2.武汉理工大学先进材料制造装备与技术研究院,武汉 430070

收稿日期:2021-08-16 出版日期:2022-05-28 发布日期:2022-07-19
通讯作者: 宋春生(1981-),男,博士,教授,主要从事磁悬浮隔振、复合材料方面的研究,song_chsh@163.com。
作者简介:李俊(1997-),男,硕士,主要从事碳纤维复合材料方面的研究。
基金资助:
国家自然科学基金项目(U1537103);中央高校基本科研业务费专项资金资助(WUT:2018Ⅲ072GX)

Propagation characteristics and simulation implementation of ultrasonic guided waves in CFRP laminates

LI Jun^1,2, SONG Chun-sheng^1,2*, LI Min-hui¹, LIU Yu¹, WEI Zi-hang¹

1. School of Mechanical and Electrical Engineering, Wuhan University of Technology, Wuhan 430070, China;
2. Institute of Advanced Materials Manufacturing Equipment and Technology, Wuhan University of Technology, Wuhan 430070, China

Received:2021-08-16 Online:2022-05-28 Published:2022-07-19

摘要/Abstract

摘要： 本文采用数值和有限元仿真相结合的方法研究超声导波在复合材料层合板中的传播特性。首先理论分析波频散方程的建立过程,引入了复合材料中体波传播的差异性。然后对导波传播进行数值分析,最后建立有限元仿真模型,结合数值结果验证仿真模型的正确性和有效性。研究表明:慢度和偏斜角能很好地表征体波的传播特性;相比于其他铺层频散曲线,单向层合板对称模态波在纵波速度上方出现无频散区域;复合材料层合板中导波传播的相速度曲线和群速度曲线不一致,层合板均质刚度转换矩阵分量对波传播影响较大;数值和有限元相结合为导波在复合材料结构健康监测和无损检测领域的发展提供重要帮助。

关键词: 复合材料, 导波, 体波, 频散曲线, 群速度

Abstract: In this paper, the method of combining numerical and finite element simulation is used to study the propagation characteristics of ultrasonic guided waves in composite laminates. Firstly, the establishment process of wave dispersion equation is theoretically analyzed, and the difference of bulk wave propagation in composite materials is introduced. Then the guided wave propagation is numerically analyzed, and finally the finite element simulation model is established, and the numerical results are used to verify the correctness and effectiveness of the simulation model. The research shows that slowness and deflection angle can well characterize the propagation characteristics of bulk waves, compared with other layer dispersion curves, the symmetrical modal wave of unidirectional laminates has a dispersion-free region above the longitudinal wave velocity, the phase velocity curve and group velocity curve of guided wave propagation in composite laminates are in consistent, and the homogeneous stiffness transformation (HST) matrix component of the laminate has a greater impact on the wave propagation, the combination of numerical value and finite element provides important help for the development of guided waves in the field of composite structure health monitoring and nondestructive testing.

Key words: composite materials, guided wave, bulk wave, dispersion curves, group velocity

中图分类号:

TB332

李俊, 宋春生, 李民辉, 刘雨, 魏子航. 超声导波在CFRP层合板中的传播特性及仿真实现[J]. 复合材料科学与工程, 2022, 0(5): 12-20.

LI Jun, SONG Chun-sheng, LI Min-hui, LIU Yu, WEI Zi-hang. Propagation characteristics and simulation implementation of ultrasonic guided waves in CFRP laminates[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(5): 12-20.

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超声导波在CFRP层合板中的传播特性及仿真实现

Propagation characteristics and simulation implementation of ultrasonic guided waves in CFRP laminates

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