湿热环境下不同挖补构型层合板振动特性分析

doi:10.19936/j.cnki.2096-8000.20230928.002

复合材料科学与工程 ›› 2023, Vol. 0 ›› Issue (9): 13-20.DOI: 10.19936/j.cnki.2096-8000.20230928.002

湿热环境下不同挖补构型层合板振动特性分析

赵耀斌¹, 单金洋¹, 崔开心¹, 卢翔^2*

1.中国民航大学航空工程学院,天津300300;
2.中国民航大学交通科学与工程学院,天津300300

收稿日期:2022-07-25 出版日期:2023-09-28 发布日期:2023-10-20
通讯作者: ^*卢翔(1969—),男,博士,教授,主要从事民机复合材料结构损伤与修理方面的研究,xlu@cauc.edu.cn。
作者简介:赵耀斌(1997—),男,硕士研究生,主要从事飞行器维修设计方面的研究。
基金资助:
国家自然科学基金-民用飞机持续安全性分析技术研究(U2033209);天津市研究生科技创新项目-民航专项(2021YJSO2S13);天津市教委科研计划项目(2021KJ054)

Vibration characteristics of laminates with different repair configurations in hygrothermal environment

ZHAO Yaobin¹, SHAN Jinyang¹, CUI Kaixin¹, LU Xiang^2*

1. College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China;
2. College of Transportation Science and Engineering, Civil Aviation University of China, Tianjin 300300, China

Received:2022-07-25 Online:2023-09-28 Published:2023-10-20

摘要/Abstract

摘要： 通过理论推导和有限元仿真探究了自由边界条件下,不同损伤深度阶梯挖补修理层合板在不同温度和含湿量情况下的振动特性。基于Voklkersen胶接接头模型并考虑湿热效应的影响得出修理层合板的运动平衡方程,通过推导得到修理层合板的振动特征方程。在ABAQUS软件中建立了不同挖补深度层合板的有限元模型并通过试验验证,在不同温度、含湿量条件下,分析挖补层数、附加铺层数和搭接长度对振动特性的影响。研究结果表明:修理层合板固有频率增幅随挖补层数的增加而增加;含有附加铺层的层合板可以更好地维持固有频率,且两层附加补片的效果优于一层附加补片的效果;非穿透修理构型层合板的固有频率随搭接长度增加而增加;对于穿透修理构型层合板,其固有频率更易受到温度、含湿量和搭接长度影响,在高温干态环境(T=100 ℃、C=0%)下,当搭接长度在1.5~9 mm之间变化时,搭接长度为4 mm的穿透修理构型层合板固有频率最低。

关键词: 阶梯挖补修理, 复合材料层合板, 不同挖补深度, 搭接长度, 湿热效应, 模态试验

Abstract: Through theoretical derivation and finite element simulation, the vibration characteristics of step-lap repair laminated plates with different damage depths at different temperatures and moisture contents under free boundary conditions are explored. Based on Voklkersen bonding joint model and considering the influence of damp heat effect, the motion balance equation of the repaired laminate is obtained, and the vibration characteristic equation of the repaired laminate is derived. The finite element model of laminated plates with different patching depth is established in ABAQUS software and verified by experiments. Under the conditions of different temperatures and moisture contents, the effects of the number of patching layers, the number of additional layers and the lap length on the vibration characteristics are analyzed. The results show that the increase of natural frequency of repaired laminates increases with the increase of the number of repaired layers; laminates with additional layers can better maintain the natural frequency, and the effect of two layers of additional patches is better than that of one layer; the natural frequency of laminates with non-penetrating repair configuration increases with the increase of lap length; for the penetration repair configuration, its natural frequency is more easily affected by temperature, moisture content and lap length. In the high-temperature dry environment (T=100 ℃, C=0%), when the lap length changes from 1.5 mm to 9 mm, the penetration repair configuration with a lap length of 4 mm has the lowest natural frequency.

Key words: step-lap repair, composite laminates, different repair depth, lap length, hygrothermal effect, modal experiments

中图分类号:

TB332

赵耀斌, 单金洋, 崔开心, 卢翔. 湿热环境下不同挖补构型层合板振动特性分析[J]. 复合材料科学与工程, 2023, 0(9): 13-20.

ZHAO Yaobin, SHAN Jinyang, CUI Kaixin, LU Xiang. Vibration characteristics of laminates with different repair configurations in hygrothermal environment[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(9): 13-20.

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湿热环境下不同挖补构型层合板振动特性分析

Vibration characteristics of laminates with different repair configurations in hygrothermal environment

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