玻璃钢/复合材料 ›› 2019, Vol. 0 ›› Issue (8): 5-10.

• 基础研究 •    下一篇

基于内聚力模型的CFRP层合板胶接结构力学行为研究

朱兆一1,2,李晓文1,2*,李妍1,2,熊云峰1,2   

  1. 1.集美大学轮机工程学院,厦门361021;
    2.福建省船舶与海洋工程重点实验室,厦门361021
  • 收稿日期:2018-11-21 出版日期:2019-08-28 发布日期:2019-08-28
  • 通讯作者: 李晓文(1986-),女,工学博士,讲师,主要从事船舶轻量化方面的研究,lxwaza@163.com。
  • 作者简介:朱兆一(1987-),男,工学硕士,实验师,主要从事船用复合材料结构设计优化方面的研究。
  • 基金资助:
    国家自然科学基金(51609101);福建省自然科学基金(2018J05090,2017J01487,2016J01249,2018J01493);福建省教育厅中青年教师教育科研项目(JAT170315,JAT170314)

MECHANICAL BEHAVIOR OF ADHESIVELY BONDED CFRP LAMINATES BASED ON COHESIVE ZONE MODEL

ZHU Zhao-yi1,2, LI Xiao-wen1,2*, LI Yan1,2, XIONG Yun-feng1,2   

  1. 1.School of Marine Engineering, Jimei University, Xiamen 361021, China;
    2.Fujian Provincial Key Laboratory for Naval Architecture and Ocean Engineering, Xiamen 361021, China
  • Received:2018-11-21 Online:2019-08-28 Published:2019-08-28

摘要: 面对船舶轻量化的发展需求,碳纤维增强复合材料和胶接技术受到了船舶行业的广泛关注。CFRP层合板胶接结构是融合碳纤维增强复合材料和胶接技术的一种典型结构形式,其力学行为与船体结构的安全性密切相关。采用力学实验和有限元仿真相结合的方法,通过建立复合材料胶接结构的几何模型、理论模型和有限元模型,研究了CFRP层合板胶接结构的极限承载能力和损伤失效行为。结果表明:基于内聚力模型的数值模拟结果与力学实验的吻合度较高,能够有效区分线性段和非线性段;复合材料结构的胶接区域是CFRP层合板单搭接结构的薄弱环节;CFRP层合板胶接结构的损伤破坏形式较多,在胶接区同时存在被粘物损伤、胶层失效和界面失效;本文工作为复杂形式的FRP胶接结构的力学特性研究提供了一种参考。

关键词: 内聚力模型, CFRP, 力学行为, 失效模式

Abstract: Since light weight is desirable for the development of ships, carbon fiber reinforced composite materials and bonding technology have received widespread attention from the shipbuilding industry. The CFRP laminate bonding structure combining carbon fiber reinforced plastic and bonding technology is a typical form, and its mechanical behavior is vital to the safety of ship structure. Based on the mechanical experiments and finite element simulation, the geometrical model, theoretical model and finite element model of the CFRP laminate bonding structure were built, and its ultimate bearing capacity and damage behavior were investigated. The results show that the numerical simulation results using the cohesive zone model are in good agreement with the mechanical tests, which can effectively distinguish the linear segment from the nonlinear one. The bonding region is the weak link of the CFRP laminate single-lap structure. The failure behavior of CFRP laminated adhesive plate is complicated, and there are various failure modes such as cohesive failure, adhesion failure and adherence failure in the bonding area. This work is useful for the study of the mechanical properties of complex FRP bonded structures.

Key words: cohesive zone model, CFRP, mechanical behavior, failure mode

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