复合材料L型接头的损伤与破坏模式研究

玻璃钢/复合材料 ›› 2019, Vol. 0 ›› Issue (3): 16-20.

复合材料L型接头的损伤与破坏模式研究

石好男, 王继辉^*, 张桂明

武汉理工大学材料科学与工程学院,武汉430070

收稿日期:2018-06-28 出版日期:2019-03-28 发布日期:2019-03-28
通讯作者: 王继辉(1962-),博士,教授/博导,主要从事聚合物基复合材料结构方面的研究,jhwang@whut.edu.cn。
作者简介:石好男(1992-),硕士研究生,主要从事树脂基复合材料结构设计方面的研究。
基金资助:
中央高校基本科研业务费资助(185201001)

THE RESEARCH ON DAMAGE AND FAILURE MODES OF COMPOSITE L-JOINT

SHI Hao-nan, WANG Ji-hui^*, ZHANG Gui-ming

School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China

Received:2018-06-28 Online:2019-03-28 Published:2019-03-28

摘要/Abstract

摘要： 建立了渐进损伤模型模拟接头失效,模型中采用改进的Hashin损伤准则及Apalak刚度退化模拟L筋条及蒙皮的损伤和渐进失效,胶层失效通过内聚力单元进行模拟,并预估L型接头的最终破坏载荷。结果表明:建立的渐进失效模型可以较准确地模拟L型接头的拉伸破坏过程,L型接头的失效主要包括胶层的开裂、填充区底部基体的拉伸破坏和蒙皮层的分层破坏。

关键词: 复合材料, L型接头, 渐进失效, Cohesive单元

Abstract: The progressive damage model was established to simulate failure of a carbon fiber reinforced polymer matrix composite L-joint. A modified form of Hashin Damage and Apalak stiffness degradation were adopted to damage evolution of composite laminates, and cohesive element was adopted to simulate interlaminar damage initiation and the final failure were predicted. The results show that the progressive failure model can accurately simulate the tensile failure process of the L-joint, and the failure type mainly includes the crack of glue layer, the tensile failure of the matrix at the bottom of filler area and the delamination failure of the laminates.

Key words: composite, L-joints, progressive failure, cohesive element

中图分类号:

TB332

石好男, 王继辉, 张桂明. 复合材料L型接头的损伤与破坏模式研究[J]. 玻璃钢/复合材料, 2019, 0(3): 16-20.

SHI Hao-nan, WANG Ji-hui, ZHANG Gui-ming. THE RESEARCH ON DAMAGE AND FAILURE MODES OF COMPOSITE L-JOINT[J]. Fiber Reinforced Plastics/Composites, 2019, 0(3): 16-20.

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