一种考虑纤维桥接影响的三线性内聚力模型

doi:10.19936/j.cnki.2096-8000.20220828.031

复合材料科学与工程 ›› 2023, Vol. 0 ›› Issue (3): 27-33.DOI: 10.19936/j.cnki.2096-8000.20220828.031

一种考虑纤维桥接影响的三线性内聚力模型

旷佳^1,2, 蒋亚琴³, 汪舟^1,2, 杨莹^1,2*, 甘进⁴, 王晓丽^1,2, 曾飞^1,2, 谭理成^1,2

1.武汉理工大学汽车工程学院,武汉 430070;
2.现代汽车零部件技术湖北省重点实验室,武汉 430070;
3.上海航天精密机械研究所,上海 201600;
4.武汉理工大学船海与能源动力工程学院,武汉 430063

收稿日期:2022-03-18 出版日期:2023-03-28 发布日期:2023-04-28
通讯作者: 杨莹(1983—),女,博士,讲师,主要从事汽车零件疲劳损伤方面的研究,yycx2626@163.com。
作者简介:旷佳(1996—),男,在读硕士,主要从事复合材料损伤方面的研究。
基金资助:
国家自然科学基金面上项目(51879208)

A trilinear cohesive model considering the effect of fiber bridging

KUANG Jia^1,2, JIANG Yaqin³, WANG Zhou^1,2, YANG Ying^1,2*, GAN Jin⁴, WANG Xiaoli^1,2, ZENG Fei^1,2, TAN Licheng^1,2

1. School of Automotive Engineering, Wuhan University of Technology, Wuhan 430070, China;
2. Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan 430070, China;
3. Shanghai Spaceflight Precision Machinery Institute, Shanghai 201600, China;
4. School of Marine and Energy Power Engineering, Wuhan University of Technology, Wuhan 430063, China

Received:2022-03-18 Online:2023-03-28 Published:2023-04-28

摘要/Abstract

摘要： 为了实现碳纤维层合板DCB试件Ⅰ型分层扩展仿真分析,学术界常采用内聚力模型建立分层扩展模型。但是目前各大商业软件上嵌入的双线性内聚力模型只能实现无纤维桥接或少量纤维桥接下的碳纤维DCB试件Ⅰ型分层扩展。现有研究发现,纤维桥接是碳纤维DCB试件分层扩展中不可忽视的现象。为此本文从双线性内聚力模型出发,开发了一种能够描述大范围纤维桥接的三线性内聚力模型。该模型基于两个双线性内聚力模型构建,两个双线性模型分别用于描述分层起始和纤维桥接。通过与实验结果和双线性内聚力模型数值仿真结果比较,验证了该模型的有效性和优越性。

关键词: DCB试件, 内聚力模型, 纤维桥接, 复合材料

Abstract: In order to realize the simulation analysis of type Ⅰ layered expansion of carbon fiber laminate DCB specimens, the academia often uses the cohesive force model to establish a layered expansion model. However, the bilinear cohesive model embedded in the major commercial software can only realize the type Ⅰ layered expansion of carbon fiber DCB specimens without fiber bridging or with a small amount of fiber bridging. Existing studies have found that fiber bridging is a phenomenon that cannot be ignored in the delamination expansion of carbon fiber DCB specimens. Therefore, this paper develops a trilinear cohesion model that can describe the large-scale fiber bridging based on the bilinear cohesive model. The model is constructed based on two bilinear cohesion models, which are used to describe delamination initiation and fiber bridging, respectively. The validity and superiority of the model are verified by comparing with the experimental results and the numerical simulation results of the bilinear cohesion model.

Key words: DCB specimens, cohesive zone model, fiber bridging, composites

中图分类号:

TB332

旷佳, 蒋亚琴, 汪舟, 杨莹, 甘进, 王晓丽, 曾飞, 谭理成. 一种考虑纤维桥接影响的三线性内聚力模型[J]. 复合材料科学与工程, 2023, 0(3): 27-33.

KUANG Jia, JIANG Yaqin, WANG Zhou, YANG Ying, GAN Jin, WANG Xiaoli, ZENG Fei, TAN Licheng. A trilinear cohesive model considering the effect of fiber bridging[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(3): 27-33.

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一种考虑纤维桥接影响的三线性内聚力模型

A trilinear cohesive model considering the effect of fiber bridging

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