开孔CFRP复合材料层合板的损伤解析和实验探究

玻璃钢/复合材料 ›› 2019, Vol. 0 ›› Issue (1): 5-10.

• 基础研究 • 下一篇

开孔CFRP复合材料层合板的损伤解析和实验探究

孙振辉, 铁瑛^*, 李成, 侯玉亮

郑州大学机械工程学院,郑州450001

收稿日期:2018-04-28 出版日期:2019-01-28 发布日期:2019-01-28
通讯作者: 铁瑛(1978-),女,博士,副教授,硕士生导师,主要研究方向为复合材料损伤分析,tieying@zzu.edu.cn。
作者简介:孙振辉(1994-),男,硕士研究生,主要研究方向为复合材料损伤性能。
基金资助:
国家博士后科学基金面上资助项目(2016M602256);黄河水利科学研究院防汛抢险技术研究所开放基金(201607);河南省科技攻关项目(172102210001)

DAMAGE ANALYSIS AND EXPERIMENTAL STUDY OF OPEN-HOLE CFRP COMPOSITE LAMINATES

SUN Zhen-hui, TIE Ying^*, LI Cheng, HOU Yu-liang

School of Mechanical Engineering, Zhengzhou University, Zhengzhou 450001, China

Received:2018-04-28 Online:2019-01-28 Published:2019-01-28

摘要/Abstract

摘要： 采用解析计算和拉伸试验相结合的方法,对开孔CFRP复合材料板的孔边应力和损伤进行了研究。基于复变函数方法并结合Tsai-Hill失效准则,计算得到了层合板各单层的主应力分布和首次损伤载荷系数。为了测定层合板面内拉伸性能并对解析结果进行验证,基于ASTM D5766-07试验标准对CFRP层合板进行了拉伸试验。研究结果表明:当开孔CFRP层合板承受沿长轴方向拉伸载荷时,0°和±45°铺层为主承力层,且主应力σ₁最大值出现在与孔中心成65°～115°和245°～295°范围内;各层最小首次损伤载荷系数出现在65°~115°范围内,其中,45°层和-45°层的损伤载荷系数最小;当载荷达到初始损伤载荷时,层合板开始出现内部损伤和参数退化;拉伸试验后CFRP复合材料板试件损伤的形式主要为基体开裂和纤维断裂,损伤的区域在孔周边61°～90°和241°～270°范围内,试验结果与解析计算结果基本一致。

关键词: 解析计算, 拉伸试验, 损伤分析, 孔边应力

Abstract: In this paper, the hole-edge stress and damage of open-hole CFRP laminate plate were studied by means of analytical calculation and tensile test. Based on the complex variable function method and the Tsai-Hill failure criterion, the principal stress distribution and the first damage load coefficient of each layer of the laminate plate are calculated. In order to determine the in-plane tensile properties of the plate and verify the analytical results, tensile tests on the plate were carried out based on the ASTM D5766-07 test standard. The results show that 0 degree and ±45 degrees layers are the main bearing layers when the open-hole laminate plate is subjected to the tensile load along the long axis direction, and the maximum value of the principal stress, σ₁, occurs in the range of 65 to 115 degrees and 245 to 295 degrees along the center of the hole, the minimum first damage load coefficient of each layer is within the range of 65 to 115 degrees and the damage load coefficient of 45 and -45 degrees is the smallest. When the load reaches the initial damage load, the internal damage and the parameter degradation begin to occur. After the tensile test, the damage of the laminate plate is mainly based on the matrix cracking and the fiber fracture, the damage region is within the range of 61 to 90 degrees and 241 to 270 degrees around the hole, the results of the test are in agreement with the analytical results.

Key words: analytical calculation, tensile test, damage analysis, hole-edge stress

中图分类号:

TB332

孙振辉, 铁瑛, 李成, 侯玉亮. 开孔CFRP复合材料层合板的损伤解析和实验探究[J]. 玻璃钢/复合材料, 2019, 0(1): 5-10.

SUN Zhen-hui, TIE Ying, LI Cheng, HOU Yu-liang. DAMAGE ANALYSIS AND EXPERIMENTAL STUDY OF OPEN-HOLE CFRP COMPOSITE LAMINATES[J]. Fiber Reinforced Plastics/Composites, 2019, 0(1): 5-10.

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开孔CFRP复合材料层合板的损伤解析和实验探究

DAMAGE ANALYSIS AND EXPERIMENTAL STUDY OF OPEN-HOLE CFRP COMPOSITE LAMINATES

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