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材料工程  2018, Vol. 46 Issue (2): 134-141    DOI: 10.11868/j.issn.1001-4381.2016.000847
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
含切口复合材料层合板拉伸应变集中与失效分析
王刚, 贾普荣, 黄涛, 张龙
西北工业大学 力学与土木建筑学院, 西安 710129
Strain Concentration and Failure Analysis of Notched Composite Laminates Under Tensile Loading
WANG Gang, JIA Pu-rong, HUANG Tao, ZHANG Long
School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnical University, Xi'an 710129, China
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摘要 通过对圆形切口和长条形切口复合材料层合板试件进行拉伸实验,研究中心切口形状对层合板力学性能的影响。根据实验测得的应变分布规律确定切口引起的应变集中,并分析层合板的破坏过程。建立了基于连续刚度退化准则的渐进损伤模型,分析含切口试件的损伤扩展进程。结果表明,渐进损伤分析模型可准确描述含切口层合板的拉伸失效行为;长条形切口引起的应变集中系数较高,但切口附近的应变梯度更大;两种中心切口形式的复合材料层合板损伤进程有较大差异,但两者的拉伸强度较为接近。
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王刚
贾普荣
黄涛
张龙
关键词 复合材料层合板中心切口应变集中渐进损伤模型    
Abstract:The influence of different shapes of centre notches on the tensile mechanical behavior of composite laminates was investigated by tension tests of composite laminates with circular notch and oblong notch. The strain concentration and failure process of notched specimens around the notch were analyzed intuitively with the strain distribution rule obtained during the tension test. A progressive damage model based on continuous stiffness degradation criterion was also developed to investigate the damage propagation processes of notched composite laminates. The results indicate that the proposed progressive damage model can accurately describe the tensile failure of notched specimens; and the strain concentration factor induced by oblong notch is more remarkable compared to that induced by circular notch, but the strain gradient around the oblong notch is larger; while the damage processes of the two types of notched specimens are quite different, the tensile strengths of both notched specimens are close.
Key wordscomposite laminate    centre notch    strain concentration    progressive damage model
收稿日期: 2016-07-11      出版日期: 2018-02-01
中图分类号:  O34  
  TB332  
通讯作者: 黄涛(1976-),男,副教授,博士,主要从事复合材料及其结构的力学行为研究,联系地址:陕西省西安市长安区西北工业大学力学与土木建筑学院(710129),huangt@nwpu.edu.cn     E-mail: huangt@nwpu.edu.cn
引用本文:   
王刚, 贾普荣, 黄涛, 张龙. 含切口复合材料层合板拉伸应变集中与失效分析[J]. 材料工程, 2018, 46(2): 134-141.
WANG Gang, JIA Pu-rong, HUANG Tao, ZHANG Long. Strain Concentration and Failure Analysis of Notched Composite Laminates Under Tensile Loading. Journal of Materials Engineering, 2018, 46(2): 134-141.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.000847      或      http://jme.biam.ac.cn/CN/Y2018/V46/I2/134
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