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材料工程  2018, Vol. 46 Issue (4): 146-151    DOI: 10.11868/j.issn.1001-4381.2015.000282
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
玻纤增强聚丙烯复合材料的应变率敏感特性
鲁雄, 杨旭静, 段书用, 郑娟
湖南大学 汽车车身先进设计制造国家重点实验室, 长沙 410082
Strain Rate Sensitive Properties of Glass Fiber Reinforced Polypropylene Composites
LU Xiong, YANG Xu-jing, DUAN Shu-yong, ZHENG Juan
State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China
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摘要 采用层合热压实验法将玻璃纤维基毡与聚丙烯薄膜复合制成不同玻纤含量的玻纤增强聚丙烯(GF/PP)复合板材,在不同的加载速率下进行拉伸测试,研究GF/PP复合材料的应变率敏感特性,分析Burgers模型对该材料本构关系拟合预测的可行性。结果表明:GF/PP复合材料在低应变率范围内对应变率是敏感的,随应变率的增加,其断裂应力和抗拉强度增大;随玻璃纤维含量的增加,其所对应的应变率效应反而有所下降。同时,Burgers模型能够有效地拟合预测出该材料的拉伸应力-应变曲线,与实验曲线相比,进一步验证了GF/PP复合材料的应变率敏感特性及其变化趋势。
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鲁雄
杨旭静
段书用
郑娟
关键词 低应变率玻璃纤维聚丙烯Burgers模型应变率敏感特性    
Abstract:The glass fiber reinforced polypropylene (GF/PP) composite plate with different glass fiber contents was fabricated by the laminated hot-pressing experiment method using the glass fiber felt and polypropylene film, then tensile experiments were carried on under different loading rates. The strain rate sensitive properties of the composites were investigated, and the feasibility of the Burgers model fitting to predict the constitutive relation of the material was analyzed. The results show that the GF/PP composite in the low strain rates is sensitive to strain rate, with the increase of strain rate, the fracture stress and tensile strength increase, and with the increase of the glass fiber content, the strain rate effect decreases. Meanwhile, the Burgers model can effectively fit to predict the tensile stress-strain curves of the composites, then compared with the experimental curves, which further validates the strain rate sensitive properties of the GF/PP composites and its trend.
Key wordslow strain rate    glass fiber    polypropylene    Burgers model    strain rate sensitive property
收稿日期: 2015-03-14      出版日期: 2018-04-14
中图分类号:  TB332  
通讯作者: 杨旭静(1969-),男,博士,教授,主要从事汽车覆盖件冲压工艺设计、仿真与优化、汽车复合材料工艺与装备技术、模具设计制造及数控加工技术方面研究工作,E-mail:yangxujing@hnu.edu.cn     E-mail: yangxujing@hnu.edu.cn
引用本文:   
鲁雄, 杨旭静, 段书用, 郑娟. 玻纤增强聚丙烯复合材料的应变率敏感特性[J]. 材料工程, 2018, 46(4): 146-151.
LU Xiong, YANG Xu-jing, DUAN Shu-yong, ZHENG Juan. Strain Rate Sensitive Properties of Glass Fiber Reinforced Polypropylene Composites. Journal of Materials Engineering, 2018, 46(4): 146-151.
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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2015.000282      或      http://jme.biam.ac.cn/CN/Y2018/V46/I4/146
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