Shear constitutive relationship of unidirectional glass fiber reinforced epoxy composites under intermediate strain rate

被引：0
|
作者：
Wu J. [1 ]
Wang W. [1 ]
Li H. [1 ]
Zhang T. [1 ]
机构：
[1] China Ship Scientific Research Center, National Key Laboratory on Ship Vibration & Noise, Wuxi
来源：
Wu, Jian (wujian@cssrc.com.cn) | 2018年 / Beijing University of Aeronautics and Astronautics (BUAA)卷 / 35期
关键词：
Constitutive relationship; Intermediate strain rate; Parameters identification; Shear property; Unidirectional glass fiber reinforced epoxy composites;
D O I：
10.13801/j.cnki.fhclxb.20170601.001
中图分类号：
学科分类号：
摘要：
Angle-ply of [±45°]8s unidirectional glass fiber reinforced epoxy composites were made by vacuum assisted molding process. The shear properties under constant strain rate were researched by special equipment. Test strain rate was from 3×10-4 s-1 to 128.4 s-1. A shear rate-dependent constitutive model of unidirectional glass fiber reinforced epoxy composite under intermediate strain rate was established based on Khan-Huang model. The optimal parameters were identified by least square method and genetic algorithm. The results show shear properties of unidirectional glass fiber reinforced epoxy composite depends on strain rate and shear strength increases with strain rate. The ultimate strength increases by 35.5% at 128.4 s-1. Constitutive model established in this paper can accurately reflect the shear properties of unidirectional glass fiber composite, and can be used to predict shear properties under intermediate strain rate. © 2018, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.
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页码：304 / 310
页数：6
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