单向增强玻璃钢复合材料静/动态拉伸实验研究

刘子尚 杨喆 魏延鹏 蔡军爽 赵士忠 黄晨光

刘子尚, 杨喆, 魏延鹏, 蔡军爽, 赵士忠, 黄晨光. 单向增强玻璃钢复合材料静/动态拉伸实验研究[J]. 爆炸与冲击, 2019, 39(9): 093101. doi: 10.11883/bzycj-2018-0193
引用本文: 刘子尚, 杨喆, 魏延鹏, 蔡军爽, 赵士忠, 黄晨光. 单向增强玻璃钢复合材料静/动态拉伸实验研究[J]. 爆炸与冲击, 2019, 39(9): 093101. doi: 10.11883/bzycj-2018-0193
LIU Zishang, YANG Zhe, WEI Yanpeng, CAI Junshuang, ZHAO Shizhong, HUANG Chenguang. Static/dynamic tensiletest of unidirectional reinforced GFRP composites[J]. Explosion And Shock Waves, 2019, 39(9): 093101. doi: 10.11883/bzycj-2018-0193
Citation: LIU Zishang, YANG Zhe, WEI Yanpeng, CAI Junshuang, ZHAO Shizhong, HUANG Chenguang. Static/dynamic tensiletest of unidirectional reinforced GFRP composites[J]. Explosion And Shock Waves, 2019, 39(9): 093101. doi: 10.11883/bzycj-2018-0193

单向增强玻璃钢复合材料静/动态拉伸实验研究

doi: 10.11883/bzycj-2018-0193
基金项目: “十三五”国家重点研发计划(2016YFB1200403)
详细信息
    作者简介:

    刘子尚(1993- ),男,硕士研究生,zishangliu@163.com

    通讯作者:

    魏延鹏(1982- ),男,博士,副研究员,weiyanpeng@imech.ac.cn

  • 中图分类号: O343.7

Static/dynamic tensiletest of unidirectional reinforced GFRP composites

  • 摘要: 本文针对单向增强玻璃钢复合材料,进行了一系列静/动态拉伸试验,利用高速摄影与DIC相结合的方法,获得了材料不同方向、不同应变率的应力-应变曲线以及材料在不同方向上的动态失效应变,精确地描述了材料的静/动态拉伸及失效行为。实验结果表明,纤维增强方向在不同应变率(10−3、10、102 s−1)拉伸应力-应变曲线均存在一个刚度减小的刚度变化点N,变化后的Echanged分别为初始弹性模量Einitial的67.5%、39.0%、21.4%。此材料在不同应变率(10−3、10、102 s−1)拉伸情况下,纤维增强的方向1上强度最高(分别为608、967、1 123 MPa),方向2强度最低(分别为75、67、58 MPa),方向3强度较低(分别为90、151、221 MPa)。利用高速摄影与DIC相结合的方法,获得了100 s−1应变率下,不同铺层方向破坏时刻的动态失效参数(方向1~3的动态失效应变分别为0.267、0.078、0.099),可以更加精确地描述此单向增强玻璃钢复合材料的动态失效行为。
  • 图  1  中应变率材料试验机系统

    Figure  1.  Intermediate strain rate material testing machine

    图  2  动态拉伸试验夹具

    Figure  2.  Fixture for dynamic tensile test specimen

    图  3  高速摄影装备

    Figure  3.  High speed photographic equipment

    图  4  纤维铺层方向及试件切割方向

    Figure  4.  The layer directions of fibers and the cutting directions of specimens

    图  5  试件形状与尺寸 (单位:mm)

    Figure  5.  Size of experimental specimens (unit: mm)

    图  6  准静态拉伸实验

    Figure  6.  Quasi-static tensile test

    图  8  试件破坏图

    Figure  8.  Tography of fractured specimens

    图  7  典型工况下重复试验的应力-应变曲线

    Figure  7.  Stress-strain curves of repeated tests under typical working conditions

    图  9  动态拉伸过程试件形貌

    Figure  9.  Specimen morphology under dynamic tensile condition

    图  10  方向1动态拉伸全场应变分布

    Figure  10.  Strain field in direction 1 under dynamic tension condition

    图  11  方向1在100 s−1应变率下应力-应变曲线

    Figure  11.  Stress-strain curve of the direction 1 at 100 s−1 strain rate

    图  12  准静态拉伸不同方向应力-应变曲线

    Figure  12.  Stress-strain curves in different directions under quasi-static condition

    图  13  方向1不同应变率拉伸应力-应变曲线

    Figure  13.  Tensile stress-strain curves of the direction 1 under different strain rates

    图  15  方向3不同应变率下拉伸应力-应变曲线

    Figure  15.  Tensile stress-strain curves of the direction 3 under different strain rates

    图  14  方向2不同应变率下拉伸应力-应变曲线

    Figure  14.  Tensile stress-strain curves of the direction 2 under different strain rates

    图  16  方向1在100 s−1应变率下动态失效区域

    Figure  16.  Dynamic failure region in the direction 1 at 100 s−1 strain rate

    图  17  方向2在100 s−1应变率下动态失效区域

    Figure  17.  Dynamic failure region in the direction 2 at 100 s−1 strain rate

    图  18  方向3在100 s−1应变率下动态失效区域

    Figure  18.  Dynamic failure region in the direction 3 at 100 s−1 strain rate

    表  1  不同工况重复实验次数

    Table  1.   Times of repeated experiments under different conditions

    方向 实验重复次数
    准静态 10 s−1 100 s−1
    方向 1 3 3 3
    方向 2 3 3 3
    方向 3 3 3 3
    下载: 导出CSV

    表  2  不同应变率、不同方向的强度、工程失效应变及方向1刚度

    Table  2.   Tensile strength and engineering failure strain of different strain rates in different directions and the stiffness in 1 direction

    应变率 强度/MPa 方向 1 Einitial/GPa 方向 1 Echanged/GPa 失效应变
    方向 1 方向 2 方向 3 方向 1 方向 2 方向 3
    准静态 608 75 90 27.7 18.7 0.025 0.020 0.022
    10 s−1 967 67 151 35.1 13.7 0.066 0.011 0.043
    100 s−1 1 123 58 221 35.1 7.5 0.040 0.013 0.038
    下载: 导出CSV

    表  3  不同方向的动态失效应变及其它相关参数(应变率:100 s−1)

    Table  3.   Dynamic failure strain and other relevant parameters in different directions (strain rete: 100 s−1)

    方向 Einitial/GPa σf/MPa εf εeff
    1 27.7 1 123 0.040 0.267
    2 3.6 58 0.013 0.078
    3 4.1 221 0.038 0.099
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-06-01
  • 修回日期:  2018-10-16
  • 网络出版日期:  2019-08-25
  • 刊出日期:  2019-09-01

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