碳纤维增强复合材料层合板的抗冲击性能

李汶蔚; 梅杰; 黄威

doi:10.11858/gywlxb.20190822

碳纤维增强复合材料层合板的抗冲击性能

doi: 10.11858/gywlxb.20190822

李汶蔚^1,,
梅杰²,
黄威^2,*, ,

1.
中国原子能科学研究院，北京　102413
2.
华中科技大学船舶与海洋工程学院，湖北武汉　430074

基金项目: 国家自然科学基金(11802100)

详细信息

作者简介:
李汶蔚（1985－），男，硕士，主要从事爆炸物理研究. E-mail：wenweili@gmail.com

通讯作者:
黄　威（1987－），男，博士，讲师，主要从事冲击动力学研究. E-mail：weihuang@hust.edu.cn

中图分类号: O347
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出版历程
- 收稿日期: 2019-08-16
- 修回日期: 2019-09-06
- 发布日期: 2019-11-25

Impulsive Resistance of the CFRP/Epoxy Laminate

LI Wenwei^1
,,
MEI Jie²,
HUANG Wei^{2,*
, ,}

1.
China Institute of Atomic Energy, Beijing 102413, China
2.
School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China

摘要

摘要: 为了研究碳纤维增强环氧树脂基复合材料层合梁的抗冲击性能，应用金属泡沫弹撞击加载的方式，结合高速摄像机，对等厚度层合梁结构的动态响应和失效行为展开实验研究。研究不同冲击加载强度对层合梁的动态失效过程、变形轮廓、中点变形、失效模式及能量耗散比的影响。结果表明：随着冲击强度的增加，中点变形响应速度随之增加，层合梁变形模式由整体变形转变为局部变形，且局部化效应随之增加，并伴随严重的基体和纤维断裂失效。层合梁能量耗散比随冲击强度的增加而增加，并展现出与结构失效模式直接关联的弹性变形、中心断裂和完全失效3个不同阶段。
- 冲击载荷 /
- 碳纤维复合材料 /
- 动态响应 /
- 失效模式
Abstract: To investigate the impulsive resistance property of the carbon fiber reinforced polymer and epoxy (CFRP/Epoxy) laminate, the dynamic response and failure behaviors of the CFRP/Epoxy laminate beam subjected to varying impulsive intensities were experimental studied. The impulsive loading was generated by the impact of aluminum foam projectile which was fired by a one-stage light gas gun system. To capture the dynamic process of the impacts, a high-speed camera was employed. The impulsive resistance property in terms of dynamic failures, deformation profiles, midpoint deflections, failure modes and specific energy absorption was analyzed by considering the intensity effects of the impulsive loading. The results indicate that the rate of midpoint deflection response increases with the increasing impulses. The deformation regime of the composite beam changes from structural deformation to local deformation with the increasing impulses, accompanying with server matrix and fiber damages. With the impulse increasing, the specific energy absorption (SEA) undergoes three stages which are directly related to the failure modes of the laminates.
- impulsive loading /
- carbon fiber reinforced polymer /
- dynamic response /
- failure mode

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图 1 高速冲击加载实验装置(a)及固定夹具装置(b)示意图（单位：mm）

Figure 1. Schematics of (a) the experimental set-up and (b) the clamped device (Unit: mm)

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图 2 CFRP/Epoxy层合板梁在$\overline I $ = 0.67冲击下的动态响应过程

Figure 2. Sequence of high-speed photographs of the CFRP/Epoxy laminate subjected to $\overline I $ = 0.67

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图 3 CFRP/Epoxy层合板梁在$\overline I $ = 0.67冲击下的变形轮廓(a)和中点变形(b)

Figure 3. Histories of deformation profiles (a), and midpoint deflection (b) of the CFRP/Epoxy laminate subjected to $\overline I $ = 0.67

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图 4 CFRP/Epoxy层合板梁在$\overline I $ = 0.67冲击下的失效模式

Figure 4. Failure mode of the CFRP/Epoxy laminate subjected to $\overline I $ = 0.67

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图 5 不同冲击强度下层合板动态变形和失效

Figure 5. Dynamic deformation and failure of CFRP/Epoxy laminate under different impulses

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图 6 层合板在不同冲击强度下的中点变形(a)和变形轮廓线(b)

Figure 6. Midpoints-deflection histories (a) and deformation profiles (b) of CFRP laminates under impulsive loadings

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图 7 CFRP/Epoxy层合板失效模式与能量耗散比的关系

Figure 7. Failure modes versus specific energy absorption of the CFRP/Epoxy laminate

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