端部诱导孔对Al-CFRP混合薄壁管轴向压缩性能的影响

复合材料科学与工程 ›› 2021, Vol. 0 ›› Issue (2): 65-71.

端部诱导孔对Al-CFRP混合薄壁管轴向压缩性能的影响

王凯¹, 马其华^1,2,3*, 查一斌¹

1.上海工程技术大学机械与汽车工程学院,上海201620;
2.东华大学纤维材料改性国家重点实验室,上海201620;
3.东华大学高性能纤维及制品教育部重点实验室,上海201620

收稿日期:2020-05-27 出版日期:2021-02-28 发布日期:2021-03-10
通讯作者: 马其华(1980-),男,博士在读,副教授,主要从事复合材料汽车轻量化方面的研究,mqh0386@sues.edu.cn。
作者简介:王凯(1996-),男,硕士研究生,主要从事复合材料汽车轻量化方面的研究。
基金资助:
纤维材料改性国家重点实验室开放课题(KF1826);中央高校基本科研业务费专项资金资助(2232018A3-02)

THE INFLUENCE OF END INDUCED HOLES ON AXIAL COMPRESSION
PERFORMANCE OF Al-CFRP COMPOSITE THIN-WALLED TUBE

WANG Kai¹, MA Qi-hua^1,2,3*, ZHA Yi-bin¹

1. School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China;
2. State Key Laboratory for Modification of Chemical Fibers and Polymer, Donghua University, Shanghai 201620, China;
3. Key Laboratory of High Performance Fibers & Products, Ministry of Education, Donghua University, Shanghai 201620, China

Received:2020-05-27 Online:2021-02-28 Published:2021-03-10

摘要/Abstract

摘要： 为了研究不同开孔形式对Al-CFRP管轴向压缩性能的影响,本文基于初始峰值、吸能总量和压溃效率,针对不同端部开孔形式的铝-碳纤维复合材料混合管(Al-CFRP管)进行了准静态轴向压缩试验,同时也进行了纯铝管(Al管)和纯碳纤维增强树脂基复合材料管(CFRP管)的对照试验,并采用结合压溃效率及吸能总量的加权组合形式的评价指标W对薄壁管轴向压缩性能进行综合评价。结果表明:Al-CFRP管具有更稳定的失效变形模式;相比未提升轴向压缩性能的端部开孔纯Al管和纯CFRP管,端部开孔Al-CFRP管的压溃效率均有提升,其吸能总量随着开孔数的增加先降低再升高,其中开4个孔对Al-CFRP管的轴压性能提升作用最为明显,对比未开孔Al-CFRP管,其吸能总量和压溃效率分别提升了4.2%和28.3%,同时其加权评价指标W_AC4为1.16,也明显高于基准值。

关键词: 碳纤维复合材料, 混合薄壁管, 轴向压缩, 端部开孔, 吸能特性

Abstract: In order to study the axial compression performance and fracture mode of Al-CFRP tubes with different end induced holes, this paper based on initial peak value, total energy absorption and crushing efficiency, the quasi-static axial compression tests were carried out for aluminum-carbon fiber composite tubes (Al-CFRP tubes) with different end induced holes, and the contrast tests for aluminum tubes (Al tubes) and carbon fiber reinforced resin matrix plastic tubes (CFRP tubes) were also carried out, and comprehensive evaluation of axial compression performance of thin-walled tube by using the evaluation index W of the weighted combination form combining crushing efficiency and total energy absorption. The results show that the Al-CFRP tubes have a more stable failure mode; compared with pure Al tubes and pure CFRP tubes with no improvement in axial compression performance, the end induced holes improve the crushing efficiency of Al-CFRP tubes, and the total energy absorption decreases first and then increases with the increase of the number of holes, among which the four holes have the most obvious effect on the axial compression performance of the Al-CFRP tubes; compared with the Al-CFRP tubes without holes, its total energy absorption and crushing efficiency are increased by 4.2% and 28.3%, respectively, and its weighted evaluation index W_AC4 is 1.16, which is also significantly higher than the reference value.

Key words: carbon fiber composite, composite thin-walled tube, axial compression, end induced holes, energy absorption characteristic

中图分类号:

TB332

王凯, 马其华, 查一斌. 端部诱导孔对Al-CFRP混合薄壁管轴向压缩性能的影响[J]. 复合材料科学与工程, 2021, 0(2): 65-71.

WANG Kai, MA Qi-hua, ZHA Yi-bin. THE INFLUENCE OF END INDUCED HOLES ON AXIAL COMPRESSION
PERFORMANCE OF Al-CFRP COMPOSITE THIN-WALLED TUBE[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(2): 65-71.

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