复合材料科学与工程 ›› 2023, Vol. 0 ›› Issue (4): 14-20.DOI: 10.19936/j.cnki.2096-8000.20230428.002

• 基础研究 • 上一篇    下一篇

SHPB试验中碳纤维增强复合材料试样的尺寸效应数值模拟分析

温智超1, 屈美娇1,2, 李哲旭1, 李孟奇1, 董秋雨1, 孙戬1*   

  1. 1.西安工程大学 机电工程学院,西安710048;
    2.空军工程大学 等离子体动力学重点实验室,西安710038
  • 收稿日期:2022-03-02 出版日期:2023-04-28 发布日期:2023-08-22
  • 通讯作者: 孙戬(1984—),男,博士,讲师,主要从事复合材料力学、纺织机械设计及优化方面的研究,sunjian@xpu.edu.cn。
  • 作者简介:温智超(2000—),男,学士,主要从事纤维增强复合材料激光冲击动态力学响应方面的研究。
  • 基金资助:
    装备预研重点实验室基金项目(614220220200206);湖南省自然科学基金科教联合项目(2020JJ7079)

Numerical simulation of size effect of carbon fiber reinforced composites in SHPB test

WEN Zhichao1, QU Meijiao1,2, LI Zhexu1, LI Mengqi1, DONG Qiuyu1, SUN Jian1*   

  1. 1. School of Mechanical and Electrical Engineering, Xi’an Polytechnic University, Xi’an 710048, China;
    2. Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University, Xi’an 710038, China
  • Received:2022-03-02 Online:2023-04-28 Published:2023-08-22

摘要: 霍普金森压杆(Split Hopkinson Pressure Bar,SHPB)试验是研究中高应变率载荷下材料压缩性能的重要手段之一。本文采用ABAQUS仿真,研究碳纤维增强树脂基复合材料在SHPB试验中的尺寸效应,探究不同撞击速度、撞击方向和试样尺寸对试样应力的影响规律。结果表明:沿纤维方向撞击试样时,试样应力受试样压缩方向长度影响不大,受撞击速度影响较大,且试样尺寸越小,影响越明显;垂直于纤维方向撞击试样时,试样压缩方向长度和撞击速度对试样应力均有较大影响,随试样尺寸的减小和撞击速度的增大,试样应力呈增大趋势。

关键词: 碳纤维增强复合材料, 分离式霍普金森压杆, ABAQUS仿真, 尺寸效应

Abstract: Split Hopkinson Pressure Bar (SHPB) experiment is one of the important means to study the compressive properties of materials under medium and high strain rates. In this paper, ABAQUS simulation was used to study the size effect of carbon fiber reinforced resin matrix composites in Hopkinson pressure bar experiment. The effects of different impact velocities, impact directions and sample sizes on the stress of the samples were investigated. The results show that when the sample is impacted along the fiber direction, the stress of the sample is not affected by the length of the compression direction, but is greatly affected by the impact velocity, and the smaller the sample size is, the more obvious the effect is. When the specimen is impacted perpendicular to the fiber direction, both the compression direction length and the impact velocity have great influence on the stress of the specimen. The stress of the specimen increases with the decrease of the specimen size and the increase of the impact velocity.

Key words: carbon fiber reinforced composite materials, separated hopkinson pressure bar, ABAQUS simulation, size effect

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