复合材料科学与工程 ›› 2024, Vol. 0 ›› Issue (7): 23-30.DOI: 10.19936/j.cnki.2096-8000.20240728.003

• 基础研究 • 上一篇    下一篇

一种考虑应变率的复合材料动态压缩响应预测模型

文劲钧1, 屈美娇1*, 沈永鳌2, 李孟奇1, 宋雨恒1, 朱瀚锐1   

  1. 1.西安工程大学 机电工程学院,西安 710048;
    2.中国航发西安动力控制科技有限公司,西安 710077
  • 收稿日期:2024-02-01 出版日期:2024-07-28 发布日期:2024-08-08
  • 通讯作者: 屈美娇(1990—),女,博士,副教授,硕士生导师,研究方向为航空发动机整机结构振动及其优化、复合材料无损检测等,qmj@xpu.edu.cn。
  • 作者简介:文劲钧(2002—),男,学士,研究方向为复合材料低速冲击动态响应。
  • 基金资助:
    西安工程大学大学生创新创业训练计划项目(S202310709038)

A prediction model for dynamic compressive response of composite materials considering strain rate

WEN Jinjun1, QU Meijiao1*, SHEN Yongao2, LI Mengqi1, SONG Yuheng1, ZHU Hanrui1   

  1. 1. School of Mechanical and Electrical Engineering, Xi'an Polytechnic University, Xi'an 710048, China;
    2. China Aviation Development Xi'an Power Control Technology Co., Ltd., Xi'an 710077, China
  • Received:2024-02-01 Online:2024-07-28 Published:2024-08-08

摘要: 本文提出一种考虑应变率效应的复合材料动态压缩响应预测模型,该模型基于人工神经网络,根据材料的弹性模量等属性参数即可预测其不同应变率下的动态压缩响应。建立了T300/QY8911预浸料制备的碳纤维增强复合材料高应变率压缩响应预测模型,预测了该材料应变率为517 s-1、721 s-1和1 070 s-1时的动态压缩响应,并开展试验,对预测结果进行了验证。结果表明,预测结果与试验结果吻合度较高,应力最大误差仅为-1.585 6%,应变最大误差仅为1.703 7%。

关键词: 碳纤维增强复合材料, 应变率效应, 神经网络, 分离式霍普金森压杆, 低速冲击

Abstract: This article proposes a dynamic compression response prediction model for composite materials considering strain rate effects. Based on neural networks, a high strain rate compression response prediction model is constructed for carbon fiber reinforced composite materials prepared from T300/QY8911 prepreg with material properties as parameter variables. The dynamic compression response of the material at strain rates of 517 s-1, 721 s-1, and 1 070 s-1 is predicted, and experiments are conducted to verify the prediction results. The results indicate that the predicted results are in good agreement with the experimental results, the maximum error of stress is only -1.585 6%, and the maximum error of the strain is only 1.703 7%.

Key words: carbon fiber reinforced composites, strain rate effect, neural network, split Hopkinson pressure bar, low-velocity impact

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