复合材料科学与工程 ›› 2023, Vol. 0 ›› Issue (10): 17-22.DOI: 10.19936/j.cnki.2096-8000.20231028.003

• 基础研究 • 上一篇    下一篇

斜向冲击荷载作用下仿生蜂窝夹层梁动态响应数值模拟研究

张文萍1, 孔祥清1, 张惠玲1, 章文姣1, 李若男1, 付莹1,2*   

  1. 1.辽宁工业大学 土木建筑工程学院,锦州121001;
    2.松山湖材料实验室,东莞523000
  • 收稿日期:2022-10-10 出版日期:2023-10-28 发布日期:2023-12-13
  • 通讯作者: 付莹(1983—),男,博士,教授,主要从事新型材料及结构力学性能等方面的研究,fuying@sslab.org.cn。
  • 作者简介:张文萍(1997—),女,硕士研究生,主要从事新型材料及结构力学性能方面的研究。
  • 基金资助:
    国家自然科学基金项目(51479168);辽宁省教育厅基本科研面上项目基金(LJKZ0626)

Numerical investigation on dynamic response of bio-inspired honeycomb sandwich beams under oblique impact loading

ZHANG Wenping1, KONG Xiangqing1, ZHANG Huiling1, ZHANG Wenjiao1, LI Ruonan1, FU Ying1,2*   

  1. 1. Department of Civil & Architectural Engineering, Liaoning University of Technology, Jinzhou 121001, China;
    2. Songshan Lake Materials Laboratory, Dongguan 523000, China
  • Received:2022-10-10 Online:2023-10-28 Published:2023-12-13

摘要: 为探究双层夹芯新型仿生蜂窝夹层梁(Bio-inspired Honeycomb Sandwich Beam,BHSB)低速倾斜冲击下力学响应特性,利用ABAQUS有限元软件建立三维有限元数值模型,并将数值模拟结果与已有试验结果进行对比,验证了该模型的有效性。在此基础上,研究了冲击角度对BHSB的损伤模式、接触力峰值、接触时间、吸能的影响,同时利用该数值模型进一步探讨不同冲击能量下BHSB斜向冲击力学性能,分析了斜向冲击荷载下BHSB的失效模式及破坏机理。结果表明:随冲击角度的增加,峰值荷载降低2%~4%,能量吸收减小23%~52%,同时损伤区域减小,接触时间延长;随冲击能量的提高,BHSB损伤加重,峰值荷载增大20%~42%,能量吸收效率由59%增至83%。冲击角度及冲击能量对仿生蜂窝夹层结构斜向冲击性能数值分析的影响规律可为类似结构的实际应用提供一定参考。

关键词: 仿生设计, 有限元模型, 夹层梁, 斜向冲击, 复合材料

Abstract: In order to investigate the mechanical response of the new bio-inspired honeycomb sandwich beam (BHSB) with double core under low velocity oblique impact, a 3D finite element numerical model of BHSB was established via ABAQUS finite element software. And the numerical results are compared with the experimental results to verify the validity of the model. Based on the validated finite element model, the influence of impact angle on damage mode, contact force peak value, contact time and energy absorption of BHSB was studied. Meanwhile, the mechanical properties of BHSB under different impact energies were discussed, and the failure mode and failure mechanism of BHSB under oblique impact load were analyzed. The results show the peak load and energy absorption decrease by 2%~4% and 23%~52%, respectively, the damage area decreases and the contact time increases with the increase of impact angle. With the increase of impact energy, the damage of BHSB increases, the peak load increases by 20%~42%, and the energy absorption efficiency increases from 59% to 83%. The effects of impact angle and impact energy on the oblique impact performance of bionic honeycomb sandwich structures can provide some guides for the practical application of similar structures.

Key words: bio-inspired design, finite element model, sandwich beam, impact resistance, composites

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