冲击荷载作用下仿生蜂窝夹层梁动态响应数值模拟研究

doi:10.19936/j.cnki.2096-8000.20230728.003

复合材料科学与工程 ›› 2023, Vol. 0 ›› Issue (7): 19-25.DOI: 10.19936/j.cnki.2096-8000.20230728.003

冲击荷载作用下仿生蜂窝夹层梁动态响应数值模拟研究

孔祥清¹, 张文萍¹, 张惠玲¹, 章文姣¹, 李若男¹, 付莹^1,2*

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:2022-05-26 发布日期:2023-08-22
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方面的研究,fuying@sslab.org.cn。
作者简介:孔祥清(1982—),女,博士,教授,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(LJK20626)

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

KONG Xiangqing¹, ZHANG Wenping¹, ZHANG Huiling¹, ZHANG Wenjiao¹, LI Ruonan¹, FU Ying^1,2*

1. Department of Civil & Architectural Engineering, Liaoning University of Technology, Jinzhou 121001, China;
2. Songshan Lake Materials Laboratory, Dongguan 523000, China

Received:2022-05-26 Published:2023-08-22

摘要/Abstract

摘要： 为了探究双层夹芯新型仿生蜂窝夹层梁(Bio-inspired Honeycomb Sandwich Beam,BHSB)的抗冲击性能,利用ABAQUS有限元软件建立了其在冲击荷载作用下的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了对比,验证了该模型的有效性。在此基础上,分析了BHSB在冲击荷载作用下的动力响应,并与传统蜂窝夹层梁(Honeycomb Sandwich Beam,HSB)进行了对比。同时利用该数值模型进一步分析了冲击荷载作用下橡胶夹芯(夹芯Ⅰ)厚度、材料类型和蜂窝夹芯(夹芯Ⅱ)壁厚等几何参数对BHSB的冲击荷载、能量吸收的影响。结果表明,与HSB夹芯发生剪切破坏不同,BHSB的破坏主要为上部蒙皮处基体开裂,而夹芯保持完整。与HSB相比,BHSB峰值力高约一倍,且整体变形较小。随夹芯Ⅰ厚度的减小,BHSB抗冲击性能一定程度上得到改善。夹芯Ⅱ壁厚的改变对该结构的冲击荷载有显著影响,而对其能量吸收无明显影响。对比橡胶与PMI泡沫两种不同夹芯Ⅰ材料类型下的BHSB动态响应,可知从抵抗冲击荷载角度,采用橡胶夹芯的BHSB冲击性能优于采用PMI泡沫夹芯的BHSB冲击性能,但从吸能效果方面,后者更具优势。

关键词: 仿生设计, 有限元模型, 夹层梁, 抗冲击, 复合材料

Abstract: In order to explore the impact resistance of the new bio-inspired honeycomb sandwich beam (BHSB) with double core, a 3D finite element numerical model of BHSB under the impact was established via ABAQUS finite element software. And the numerical simulation results are compared with the experimental results to verify the validity of the model. On this basis, the dynamic response of BHSB under impact load is analyzed and compared with traditional honeycomb sandwich beam (HSB). The numerical model is used to further analyze the influence of geometric parameters such as thickness of rubber core (core Ⅰ),material type and wall thickness of honeycomb sandwich (core Ⅱ) on impact load and energy absorption of BHSB. The results show that, unlike the shear failure of HSB sandwich, the failure of BHSB mainly occurs in the upper skin matrix cracking, while the sandwich remains intact. Compared with HSB, the peak force of BHSB is about twice as high and the overall deformation is smaller. With the decrease of the thickness of core Ⅰ, the impact resistance of BHSB is improved to a certain extent. The change of wall thickness of core Ⅱ has a significant effect on the impact load of the structure, but has no obvious effect on the energy absorption. To compare the dynamic response of BHSB with rubber or PMI foam, it can be seen that the impact performance of BHSB with rubber core is better than that with PMI foam core from the perspective of impact load resistance, but the latter has more advantages in terms of energy absorption effect.

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

中图分类号:

TB332

孔祥清, 张文萍, 张惠玲, 章文姣, 李若男, 付莹. 冲击荷载作用下仿生蜂窝夹层梁动态响应数值模拟研究[J]. 复合材料科学与工程, 2023, 0(7): 19-25.

KONG Xiangqing, ZHANG Wenping, ZHANG Huiling, ZHANG Wenjiao, LI Ruonan, FU Ying. Numerical investigation on dynamic response of bio-inspired honeycomb sandwich beams under impact loading[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(7): 19-25.

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冲击荷载作用下仿生蜂窝夹层梁动态响应数值模拟研究

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

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