吉林大学学报(工学版) ›› 2021, Vol. 51 ›› Issue (3): 1140-1145.doi: 10.13229/j.cnki.jdxbgxb20200056

• 农业工程·仿生工程 • 上一篇    

仿蜂窝防护结构的承载特性

于征磊1,2(),信仁龙2,陈立新2,朱奕凝3,张志辉2,曹青2,金敬福2(),赵杰亮4   

  1. 1.吉林大学 汽车仿真与控制国家重点实验室，长春 130022
    2.吉林大学 工程仿生教育部重点实验室，长春 130022
    3.延边大学 农学院，吉林 延吉 133002
    4.北京理工大学 机械与车辆学院，北京 100081
  • 收稿日期:2020-01-23 出版日期:2021-05-01 发布日期:2021-05-07
  • 通讯作者: 金敬福 E-mail:zlyu@jlu.edu.cn;jinjingfu@jlu.edu.cn
  • 作者简介:于征磊（1984-），男，副教授，博士. 研究方向：仿生结构设计. E-mail：zlyu@jlu.edu.cn
  • 基金资助:
    国家重点研发计划项目(2018YFB1105100);国家自然科学基金项目(51975246);吉林省科技发展计划项目(YDZJ202101ZYTS134);汽车仿真与控制国家重点实验室自由探索项目(ascl-zytsxm-202013);吉林省教育厅“十三五”科技项目(YDZJ202101ZYTS134);工程仿生教育部重点实验室开放基金项目(KF20200001)

Load bearing characteristics of honeycomb protection structure

Zheng-lei YU1,2(),Ren-long XIN2,Li-xin CHEN2,Yi-ning ZHU3,Zhi-hui ZHANG2,Qing CAO2,Jing-fu JIN2(),Jie-liang ZHAO4   

  1. 1.State Key Laboratory of Automotive Simulation and Control，Jilin University，Changchun 130022，China
    2.Key Laboratory of Bionic Engineering，Ministry of Education，Jilin University，Changchun 130022，China
    3.Agriculture College，Yanbian University，Yanji 133002，China
    4.Department of Mechanical Engineering，Beijing Institute of Technology，Beijing 100081，China
  • Received:2020-01-23 Online:2021-05-01 Published:2021-05-07
  • Contact: Jing-fu JIN E-mail:zlyu@jlu.edu.cn;jinjingfu@jlu.edu.cn

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摘要：

为满足对结构安全方面的要求，本文借鉴蜂窝结构强度比高、力学性能优异的特性，运用结构仿生学原理设计并建立了简化的仿直蜂窝、仿斜蜂窝和平板结构3种模型。在5种不同工况下利用有限元分析软件OptiStruct对3种模型进行了承载特性分析，运用3D打印技术制备3种模型，并对样件进行力学特性试验。根据模拟结果与试验数据对比分析得到以下结论：仿斜蜂窝结构各位置的应力数值相近，仿斜蜂窝具有良好力学传导特性；在相同质量情况下，仿斜蜂窝结构的承载能力较仿直蜂窝结构提高12%，较平板结构提高150%，其承载能力有着较大的优势，所以仿斜蜂窝结构较为合理。本文的研究实现了对仿蜂窝结构的承载性能分析，为防护结构轻量化设计提供了参考。

关键词: 工程仿生学, 仿生结构设计, 3D打印, 承载特性, 数值模拟, 结构安全设计

Abstract:

In order to meet the requirements of structural safety， in this paper， first， the characteristics of high strength ratio and high mechanical properties of honeycomb structure were used for reference， and applies the principle of structural bionics to design and establish three simplified structure models， the direct honeycomb structure， oblique honeycomb structure and plate structure. Second， under five different working conditions， the finite element analysis software OptiStruct was used to analyze the bearing characteristics of three models. Finally， the three models were prepared by 3D printing technology， and the mechanical properties of the samples were tested and compared with that of simulation results. It is shown that the stress values at each position of the structure are similar to each other， and the structure has good mechanical conductivity. Under the condition of the same quality， the bearing capacity of the imitation oblique honeycomb structure is 12% higher than that of the imitation vertical honeycomb structure， and 150% higher than that of the plate structure. This work may provide a reference for the lightweight design of the protection structure.

Key words: engineering bionics, bionic structure design, 3D printing, bearing characteristics, numerical simulation, structural safety design

中图分类号: 

  • TB17

图1

蜂窝结构三维模型"

表1

美国Nature Works聚乳酸3001D物理参数"

参数数值

熔点/℃

密度/(kg·L-1)

拉伸模量/GPa

抗拉强度/MPa

抗拉屈服强度/MPa

热变形温度/℃

155~185

1.20~1.30

500

9000

8700

55

图2

平板结构模型样件力学特性试验照片"

图3

五种工况条件下3种模型受力云图及最大应力"

图4

不同工况下3种模型的应力曲线"

图5

平板结构、蜂窝结构压缩载荷-压缩位移曲线"

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