Journal of Jilin University(Engineering and Technology Edition) ›› 2021, Vol. 51 ›› Issue (3): 1140-1145.doi: 10.13229/j.cnki.jdxbgxb20200056

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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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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

CLC Number: 

  • TB17

Fig.1

Three-dimensional model ofhoneycomb structure"

Table 1

Physical parameters of Nature Workspolylactic acid 3001D"

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

Fig.2

Static pressure test photo of sample plate structure model"

Fig.3

Under five working conditions, the stress cloud map and maximum stress of three models are obtained"

Fig.4

Stress curves of three models underdifferent working conditions"

Fig.5

Load-displacement curves for slab andhoneycomb structures"

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