EXPERIMENTAL AND NUMERICAL SIMULATION OF ELASTIC HONEYCOMB STRUCTURES BY 3D PRINTING (MT)

HOU YunYou; ZHANG Jie

doi:10.16579/j.issn.1001.9669.2023.05.034

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EXPERIMENTAL AND NUMERICAL SIMULATION OF ELASTIC HONEYCOMB STRUCTURES BY 3D PRINTING (MT)

更新时间：2023-11-16

- EXPERIMENTAL AND NUMERICAL SIMULATION OF ELASTIC HONEYCOMB STRUCTURES BY 3D PRINTING (MT)
- Journal of Mechanical Strength Issue 5, Pages: 1259-1264(2023)
- 作者机构：
  
  1. 江南大学机械工程学院
  2. 江苏省食品先进技术装备重点实验室
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2023.05.034
  CLC：
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HOU YunYou, ZHANG Jie. EXPERIMENTAL AND NUMERICAL SIMULATION OF ELASTIC HONEYCOMB STRUCTURES BY 3D PRINTING (MT). [J]. Journal of Mechanical Strength (5):1259-1264(2023)
DOI：

HOU YunYou, ZHANG Jie. EXPERIMENTAL AND NUMERICAL SIMULATION OF ELASTIC HONEYCOMB STRUCTURES BY 3D PRINTING (MT). [J]. Journal of Mechanical Strength (5):1259-1264(2023) DOI： 10.16579/j.issn.1001.9669.2023.05.034.

摘要

针对交通运输和人体防护对材料轻质及其对能量吸收性能的特殊要求，通过定制化设计多孔材料，对六边形蜂窝结构的聚二甲基硅氧烷(PDMS)的机械性能和能量吸收进行了实验和数值模拟研究。PDMS具有符合3D直书写打印的流体黏弹性，通过对直书写打印速度和气压的优化，成功地打印了具有不同线宽的蜂窝结构。随之对制作的样品进行准静态压缩测试来研究其机械性能和能量吸收情况，结果显示蜂窝结构在平台阶段受到的平均应力随线宽的增大而增大且表现出各向异性，线宽为900μm的蜂窝结构表现出高的能量吸收，最高0.018 J/cm,3,。对应的有限元计算结果与实验结果相符。

Abstract

Transportation and human protection industry constantly demands for lightweight and better energy absorption materials and structures. By designing customizable porous materials, the mechanical properties and energy absorption of hexagonal honeycomb-structured polydimethylsiloxane（PDMS） were investigated through experiments and numerical simulations. PDMS has adequate viscoelastic properties for 3D directing ink writing（DIW）, therefore the honeycomb structures with different line widths were fabricated through optimizations of the printing speed and air pressure. Quasi-static compression tests were performed on the fabricated samples to evaluate their mechanical properties and energy absorption. The results show that the average stress in the plateau stage of the honeycomb structure increase with the increase of the line width, but is anisotropy. The honeycomb structure with line width of 900 μm has highest energy absorption of 0.018 J/cm~3. The corresponding finite element analysis were in agreement with the experimental results.

关键词

3D直书写打印弹性体蜂窝结构数值模拟机械性能能量吸收

Keywords

3D directing ink writingElastomeric honeycomb structureNumerical simulationMechanical propertiesEnergy absorption

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