吉林大学学报(工学版) ›› 2021, Vol. 51 ›› Issue (4): 1540-1547.doi: 10.13229/j.cnki.jdxbgxb20210304

• 农业工程·仿生工程 • 上一篇    

基于增材制造的仿生防护结构力学及回复特性分析

于征磊1,2(),陈立新2,徐泽洲2,信仁龙2,马龙3,金敬福4(),张志辉2,江山5   

  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.空军航空大学 作战勤务学院，长春 130022
    4.吉林大学 生物与农业工程学院，长春 130022
    5.中国科学院 长春光学精密机械与物理研究所，长春 130033
  • 收稿日期:2021-01-12 出版日期:2021-07-01 发布日期:2021-07-14
  • 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);吉林大学博士研究生交叉学科科研计划项目(101832020DJX052)

Analysis of mechanical characteristics and recovery characteristics of bionic protective structures based on additive manufacturing

Zheng-lei YU1,2(),Li-xin CHEN2,Ze-zhou XU2,Ren-long XIN2,Long MA3,Jing-fu JIN4(),Zhi-hui ZHANG2,Shan JIANG5   

  1. 1.State Key Laboratory of Automotive Simulation and Control，Jilin University，Changchun 130022，China
    2.Key of Bionic Engineering，Ministry of Education，Jilin University，Changchun 130022，China
    3.College of Combat Service，Aviation University Air Force，Changchun 130022
    4.College of Biological and Agricultural Engineering，Jilin University，Changchun 130022，China
    5.Changchun Institute of Optics，Fine Mechanics and Physics，Chinese Academy of Sciences，Changchun 130033，China
  • Received:2021-01-12 Online:2021-07-01 Published:2021-07-14
  • Contact: Jing-fu JIN E-mail:zlyu@jlu.edu.cn;jinjingfu@jlu.edu.cn

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摘要：

运用结构仿生学设计原理，建立了两种具有记忆恢复特性的智能仿生防护结构，利用选择性激光熔融增材制造技术制备了仿生结构模型，通过数值模拟和试验测试方法分别对其进行了力学特性分析和变形回复特性测试。结果表明：对比试验力-位移曲线及其变形模式，仿真计算结果较为准确地模拟了仿生防护结构模型样件在静压过程中的变形特性及承载特性；仿生防护结构的压缩量可达15%，其压缩强度为81.4 MPa；卸载后在加热工况下其变形回复率达到99.04%。该研究实现了利用增材制造方法对于压力载荷下仿生防护结构的制备及其回复变形的功能的验证，为开发新型智能仿生防护结构提供了理论依据。

关键词: 工程仿生学, 仿生防护结构, NiTi合金, 增材制造, 数值模拟

Abstract:

In this paper， based on the laser melting additive manufacturing technology of NiTi alloy， two intelligent bionic protective structures with memory recovery characteristics are established by using the design principle of structure bionics. The bionic structure model is prepared by selective laser melting technology. The mechanical properties and deformation recovery properties of the bionic structure model are analyzed by numerical simulation and test. The results show that by comparing the experimental force-displacement curve and its deformation mode， the simulation calculation results more accurately simulate the deformation and load-bearing characteristics of the bionic protective structure model sample in the static pressure process； the compression of the bionic protective structure can reach 15%， its compression strength is 81.4 MPa. Its deformation recovery rate reaches 99.04% under heating conditions after unloading. This research has realized the verification of the preparation and the function of restoring deformation of bionic protective structure under pressure load by using additive manufacturing method， which provides a theoretical basis for the development of new intelligent bionic protection structure。

Key words: engineering bionics, bionic protective structure, NiTi alloy, additive manufacturing, numerical simulation

中图分类号: 

  • TB17

图1

防护结构的设计样件"

图2

仿生防护结构的网格划分及载荷边界条件"

图3

材料的力学性能"

图4

增材制造装置和试验装置"

图5

两种结构试验与模拟的力-位移曲线对比图"

图6

仿生防护结构模型吸能量和压缩强度"

图7

仿生防护结构模型准静态压缩试验的力-位移曲线和模型1热诱导形状恢复行为测试"

图8

仿生防护结构模型10次受载-卸载的力-位移曲线和热诱导形状恢复行为测试"

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