偕老同穴海绵启发的仿生结构吸能特性研究  

Energy Absorption Performance of Euplectella Sponge-inspired Lattice Structure

作　　者：杨峥 孙浩 丁晓红[1] 倪维宇[1] 张横[1] YANG Zheng;SUN Hao;DING Xiaohong;NI Weiyu;ZHANG Heng(School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学机械工程学院,上海200093

出　　处：《包装工程》2024年第15期297-306,共10页Packaging Engineering

基　　金：国家自然科学基金(52375257)。

摘　　要：目的为得到质量更轻、吸能效果更好的结构,以自然界中偕老同穴海绵复杂硅质骨针结构为仿生原型,提出一种偕老同穴海绵仿生吸能结构。方法通过有限元仿真对偕老同穴仿生结构和4种对比结构进行准静态压缩仿真,并在此基础上分析不同构型参数对海绵仿生结构吸能性能的影响。结果结果表明,偕老同穴海绵仿生结构在压缩过程中呈现二次受力平台效应,使得其吸能效果优于传统结构,同时当斜肋板位置系数Rkl为0.3时仿生结构的吸能效果最佳。随着斜肋板厚度的增大,结构的比吸能线性增加。从压溃力效率来看,当斜肋板厚度是纵横筋板厚度的1.6倍时,结构的压溃力峰值基本等于平均压溃力,结构压溃力效率达到最优,结构的整体吸能性能效果达到最优。结论本文所提出偕老同穴海绵仿生结构为高刚轻质吸能结构设计提供了参考,在吸能防护领域具有一定的应用前景。The work aims to propose a Euplectella sponge-inspired lattice(SIL)structure under the inspiration of the complex silicon skeleton of Euplectella sponges,so as to get lightweight structures with better energy absorption performance.The quasi-static compression simulation of the Euplectella sponge-inspired lattice structure and four contrast structures were conducted,and the effect of different configuration parameters of SIL on the absorption energy performance was studied.According to the simulation results,the energy absorption performance of the SIL was better than the conventional energy absorption structure for the second stress platform effect during compression of the SIL,the energy absorption performance reached the best when the value of Rkl was 0.3.The result of the contrast among structures with different Rtb showed that the specific energy absorption of SIL increased with the thickness of the diagonal rib plate.From the perspective of compression force efficiency,when the thickness of the diagonal rib plate was 1.6 times of the longitudinal rib plate,the peak compression force of the structure was equal to the average compression force,the compression force efficiency of SIL reached the optimal,and the SIL structure with best energy absorption performance was obtained.This paper offers a reference to the design of the lightweight structures with high stiffness and energy absorption performance by establishing the sponge-inspired lattice structure,which has some extent of potential application prospect in the sphere of absorption energy and protection.

关 键 词：吸能结构(EAS) 仿生设计(BD) 比吸能(SEA) 压溃力效率(CFE) 

分 类 号：TB484[一般工业技术—包装工程] TB13[理学—物理]