Design and Optimization of Hierarchical Porous Metamaterial Lattices Inspired by the Pistol Shrimp's Claw: Coupling for Superior Crashworthiness.

IF 3.9 3区 医学 Q1 ENGINEERING, MULTIDISCIPLINARY
Jiahong Wen, Na Wu, Pei Tian, Xinlin Li, Shucai Xu, Jiafeng Song
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Abstract

This study, inspired by the impact resistance of the pistol shrimp's predatory claw, investigates the design and optimization of bionic energy absorption structures. Four types of bionic hierarchical porous metamaterial lattice structures with a negative Poisson's ratio were developed based on the microstructure of the pistol shrimp's fixed claw. These structures were validated through finite element models and quasi-static compression tests. Results showed that each structure exhibited distinct advantages and shortcomings in specific evaluation indices. To address these limitations, four new bionic structures were designed by coupling the characteristics of the original structures. The coupled structures demonstrated a superior balance across various performance indicators, with the EOS (Eight pillars Orthogonal with Side connectors on square frame) structure showing the most promising results. To further enhance the EOS structure, a parametric study was conducted on the distance d from the edge line to the curve vertex and the length-to-width ratio y of the negative Poisson's ratio structure beam. A fifth-order polynomial surrogate model was constructed to predict the Specific Energy Absorption (SEA), Crush Force Efficiency (CFE), and Undulation of Load-Carrying fluctuation (ULC) of the EOS structure. A multi-objective genetic algorithm was employed to optimize these three key performance indicators, achieving improvements of 1.98% in SEA, 2.42% in CFE, and 2.05% in ULC. This study provides a theoretical basis for the development of high-performance biomimetic energy absorption structures and demonstrates the effectiveness of coupling design with optimization algorithms to enhance structural performance.

受手枪虾爪启发的分层多孔超材料晶格的设计与优化:高耐撞性耦合。
本研究受手枪虾掠食爪抗冲击特性的启发,对仿生能量吸收结构的设计与优化进行了研究。基于手枪虾固定爪的微观结构,开发了4种具有负泊松比的仿生分层多孔超材料晶格结构。通过有限元模型和准静态压缩试验对结构进行了验证。结果表明,各结构在具体评价指标上各有优缺点。为了解决这些限制,我们设计了四种新的仿生结构,并结合了原有结构的特点。耦合结构在各种性能指标上表现出优异的平衡,EOS(八柱正交,方形框架上的侧连接器)结构显示出最有希望的结果。为了进一步增强EOS结构,对负泊松比结构梁的边线到曲线顶点的距离d和长宽比y进行了参数化研究。建立了五阶多项式替代模型,预测了EOS结构的比能吸收(SEA)、碾压力效率(CFE)和承载波动波动(ULC)。采用多目标遗传算法对这三个关键绩效指标进行优化,SEA提高1.98%,CFE提高2.42%,ULC提高2.05%。该研究为高性能仿生吸能结构的发展提供了理论基础,并证明了耦合设计与优化算法提高结构性能的有效性。
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来源期刊
Biomimetics
Biomimetics Biochemistry, Genetics and Molecular Biology-Biotechnology
CiteScore
3.50
自引率
11.10%
发文量
189
审稿时长
11 weeks
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