螺旋外中自相似结构的机械性能和能量吸收特性
Zhanhong Guo1,2, Na Han2, Meng Zou2
1College of Mechanical and Electronic Engineering, Tarim University, Alar 843300, People's Republic of China.
Bioinspiration & biomimetics
|September 30, 2025
概括
贝具有显著的能量吸收 (EA),这是由于它们类似于碎形的,与自身相似的结构. 这项研究优化了贝外设计,以提高生物灵感吸收能源的应用.
科学领域:
- 材料科学 材料科学 材料科学
- 生物模拟学是一种生物模拟学.
- 机械工程 机械工程
背景情况:
- 贝表现出优越的机械性能,经常被称为"自然的自然盔甲",由于其复杂的多层次层次结构.
- 了解贝独特的3D架构及其能量吸收 (EA) 能力之间的关系对于生物灵感设计至关重要.
研究的目的:
- 研究贝的自我相似的3D结构,并分析其对能量吸收 (EA) 的影响.
- 开发和优化贝结构的数学模型,以提高能量消散性能.
主要方法:
- 利用通用测试机来评估横向和轴向压缩下的机械性能.
- 开发了一个基于几何公式的数学3D模型,通过基于扫描仪的数字化和反向重建来增强.
- 采用多物理模拟和响应表面建模来优化结构参数并量化它们与EA的相关性.
主要成果:
- 体样本显示出明显的机械性能,横向压缩产生平均峰值负载442.55N,轴向压缩显示平均峰值负载412.16N.
- 优化的结构参数 (α=86.6,β=12.2,r0=92.5,a=27.5,b=37.5) 导致了显著的性能改善.
- 获得的优化特定能量吸收 (SEAoptim) 为13.38 J/g,最大压缩力 (MCFoptim) 为13.08 kN,压缩力效率 (CFEoptim) 为0.45,有效负载能力 (ULCoptim) 为0.33.
结论:
- 贝的能量消散性能与它们的碎形式,自我相似的组织密切相关.
- 优化的生物灵感结构设计为开发先进的能吸收材料和结构提供了有前途的途径.
- 研究结果为未来设计高性能,以自然为灵感的能量吸收器提供了重要的理论和实验参考.
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