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灵感来自猪羽毛的多孔结构:多尺度设计优化方法

Tian Lan¹, Kate Fox¹, Phuong Tran¹

¹School of Engineering, RMIT University, Melbourne VIC 3001, Australia.

Bioinspiration & biomimetics

|April 17, 2024

概括

这项研究引入了一种新的拓优化 (TO) 方法,灵感来自于大白猪,用于设计抗曲结构. 新方法增强了能量吸收和变形,改善了负载下的结构完整性.

科学领域:

机械工程机械工程
材料科学材料科学材料科学
计算力学计算力学计算力学

背景情况:

传统的拓优化 (TO) 方法在设计具有特定生物灵感特征的结构以提高机械性能方面面临挑战.
开发具有更好的能量吸收和变形能力的抗曲结构对于各种工程应用至关重要.

研究的目的:

介绍一种基于组件的新型拓优化 (TO) 方法,集成猪羽毛的灵感特征,用于设计自由形抗曲结构.
为了研究启发的特征在减轻材料产量和提高曲负载下的结构性能方面的有效性.

主要方法:

开发了一个基于离散组件的拓优化 (TO) 框架,结合了诸如固体外,随机毛孔和分级硬化剂等特征,以模仿猪.
优化过程反复更新组件,允许分级的羽毛灵感特征,以实现在曲负载下最佳的结构合规性.
该方法使用Messershmitt-Bolkow-Blohm (MBB) 束设计,参数化研究和各种束配置的数值模拟来验证.

主要成果:

拟议的带有羽毛的 TO 方法成功设计了具有优异曲耐力的结构,证明了更好的能量吸收和更大的变形能力.
对·米塞斯应力分布的分析表明,猪羽毛的几何特征有效地减轻了贝区域的材料产量.
通过制造的MBB梁的三点曲试验进行实验验证,证实了在大变形下增强的故障缓解能力.

结论:

基于组件的TO方法提供了一个有前途的策略,用于设计先进的抗曲结构.
生物灵感特征的整合显著提高了结构性能,特别是在能量吸收和故障前变形方面.
这种方法对需要轻量级但坚固的结构,能够承受相当大的曲负荷的应用具有潜力.

关键词:

添加剂制造添加剂制造添加剂制造生物灵感的生物灵感基于离散组件的拓优化优化有故障安全结构的结构.猪的羽毛猪的羽毛

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