在压缩下对三种生物模拟格子结构的能量吸收特性进行实验和计算分析
Mahtab Vafaeefar1, Kevin M Moerman2, Ted J Vaughan1
1Biomechanics Research Centre (BMEC), School of Engineering, College of Science and Engineering, University of Galway, Ireland.
Journal of the mechanical behavior of biomedical materials
|January 7, 2024
概括
双晶格结构吸收更多的能量,而陀螺晶格则显示出更高的能量吸收效率和更好的密度阻力. 脊柱状结构表现不佳,特别是在低体积分数时.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 生物模拟学是一种生物模拟学.
背景情况:
- 生物仿真格子结构对于先进的材料设计至关重要.
- 了解陀螺,双晶格和旋结构的机械性质对于它们的应用至关重要.
- 格子结构提供可调节的机械反应和能量吸收能力.
研究的目的:
- 评估和比较陀螺,双晶格和螺旋晶格生物仿真晶格的机械性能和能量吸收.
- 为了研究体积分数对这些格子结构性能的影响.
- 要将结构描述为曲主导或拉伸主导.
主要方法:
- 使用10%体积分数的弹性树脂3D打印陀螺和双格结构.
- 通过单轴压缩测试进行实验性表征.
- 有限元分析 (FEA) 用于模型校准和模拟较高体积分数.
- 能量吸收参数的计算和吉布森和阿什比定律的应用.
主要成果:
- 双网格结构显示,每单位体积的总体能量吸收率更高.
- 甲状腺结构表现出更高的能量吸收效率和更高的密集应变.
- 脊柱状结构显示了最低的能量吸收,特别是在低体积分数时.
- 双晶格结构被认为是拉伸主导的,而陀螺结构是曲主导的.
结论:
- 由于其效率和抗密集性,状腺结构对能量吸收应用具有前景.
- 机械行为和能量吸收能力强烈依赖于格子几何和体积分数.
- 作为曲或拉伸主导的特征提供了观察到的机械反应的洞察力.
相关概念视频
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