生物灵感和三角格子模式的性能领域,以优化结构的刚性
Mathieu Bilhère-Dieuzeide1,2, Julien Chaves-Jacob1, Emmanuel Buhon2
1Aix-Marseille Univ, CNRS, ISM, Inst Mouvement Sci, UMR, 7287, Marseille, France.
Heliyon
|February 26, 2024
概括
这项研究比较了三个周期性压力驱动材料清除 (PSDMR) 结构,以优化机械系统性能. 结果显示,每个模式在特定条件下都表现出色,指导未来的材料减少策略.
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:
- 减少质量对于机械系统至关重要,但材料去除可能会损害性能.
- 压力驱动的材料去除方法使用局部参数平衡质量减少和机械完整性.
- 细胞结构,包括基于格子和生物灵感的模式,是这些方法的关键.
研究的目的:
- 为了研究局部体积分数和结构异构性对周期应力驱动材料移除 (PSDMR) 结构的机械刚度的影响.
- 为了比较生物灵感 (骨状方形和矩形图案) 和基于格子的支架图案的性能.
- 为了确定压力驱动材料去除应用的最佳细胞结构模式.
主要方法:
- 用有限元分析 (FEA) 进行线性弹性压缩试验.
- 分析了三种不同的平面细胞结构:一种基于文献的方形生物灵感模式,一种新的矩形生物灵感模式和一种标准的基于支架的格子模式.
- 每个结构的相对纵向刚度在不同的局部体积分数和异性倾向下进行了评估.
主要成果:
- 每个PSDMR模式都表现出一个特定的优越性能领域.
- 在某些配置中,生物启发的矩形图案显示了与方形图案相比,提高性的潜力.
- 基于支架的格子图案表现出独特的性能特征,受异性质的影响.
结论:
- 该研究强调,没有单一的PSDMR模式是普遍最佳的;性能取决于上下文.
- 根据它们的性能领域确定最佳模式或模式的组合可以增强压力驱动的材料去除方法.
- 这项研究为选择最有效的细胞结构提供了基础,以提高减少质量的机械部件的性能.
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