接触网络和力量传递在六足形粒子聚合物中
Trieu-Duy Tran1,2, Saeid Nezamabadi1, Jean-Philippe Bayle2
1LMGC, University of Montpellier, CNRS, Montpellier, France.
Soft matter
|March 20, 2024
概括
粒子动力学模拟揭示了六足体形状如何影响颗粒物质强度. 增加的尺寸比和摩擦显著改变了这些非凸颗粒包装的微观结构,力传递和稳定性.
科学领域:
- 颗粒物质科学 颗粒物质科学
- 计算物理 计算物理
- 材料工程 材料工程 材料工程
背景情况:
- 六足,非形形状,有三个直角臂,用于研究对颗粒材料强度的相互锁定效应.
- 六足动物包装的微观结构特征,对于它们的强度至关重要,尚未得到充分理解.
研究的目的:
- 研究六足动物颗粒包装中的微观结构特征和力传递.
- 分析面积比率和粒子间摩擦对这些属性的影响.
主要方法:
- 用粒子动力学模拟来创建以同位素包装的六足动物聚合物.
- 分析重点是包装分数,联系协调号,对分布函数,力分布和弹性散装模量.
主要成果:
- 包装分数表现出非单调的行为与尺寸比率由于竞争的硬质排斥和相互锁定.
- 接触协调数随着摩擦增加而显著下降,突出显示了摩擦对稳定性的强烈影响.
- 当地排序在面积比率3之外减少,六足动物与第二个邻居接触并在面积比率3上对齐.
- 力量分布类似于球体包装,但显示出更广泛的强力随着面积比的增加而下降.
- 弹性散装模量与尺寸比率大幅增加,这是由于接触密度更高和第二邻接触.
结论:
- 六足体形状和粒子间摩擦极大地影响颗粒状材料的微观结构和机械性能.
- 尺寸比例显著影响包装分数,排序和力传输,在尺寸比例3上观察到特定的对齐.
- 摩擦在六足动物包装的稳定性中起着更为主导的作用,而不是球体包装.
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