具有吸引力的合凝的网络物理:弹性,刚性和相位图
Mohammad Nabizadeh1, Farzaneh Nasirian2, Xinzhi Li3
1Department of Mechanical and Industrial Engineering, Northeastern University, Boston, MA 02215.
概括
体凝从粒子相互作用中形成刚性网络. 网络分析显示,凝弹性与网络弹性相关,使凝的验证阶段图成为可能.
科学领域:
- 体和接口科学科学
- 软物质物理学 软物质物理学
- 材料科学 材料科学 材料科学
背景情况:
- 由于粒子相互作用,合凝形成了硬的,跨越空间的网络,即使在低固体分数下,也会产生类似固体的行为.
- 虽然网络形成解释了刚性,但对不同的吸引力如何影响凝特性和准确的凝相图的基本理解仍然具有挑战性.
- 控制凝性质需要了解合体集群的形成及其相互连接的刚性.
研究的目的:
- 用网络分析工具来表征体结构并理解刚性的出现.
- 从粒子级和粗粒度集群网络中定量恢复凝弹性.
- 开发和实验验证合体凝的综合相位图.
主要方法:
- 从不同吸引力级别的合体空间坐标构建粒子级网络.
- 使用高斯混合模型对粗粒度网络形成的多分散的刚性碎形集群的识别.
- 将质量弹模型应用于集群网络,以获得定量弹性恢复.
主要成果:
- 凝弹性是一种动态性质,与其静态集群网络的弹性直接相关.
- 网络分析成功地描述了体结构,并揭示了凝的关键物理特征.
- 该研究设计了一个完全解决的合凝相图,包括一个清晰的固体-液体相界限.
结论:
- 体凝网络的弹性是预测动态凝弹性的可靠静态测量.
- 网络分析提供了一种强大的方法来表征体凝,并了解结构-属性关系.
- 开发的相位图在预测和控制合凝过程方面取得了重大进展.
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