堵塞过渡和多分散软颗粒包装的正常模式
Kuniyasu Saitoh1, Brian P Tighe2
1Department of Physics, Faculty of Science, Kyoto Sangyo University, Kyoto 603-8555, Japan. k.saitoh@cc.kyoto-su.ac.jp.
多分散性显著影响软颗粒的阻塞,影响力和密度,但不影响临界缩放. 在干扰附近的机械和振动性能取决于距离这个过渡的距离,而不管粒子大小分布.
科学领域:
- 软物质物理学 软物质物理学
- 材料科学是一种材料科学.
- 计算力学是计算力学.
背景情况:
- 具有均大小的软粒子的干扰过渡是物理学中一个成熟的领域.
- 多分散 (非均尺寸) 系统在工程应用中更为普遍.
- 粒子大小分布对干扰现象的影响在很大程度上仍未被探索.
研究的目的:
- 在二维软粒子系统中对多分散性对干扰过渡的影响进行数值研究.
- 了解粒子大小分布如何影响接触力,协调数和过渡密度等关键性质.
- 为了确定多分散性是否会影响在阻塞点附近的机械和振动性质的关键缩放.
主要方法:
- 对二维软颗粒包装的数值模拟.
- 分析不同程度的多分散性系统中的干扰过渡.
- 检查接触力,局部协调,压力,弹性模块和状态的振动密度.
主要成果:
- 多分散性显著改变了接触力,局部协调,以及发生干扰的密度.
- 发现压力和弹性模块在阻塞附近的临界缩放是独立于粒子大小分布的.
- 软颗粒包装状态的振动密度对多分散性保持不敏感.
结论:
- 多分散性在干扰过渡时对特定的本地和全球性质有很大影响.
- 基本的关键行为,如机械性质和振动状态的缩放,对粒子大小分布的变化具有强度.
- 距离干扰过渡的距离是一个普遍的参数,规范软颗粒包装的机械和振动特性,无论它们的尺寸分布如何.
更多相关视频
11:27Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2
Published on: December 8, 2016
11:34Controlled Synthesis and Fluorescence Tracking of Highly Uniform PolyN-isopropylacrylamide Microgels
Published on: September 8, 2016
相关概念视频
First Law: Particles in Two-dimensional Equilibrium
Newton's first law tells us about...
Polymer Classification: Crystallinity
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
¹H NMR: Interpreting Distorted and Overlapping Signals
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
First Law: Particles in One-dimensional Equilibrium
Polymers: Molecular Weight Distribution
Equilibrium Conditions for a Particle
To understand the concept of equilibrium, let us first consider the forces acting on an object. When different forces act on an object, they can...
