解锁带有粒子的接口:几何和历史的影响
Carole Planchette1, Gregor Plohl1
1Graz Universisty of Technology, Institute of Fluid Mechanics and Heat Transfer, Inffeldgasse 25/F, 8010 Graz, Austria. carole.planchette@tugraz.at.
Soft matter
|February 6, 2025
概括
压缩下的粒子通过最小的,轴向的或侧向的过程来解锁. 轴向解锁创建了一个通道,而横向解锁导致显著的压力放松,受的几何和准备历史的影响.
科学领域:
- 物理 物理学 物理
- 材料科学 材料科学 材料科学
- 颗粒力学 颗粒力学
背景情况:
- 粒子是复杂的颗粒状系统,表现出阻塞和解阻塞现象.
- 了解解堵动力学对于预测材料流量和故障至关重要.
研究的目的:
- 实验性地研究通过有限的孔径来解锁单轴压缩的粒子.
- 识别和描述不同的不干扰行为及其潜在机制.
主要方法:
- 使用玻璃珠的实验研究 (约. 100μm) 在单轴压缩中.
- 系统地改变的几何形状 (长度,压缩,孔径宽度) 和准备协议.
主要成果:
- 确定了三个不干扰行为:最小,轴向和横向.
- 轴向解锁沿压缩轴形成一个通道,导致部分应力放松.
- 侧向解,是一种侵蚀过程,发生在轴向解后,并导致显著的应力松.
结论:
- 不干扰行为是通过强力链网络破裂来合理化,以防止剪切 (轴) 和延伸 (侧面).
- 的几何和准备历史显著影响解堵门和动态.
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