Photoelastic force measurements in granular materials

被引：117

作者：

Daniels, Karen E. ^{[1
]}

Kollmer, Jonathan E. ^{[1
]}

Puckett, James G. ^{[2
]}

机构：

[1] North Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA

[2] Gettysburg Coll, Dept Phys, Gettysburg, PA 17325 USA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2017年 / 88卷 / 05期

基金：

美国国家科学基金会;

关键词：

COUETTE EXPERIMENT; FLUCTUATIONS; PROPAGATION; TRANSITION; SIMULATION; ALGORITHM; PATTERNS; SHEARING; ERRORS; FLOW;

D O I：

10.1063/1.4983049

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Photoelastic techniques are used to make both qualitative and quantitative measurements of the forces within idealized granular materials. The method is based on placing a birefringent granular material between a pair of polarizing filters, so that each region of the material rotates the polarization of light according to the amount of local stress. In this review paper, we summarize the past work using the technique, describe the optics underlying the technique, and illustrate how it can be used to quantitatively determine the vector contact forces between particles in a 2D granular system. We provide a description of software resources available to perform this task, as well as key techniques and resources for building an experimental apparatus. Published by AIP Publishing.

引用

页数：13

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