A unified two-dimensional contact model to capture the roughness of granular materials by rolling resistance

2017 ◽  
pp. 181-186 ◽  
Author(s):  
M.J. Jiang ◽  
D. Harris ◽  
H.-S. Yu
Keyword(s):  
Granular Materials ◽  
Rolling Resistance ◽  
Contact Model ◽  
Two Dimensional

Evolving the Banded Radial Tire

1987 ◽  
Vol 15 (1) ◽  
pp. 30-41 ◽  
Author(s):  
E. G. Markow
Keyword(s):  
Finite Element ◽  
Wear Rate ◽  
Finite Element Modeling ◽  
Laboratory Tests ◽  
Rolling Resistance ◽  
Two Dimensional ◽  
Theoretical Discussion ◽  
Radial Tire ◽  
Puncture Resistance ◽  
Element Modeling

Abstract Development of the banded radial tire is discussed. A major contribution of this tire design is a reliable run-flat capability over distances exceeding 160 km (100 mi). Experimental tire designs and materials are considered; a brief theoretical discussion of the mechanics of operation is given based on initial two-dimensional studies and later on more complete finite element modeling. Results of laboratory tests for cornering, rolling resistance, and braking are presented. Low rolling resistance, good cornering and braking properties, and low tread wear rate along with good puncture resistance are among the advantages of the banded radial tire designs.

Turbulent-like velocity fluctuations in two-dimensional granular materials subject to cyclic shear

Soft Matter ◽  
2022 ◽  
Author(s):  
Aile Sun ◽  
Yinqiao Wang ◽  
Yangrui Chen ◽  
Jin Shang ◽  
Jie Zheng ◽  
...  
Keyword(s):  
Experimental Study ◽  
Granular Materials ◽  
Granular Matter ◽  
Two Dimensional ◽  
Friction Coefficients ◽  
Velocity Fluctuations ◽  
Cyclic Shear

We perform a systematic experimental study to investigate the velocity fluctuations in the two-dimensional granular matter of low and high friction coefficients subjected to cyclic shear of a range of...

scholarly journals Two-dimensional packing in prolate granular materials

2003 ◽  
Vol 67 (5) ◽  
Author(s):  
K. Stokely ◽  
A. Diacou ◽  
Scott V. Franklin
Keyword(s):  
Granular Materials ◽  
Two Dimensional

Maximum Entropy Methods in the Mechanics of Quasi-Static Deformation of Granular Materials

2002 ◽  
Author(s):  
N. P. Kruyt ◽  
L. Rothenburg
Keyword(s):  
Probability Density ◽  
Maximum Entropy ◽  
Granular Materials ◽  
Probability Density Functions ◽  
Contact Forces ◽  
Static Deformation ◽  
Density Functions ◽  
Two Dimensional ◽  
Entropy Methods ◽  
Theoretical Predictions

In statistical physics of dilute gases maximum entropy methods are widely used for theoretical predictions of macroscopic quantities in terms of microscopic quantities. In this study an analogous approach to the mechanics of quasi-static deformation of granular materials is proposed. The reasoning is presented that leads to the definition of an entropy that is appropriate to quasi-static deformation of granular materials. This entropy is formulated in terms of contact quantities, since contacts constitute the relevant microscopic level for granular materials that consist of semirigid particles. The proposed maximum entropy approach is then applied to two cases. The first case deals with the probability density functions of contact forces in a two-dimensional assembly with frictional contacts under prescribed hydrostatic stress. The second case deals with the elastic behaviour of two-dimensional assemblies of non-rotating particles with bonded contacts. For both cases the probability density functions of contact forces are determined from the proposed maximum entropy method, under the constraints appropriate to the case. These constraints form the macroscopic information available about the system. With the probability density functions for contact forces thus determined, theoretical predictions of macroscopic quantities can be made. These theoretical predictions are then compared with results obtained from two-dimensional Discrete Element simulations and from experiments.

On the mechanics of meso-scale structures in two-dimensional granular materials

2016 ◽  
Vol 21 (7-8) ◽  
pp. 912-935 ◽  
Author(s):  
Huaxiang Zhu ◽  
Guillaume Veylon ◽  
François Nicot ◽  
Félix Darve
Keyword(s):  
Granular Materials ◽  
Two Dimensional ◽  
Scale Structures ◽  
Meso Scale

scholarly journals A Two-Dimensional Computational Droplet Contact Model

PAMM ◽  
2011 ◽  
Vol 11 (1) ◽  
pp. 103-104 ◽  
Author(s):  
Muhammad Osman ◽  
Roger A. Sauer
Keyword(s):  
Contact Model ◽  
Two Dimensional

scholarly journals Shape of jamming arches in two-dimensional deposits of granular materials

2010 ◽  
Vol 82 (3) ◽  
Author(s):  
Angel Garcimartín ◽  
Iker Zuriguel ◽  
Luis A. Pugnaloni ◽  
Alvaro Janda
Keyword(s):  
Granular Materials ◽  
Two Dimensional
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