PMID: 15244867Jul 13, 2004Paper

Comment on "Mechanical analog of temperature for the description of force distribution in static granular packings"

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
Philip T Metzger

Abstract

It has been proposed by Ngan [Phys. Rev. E 68, 011301 (2003)] that the granular contact force distribution may be analytically derived by minimizing the analog of a thermodynamic free energy, in this case consisting of the total potential energy stored in the compressed contacts minus a particular form of entropy weighted by a parameter. The parameter is identified as a mechanical temperature. I argue that the particular form of entropy cannot be correct and as a result the proposed method produces increasingly errant results for increasing grain rigidity. This trend is evidenced in Ngan's published results and in other numerical simulations and experiments.

References

Sep 16, 2000·Physical Review Letters·H A MakseL M Schwartz
Jan 3, 2001·Physical Review Letters·C S O'HernS R Nagel
Apr 17, 2001·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·S J Antony
Apr 20, 2001·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·D L BlairS R Nagel
Feb 28, 2002·Physical Review Letters·Corey S O'HernSidney R Nagel
Mar 23, 2002·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Leonardo E SilbertDov Levine
Apr 24, 2002·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·A V Tkachenko, T A Witten
Nov 22, 2002·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·J Michael EriksonSidney R Nagel
Jan 7, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Leonardo E SilbertJames W Landry
Jun 5, 2003·Chaos·Farhang RadjaiJean Jacques Moreau
Jun 6, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·James W LandrySteven J Plimpton
Aug 26, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·A H W Ngan
Aug 26, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Corey S O'HernSidney R Nagel
Mar 6, 2004·Physical Review Letters·Jacco H SnoeijerWim van Saarloos

❮ Previous
Next ❯

Citations

Dec 17, 2004·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Philip T Metzger
Feb 9, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Jacco H SnoeijerJ M J van Leeuwen
May 21, 2005·Physical Review Letters·Philip T Metzger, Carly M Donahue

❮ Previous
Next ❯

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
Philip T Metzger
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
Vicente Garzó
Journal of Nanoscience and Nanotechnology
Jun-Hee HongKwang-Woo Kwon
© 2022 Meta ULC. All rights reserved