Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Stability of monomer-dimer piles.

Deniz Ertaş1, Thomas C Halsey, Alex J Levine

  • 1Corporate Strategic Research, ExxonMobil Research and Engineering, Route 22 East, Annandale, New Jersey 08801, USA.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|January 7, 2003
PubMed
Summary

Adding dimer grains to spherical grain piles significantly increases their stability angle. This granular material research explores how mixed grain sizes affect pile properties and packing density.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Entropic crystallization of Brownian squares through pathways governed by orientational dynamics.

Journal of colloid and interface science·2026
Same author

A Free Energy Model for the Plateau Shear Modulus in Thermosensitive Microgel Suspensions.

Langmuir : the ACS journal of surfaces and colloids·2025
Same author

Nerve pathology and cutaneous features of acute rheumatoid vasculitis.

Rheumatology advances in practice·2024
Same author

Microfluidic dissolution of nanoemulsions in solvents.

Soft matter·2024
Same author

The Surfactant Properties of Clindamycin as a Useful Adjunct for Removing Ruptured Silicone Implants.

Plastic and reconstructive surgery. Global open·2024
Same author

Heptatic liquid quasi-crystals by colloidal lithographic pre-assembly.

Journal of colloid and interface science·2024

Area of Science:

  • Granular physics
  • Materials science
  • Statistical mechanics

Background:

  • Understanding the stability of granular materials is crucial in various fields, from geology to engineering.
  • The behavior of granular piles is influenced by factors like grain size, shape, and packing density.

Purpose of the Study:

  • To experimentally and theoretically investigate the effect of adding dimer grains to monodisperse spherical grains on pile stability.
  • To quantify the relationship between the weight fraction of dimer grains and the maximum static angle of stability and packing fraction.
  • To understand the micro-scale mechanisms governing the enhanced stability of granular piles with mixed grain compositions.

Main Methods:

  • Experimental preparation and tilting of granular piles composed of spherical and dimer grains.

Related Experiment Videos

  • Theoretical analysis to model the stability and packing fraction of the mixed granular systems.
  • Measurement of the maximum static angle of stability (tan theta(c)) and grain packing fraction (Phi).

    • Main Results:

    • The maximum static angle of stability (tan theta(c)) increased from 0.45 to 1.1 as the dimer grain fraction (nu(d)) increased from 0 to 1.
    • The grain packing fraction (Phi) decreased from 0.58 to 0.52 with the addition of dimer grains.
    • Pile stability is primarily controlled by surface grains and their interaction with local traps, which are enhanced by the presence of dimers.

    Conclusions:

    • The addition of dimer grains significantly enhances the static stability of granular piles.
    • The increased stability is attributed to the improved trapping of grains on the pile surface due to the presence of dimers.
    • Further characterization of surface roughness is needed for a complete quantitative understanding of the observed phenomena.