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

Dynamical Janssen effect on granular packing with moving walls.

Yann Bertho1, Frédérique Giorgiutti-Dauphiné, Jean-Pierre Hulin

  • 1Laboratoire FAST, UMR 7608, Bâtiment 502, Université Paris-Sud, 91 405 Orsay Cedex, France.

Physical Review Letters
|May 7, 2003
PubMed
Summary

Janssen's model accurately describes granular materials in motion, showing apparent mass increases exponentially with packing height. Moving granular packings exhibit less variability and a lower limiting apparent mass than static ones.

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

Long distance laser filamentation using Yb:YAG kHz laser.

Scientific reports·2023
Same author

Penetrating a granular medium by successive impacts.

Physical review. E·2022
Same author

From laboratory experiments to geophysical tsunamis generated by subaerial landslides.

Scientific reports·2021
Same author

Imbibition and structure of silica nanoporous media characterized by neutron imaging.

Journal of colloid and interface science·2020
Same author

Imbibition on a porous layer: dynamical and mechanical characterization.

Soft matter·2019
Same author

Structuration of the Surface Layer during Drying of Colloidal Dispersions.

Langmuir : the ACS journal of surfaces and colloids·2019

Area of Science:

  • Physics
  • Materials Science
  • Granular Mechanics

Background:

  • Granular materials exhibit complex behaviors, particularly under dynamic conditions.
  • Janssen's model is a foundational theory for understanding stress distribution in granular media.

Purpose of the Study:

  • To investigate the validity of Janssen's model for granular packings in relative motion.
  • To quantify the apparent mass (M(app)) in dynamic granular systems.

Main Methods:

  • Measurements of apparent mass were conducted at the bottom of granular packings within a vertical tube.
  • Relative motion between the packing and the tube was varied over a range of velocities (v).

Main Results:

  • Janssen's model was confirmed to be valid across a wide spectrum of velocities.

Related Experiment Videos

  • Dynamic packings showed reduced measurement variability compared to static configurations.
  • Apparent mass demonstrated a precise exponential increase with packing height, consistent with theoretical predictions.
  • The characteristic screening length was found to be approximately the tube diameter.
  • A limiting apparent mass, independent of velocity, was observed at greater heights and was notably lower than static values.

    • Conclusions:

    • Janssen's model effectively describes granular materials even when they are in motion.
    • Dynamic conditions lead to more reliable measurements and a distinct stress profile compared to static granular packings.