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 Concept Videos

Elastic Strain Energy for Shearing Stresses01:20

Elastic Strain Energy for Shearing Stresses

277
As discussed in previous lessons, strain energy in a material is the energy stored when it is elastically deformed, a concept crucial in materials science and mechanical engineering. This energy results from the internal work done against the cohesive forces within the material. When a material undergoes shearing stress and corresponding shearing strain, the strain energy density, which is the energy stored per unit volume, is calculated. Within the elastic limit, where the stress is...
277
Ampere-Maxwell's Law: Problem-Solving01:17

Ampere-Maxwell's Law: Problem-Solving

745
A parallel-plate capacitor with capacitance C, whose plates have area A and separation distance d, is connected to a resistor R and a battery of voltage V. The current starts to flow at t = 0. What is the displacement current between the capacitor plates at time t? From the properties of the capacitor, what is the corresponding real current?
To solve the problem, we can use the equations from the analysis of an RC circuit and Maxwell's version of Ampère's law.
For the first part of...
745
Shearing Strain01:20

Shearing Strain

616
The shearing strain represents a cubic element's angular change when subjected to shearing stress. This type of stress can transform a cube into an oblique parallelepiped without influencing normal strains. The cubic element experiences a significant transformation when exposed solely to shearing stress. Its shape alters from a perfect cube into a rhomboid, clearly demonstrating the effect of shearing strain. The degree of this strain is considered positive if it reduces the angle between...
616
Shearing Stress01:19

Shearing Stress

845
Shearing stress, denoted by the Greek letter tau (τ), is stress caused by forces acting transversely on an object. These forces create internal ones within the entity in the plane where the external forces are applied. The resultant of these internal forces is the shear in the section.
The average shearing stress can be calculated by dividing the shear by the area of the cross-section.
845
Plastic Deformation in Circular Shafts01:20

Plastic Deformation in Circular Shafts

229
When materials are subjected to forces that surpass their yield strength, they undergo a process known as plastic deformation. This results in a permanent alteration or strain in their structure. This concept can be specifically applied to circular shafts, where the deformation leads to a change in its shape. The precise evaluation of this plastic deformation requires understanding the stress distribution within the circular shaft, which is achieved by calculating the maximum shearing stress in...
229
Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity01:15

Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity

326
Deformation occurs in axial and transverse directions when an axial load is applied to a slender bar. This deformation impacts the cubic element within the bar, transforming it into either a rectangular parallelepiped or a rhombus, contingent on its orientation. This transformation process induces shearing strain. Axial loading elicits both shearing and normal strains. Applying an axial load instigates equal normal and shearing stresses on elements oriented at a 45° angle to the load axis.
326

You might also read

Related Articles

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

Sort by
Same author

Coupling between phase separation and geometry on a closed elastic curve: Free energy minimization and dynamics.

The Journal of chemical physics·2026
Same author

Viscoelasticity and elastoplasticity in the power law creep and yielding of gels and fibre network materials under stress.

Soft matter·2026
Same author

Elastic Turbulence in Highly Entangled Polymers and Wormlike Micelles.

Physical review letters·2026
Same author

Toughness of Double Network Hydrogels: The Role of Reduced Stress Propagation.

Physical review letters·2025
Same author

Active particles in moving traps: Minimum work protocols and information efficiency of work extraction.

Physical review. E·2025
Same author

Quantifying dissipation in flocking dynamics: When tracking internal states matters.

Physical review. E·2025

Related Experiment Video

Updated: Sep 8, 2025

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

8.6K

Power fluctuations in sheared amorphous materials: A minimal model.

Timothy Ekeh1, Étienne Fodor2, Suzanne M Fielding3

  • 1DAMTP, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA, United Kingdom.

Physical Review. E
|June 16, 2022
PubMed
Summary
This summary is machine-generated.

This study introduces a new model for amorphous materials, revealing how fluctuations impact their flow behavior. It explains how negative power fluctuations change near the liquid-solid transition, offering insights into material properties.

More Related Videos

Dielectric RheoSANS — Simultaneous Interrogation of Impedance, Rheology and Small Angle Neutron Scattering of Complex Fluids
07:51

Dielectric RheoSANS — Simultaneous Interrogation of Impedance, Rheology and Small Angle Neutron Scattering of Complex Fluids

Published on: April 10, 2017

10.5K
Studying Large Amplitude Oscillatory Shear Response of Soft Materials
06:07

Studying Large Amplitude Oscillatory Shear Response of Soft Materials

Published on: April 25, 2019

12.9K

Related Experiment Videos

Last Updated: Sep 8, 2025

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

8.6K
Dielectric RheoSANS — Simultaneous Interrogation of Impedance, Rheology and Small Angle Neutron Scattering of Complex Fluids
07:51

Dielectric RheoSANS — Simultaneous Interrogation of Impedance, Rheology and Small Angle Neutron Scattering of Complex Fluids

Published on: April 10, 2017

10.5K
Studying Large Amplitude Oscillatory Shear Response of Soft Materials
06:07

Studying Large Amplitude Oscillatory Shear Response of Soft Materials

Published on: April 25, 2019

12.9K

Area of Science:

  • Rheology and soft matter physics
  • Computational modeling of complex fluids

Background:

  • Mesoscale fluctuations are crucial in flowing amorphous materials, but their exact role remains unclear.
  • Understanding these fluctuations is key to characterizing material behavior near phase transitions.

Purpose of the Study:

  • To develop and analyze a mean-field elastoplastic model for flowing amorphous materials.
  • To investigate the power distribution of stress and strain-rate fluctuations under steady shear flow.
  • To elucidate the mechanisms behind negative power fluctuations in different material phases.

Main Methods:

  • Development of a mean-field elastoplastic model.
  • Analysis of power distribution under steady shear flow.
  • Comparison of model predictions with numerical microrheological experiments.

Main Results:

  • The model predicts suppression of negative power fluctuations near the liquid-solid transition.
  • A fluctuation relation exists in limiting regimes, replaced by stretched-exponential tails generally.
  • A crossover in negative power fluctuation mechanisms is observed between liquid and yielding solid phases.

Conclusions:

  • The proposed model provides a framework for understanding mesoscale fluctuations in amorphous materials.
  • Model predictions align with experimental observations from numerical microrheology.
  • This work clarifies the role of fluctuations in the rheological properties of amorphous solids.