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Related Concept Videos

Shearing Stress01:18

Shearing Stress

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.
Shearing Stresses in a Beam: Problem Solving01:14

Shearing Stresses in a Beam: Problem Solving

A cantilever beam with a rectangular cross-section under distributed and point loads experiences shearing stresses. The analysis begins by identifying the loads acting on the beam. Then, the reactions at the beam's fixed end are calculated using equilibrium equations. The vertical reaction is a combination of the distributed and point loads, while the moment reaction is the sum of their moments. The shear force distribution along the beam, resulting from these loads, is established by creating...
Stress: General Loading Conditions01:15

Stress: General Loading Conditions

To grasp the intricacy of real-world conditions where multiple loads are applied simultaneously to a structure, one might visualize a section passing through a specific point within a body, aligned parallel to the xy plane. This section is subjected to various forces, including original loads, normal forces, and shearing forces.
The shearing force, possessing potential directionality within the plane of the section, is simplified into two component forces running parallel to the x and y axes.
Components of Stress01:23

Components of Stress

Stress analysis under multiple loading conditions is intricate, necessitating a comprehensive grasp of normal and shearing stresses. Consider a small cube at point O, subjected to stress on all six faces, visible or not. Normal stress components σx, σy, σz act perpendicularly to the x, y, and z axes. Shearing stress components τxy and τxz are exerted on faces perpendicular to these axes.
Interestingly, the hidden cube faces also experience these stresses, equal and opposite to those on the...
Shearing Strain01:20

Shearing Strain

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 the...
Stresses in a Shaft01:18

Stresses in a Shaft

The shaft PQ is subjected to a twisting force when equal and opposite torques are applied on either side. A section that cuts perpendicular to the shaft's axis at any arbitrary point R is examined to understand this. When the free-body diagram of the QR segment is analyzed, it reveals the shearing forces exerted by the PR portion onto the QR segment as the shaft experiences twisting.
Applying equilibrium conditions to the QR segment establishes that the internal shearing forces within the...

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Related Experiment Video

Updated: Jun 8, 2026

Introducing Shear Stress in the Study of Bacterial Adhesion
13:28

Introducing Shear Stress in the Study of Bacterial Adhesion

Published on: September 2, 2011

Shear stress: devil's in the details.

Anne Hamik1, Mukesh K Jain

  • 1Case Western Reserve University, USA.

Blood
|October 16, 2010
PubMed
Summary
This summary is machine-generated.

Researchers identified new mechanosensitive genes in a mouse model of disturbed blood flow, which accelerates atherosclerosis. This study sheds light on the genetic factors influencing cardiovascular disease progression.

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Measuring Material Microstructure Under Flow Using 1-2 Plane Flow-Small Angle Neutron Scattering

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Last Updated: Jun 8, 2026

Introducing Shear Stress in the Study of Bacterial Adhesion
13:28

Introducing Shear Stress in the Study of Bacterial Adhesion

Published on: September 2, 2011

Measuring Material Microstructure Under Flow Using 1-2 Plane Flow-Small Angle Neutron Scattering
09:08

Measuring Material Microstructure Under Flow Using 1-2 Plane Flow-Small Angle Neutron Scattering

Published on: February 6, 2014

Area of Science:

  • Cardiovascular Biology
  • Genetics
  • Biomedical Engineering

Background:

  • Atherosclerosis is a complex cardiovascular disease characterized by the buildup of plaques in arteries.
  • Disturbed blood flow is a known contributor to the initiation and progression of atherosclerosis.
  • Identifying genes that respond to mechanical forces (mechanosensitive genes) is crucial for understanding disease mechanisms.

Discussion:

  • This study investigates the genetic underpinnings of atherosclerosis development under conditions of disturbed blood flow.
  • The research utilizes a sophisticated in vivo mouse model to simulate hemodynamic forces.
  • The focus is on discovering novel genes that are sensitive to mechanical stimuli.

Key Insights:

  • Ni et al. successfully identified novel mechanosensitive genes using a mouse model.
  • The identified genes play a role in the accelerated atherosclerosis observed under disturbed flow conditions.
  • These findings contribute to understanding the molecular response to hemodynamic stress.

Outlook:

  • Further research can explore the functional roles of these newly identified mechanosensitive genes in atherosclerosis.
  • Therapeutic strategies targeting these genes could offer new avenues for treating cardiovascular disease.
  • This work may pave the way for novel diagnostic or prognostic biomarkers for atherosclerosis.