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작성자아나운서리 조회 8회 작성일 2021-09-09 19:55:33 댓글 0


Shear Stress and Shear Strain | Mechanical Properties of Solids | Don't Memorise

"In the last video, we looked at one type of Stress \u0026 Strain called Normal Stress and Normal Strain.
But there is another type of them - shear stress and shear strain

In this video, we will learn:
0:00 Shear stress (example 1)
1:02 Difference between normal stress and shear stress
1:26 Shear stress (example 2)
3:07 Shear strain

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Understanding Shear Force and Bending Moment Diagrams

This video is an introduction to shear force and bending moment diagrams.

What are Shear Forces and Bending Moments?

Shear forces and bending moments are resultants which are used to conveniently represent the internal forces that develop within a beam when external loads are acting on it.

The internal forces that exist within the beam will depend on how the beam is loaded, and how it is supported. Beams are typically loaded by concentrated forces, distributed forces, and concentrated moments. Typical beam supports include pinned supports, roller supports, and fully fixed supports.

How Do We Draw the Shear Force and Bending Moment Diagrams?

Determining shear forces and bending moments along the length of a beam typically involves three steps:

- First we draw the free body diagram of our beam.
- Next we use the equilibrium equations to calculate the reaction forces and moments.
- Finally, we cut our beam at a single location and use the equilibrium equations to determine the shear force and bending moment at that location. We repeat this process for each location along the beam, and draw the result on our shear force and bending moment diagrams.


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