Moment/Shear Diagram Quick Question

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In summary, a moment/shear diagram is a graphical representation of the internal forces acting on a beam or structural element, created by analyzing external loads and support reactions and calculating internal forces. Its purpose is to help engineers understand beam behavior and determine maximum shear and bending moment. To interpret a moment/shear diagram, identify the type of loading and follow the diagram from left to right, noting changes in forces. These diagrams are essential in beam design as they provide information about internal forces that must be considered to ensure the beam can support applied loads without failing.
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lc99
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Homework Statement


upload_2018-5-4_23-30-42.png


Homework Equations

The Attempt at a Solution


How come the pins at B and E don't affect the shear or moment diagram?
 

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lc99 said:
How come the pins at B and E don't affect the shear or moment diagram?
Because there are no vertical forces applied to the ABCDEF system there.
 

1. What is a moment/shear diagram?

A moment/shear diagram is a graphical representation of the internal forces acting on a beam or structural element. It shows the variation of shear force and bending moment along the length of the beam.

2. How is a moment/shear diagram created?

A moment/shear diagram is created by analyzing the external loads and support reactions acting on the beam and calculating the internal forces at various points along the beam using equations of static equilibrium.

3. What is the purpose of a moment/shear diagram?

The purpose of a moment/shear diagram is to help engineers and designers understand how a beam will behave under different loading conditions. It is also used to determine the maximum shear and bending moment at critical points on the beam.

4. How do I interpret a moment/shear diagram?

To interpret a moment/shear diagram, you should first identify the type of loading acting on the beam (point load, uniformly distributed load, etc.). Then, follow the diagram from left to right, noting any changes in shear force or bending moment. The magnitudes of these forces can be found on the vertical axis.

5. How does a moment/shear diagram relate to beam design?

Moment/shear diagrams are essential tools in beam design as they provide information about the internal forces that must be considered when selecting the appropriate material and dimensions for a beam. Engineers use these diagrams to ensure that the beam will be able to support the applied loads without failing.

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