Explain the Shear or Moment Diagrams
- Shear diagram changes by magnitude of the load.
- Shear is constant along unloaded portions of a beam
- For a point load, the shear function is constant. For a uniform load, the shear function is linear.
- For a constant shear, the moment function is linear.
- For a liner shear, the moment a second-degree curve.
- The change in moment = area under the shear diagram
- Max/min moment occurs at zero shear.
- An applied moment at a given location has NO affect on the shear diagram-only the moment diagram.
Shear/moment diagrams
dV/dx = - w(x)