5.2.3. Examples

Try these first

1. 1.

   Explain how a cantilever beam reacts to dynamic loads.

   Hint

   Think about how it moves under lateral forces!

2. 2.

   What defines a dynamic degree of freedom?

   Hint

   Remember we talked about movement in class.

3. 3.

   What is a dynamic degree of freedom?

   • A static load point
   • The means by which a structure can move under dynamic loads
   • The mass of a structure

   Hint

   Consider how structures respond to changing forces.

4. 4.

   True or False: A cantilever beam has multiple dynamic degrees of freedom.

   • True
   • False

   Hint

   Refer to the class discussion on cantilever beams.

5. 5.

   Explain how the dynamic analysis of a cantilever beam would differ from that of a multi-story frame when subjected to an earthquake.

   Hint

   Refer to the complexities of analyzing each type of structure.

6. 6.

   Discuss how the presence of multiple DOFs in a multi-story frame affects the overall stiffness of the structure during seismic events.

   Hint

   Think about how forces are distributed in a multi-story building.