4.2. Dynamic Excitation

Try these first

1. 1.

   What is dynamic excitation?

   Hint

   Think about loads that change over time.

2. 2.

   Name one example of a dynamic load.

   Hint

   Consider natural disasters affecting structures.

3. 3.

   What distinguishes dynamic excitation from static loads?

   • Static loads are always higher
   • Dynamic loads vary over time
   • Static loads include vibrations

   Hint

   Consider the behavior of forces during natural events.

4. 4.

   True or False: Inertia effects are negligible in dynamic excitation.

   • True
   • False

   Hint

   Think about how mass reacts to changes.

5. 5.

   A building is designed to withstand static loads only. During an earthquake, it experiences significant amplifications due to resonance. Discuss the implications and what design changes could improve its resilience.

   Hint

   Think about how structures are tested for various load types.

6. 6.

   From the above equation of motion, determine how would you modify the response of a structure under dynamic loading if the damping matrix C is increased. Explain the effects this could have.

   Hint

   Consider how damping affects oscillations in physical systems.