4.2.3. Examples

Try these first

1. 1.

   Define dynamic excitation.

   Hint

   Think about forces that change quickly over time.

2. 2.

   Give an example of an impact load.

   Hint

   Consider sudden force applications.

3. 3.

   What type of forces do earthquakes represent?

   • Static forces
   • Dynamic forces
   • Invariable forces

   Hint

   Think about the nature of ground movement.

4. 4.

   True or False: Impact loads act slowly over time.

   • True
   • False

   Hint

   Consider the definition of impact.

5. 5.

   A bridge is designed to a static load capacity of 500 kN. How would you approach its redesign to account for an expected dynamic load due to traffic?

   Hint

   Think about how live loads differ from static.

6. 6.

   Analyze the potential damage a structure may sustain under a sudden impact load from a moving vehicle.

   Hint

   Reflect on examples of safety in automotive designs.