889 B
889 B
(see Vibration_Mechanical_Shock_And_Impact.pdf)
Collision
A collision is a broad term that describes any event where two or more bodies exert forces on each other for a relatively short time.
The Hertz Law describe the contact between two elastic solids.
There is also Inelastic Collisions.
Collision analysis often emphasizes momentum exchange
Impact
An impact is a type of collision with a high force over a short duration.
(see Impact Models)
Impact analysis considers material deformation and damage
Shock
A shock is a sudden acceleration caused by various events, including impacts. Key characteristics of shock include:
- A transient physical excitation
- Extreme rates of force with respect to time
- Measured as a vector with units of acceleration (often in multiples of g)
Shock analysis concentrates on acceleration and its effects on structures