Energy Dissipation
Energy dissipation is the process by which mechanical energy in a system is converted into other forms, primarily Heat or internal deformation, resulting in a loss of macroscopic kinetic energy. In elastic collisions, this manifests as a reduction in the coefficient of restitution.
Mechanisms
- Internal Friction: Molecular interactions within materials convert kinetic energy to thermal energy during deformation cycles.
- Hysteresis: The lag between stress and strain in viscoelastic materials leads to energy loss per cycle.
- Acoustic Radiation: Energy lost as sound waves during impact.
Counter-Intuitive Behaviors
While combining elastic objects often increases rebound height (e.g., Superball stacking), specific configurations can lead to total energy absorption or zero bounce due to phase cancellation or impedance mismatch.
- See The Paradox of Zero Bounce from Similarly Elastic Objects for a detailed analysis of how two highly elastic objects can result in zero rebound under specific conditions.