(Contributions in the following topics are welcome! - cvasques 17:04, 9 February 2008 (UTC))
Several types of damping are inherently present in a mechanical system. If the level of damping that is available in this manner is not adequate for proper functioning of the system then external damping devices may be added either during the original design or during subsequent design modifications of the system. Three primary mechanisms of damping are important in the study of mechanical systems. They are:
1. Internal damping (of material)
2. Structural damping (at joints and interfaces)
3. Fluid damping (through fluid–structure interactions)
Internal (material) damping results from mechanical energy dissipation within the material due to various microscopic and macroscopic processes. Structural damping is caused by mechanical energy dissipation resulting from relative motions between components in a mechanical structure that has common points of contact, joints or supports. Fluid damping arises from the mechanical energy dissipation resulting from drag forces and associated dynamic interactions when a mechanical system or its components move in a fluid.