Damping: Difference between revisions
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Damping is defined as energy dissipation property of materials and structures that are subjected to time-variable loading. Damping is associated with irreversible transition of mechanical energy into thermal energy. Energy radiation into a surrounding medium is called radiation or geometric damping. | Damping is defined as energy dissipation property of materials and structures that are subjected to time-variable loading. Damping is associated with irreversible transition of mechanical energy into thermal energy. Energy radiation into a surrounding medium is called radiation or geometric damping (Benaroya 2004). | ||
== Damping classification == | == Damping classification == | ||
Revision as of 21:51, 4 January 2010
Damping is defined as energy dissipation property of materials and structures that are subjected to time-variable loading. Damping is associated with irreversible transition of mechanical energy into thermal energy. Energy radiation into a surrounding medium is called radiation or geometric damping (Benaroya 2004).
Damping classification
- material damping - energy dissipation by deformation in a medium.
- structural damping - damping in assembled structures at their contact surfaces and interfaces (such as frictional losses, losses at contact surfaces, etc.).
- radiation damping - energy radiation into the surrounding medium.
- geometric damping - same as radiation damping.
- active damping - damping with external energy and control.
- passive damping - damping without external energy and control.
- internal damping - damping inside defined system boundary.
- external damping - damping outside defined system boundary.
Computational models for damping
- modal damping
- Rayleigh damping
References
- Haym Benaroya: Mechanical vibration: analysis, uncertainties, and control. 2004 p. 94
External Links
- Damping at CSI Wiki