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 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 | * modal damping | ||
* Rayleigh damping | * Rayleigh damping | ||
== References == | |||
* Haym Benaroya: [http://books.google.com/books?id=FEQ0H3o-lfoC Mechanical vibration: analysis, uncertainties, and control]. 2004 p. 94 | |||
== External Links == | == External Links == | ||
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.
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