Modeling of Mechanical (Lumped Parameter) Elements
Modeling of Mechanical (Lumped Parameter) Elements
Modeling of Mechanical (Lumped Parameter) Elements
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Dissipation elements in mechanical systemsThese are mechanical components which dissipate power (removeenergy from system) converting it usually into heat. The process isirreversible!Energy dissipation elements are known as dampers or dashpots, andtypically used as:ISOLATORS: to reduce the amount <strong>of</strong> transmitted forces (moments) toother system components, and/orVIBRATION ABSORVERS: to dissipate energy <strong>of</strong> undesirablevibrations and to decrease the amplitude <strong>of</strong> vibrations in a mechanicalsystem.(Note: effort=force or moment, flow: velocity or angular speed)TYPES <strong>of</strong> DAMPING:VISCOUS (Linear)effort = D flowTypically found at low speeds andwith viscous fluidsNONLINEAR DAMPING:Aerodynamic:effort = C |flow| flowTypically found at high speeds andwith non-viscous fluidsMEEN 617 Notes: Handout 1 / © Luis San Andrés 2008 1.12
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