Dashpot
damper which resists motion via viscous friction
A dashpot, also known as a damper, is a mechanical device that resists motion via viscous damping. The resulting force is proportional to the velocity, but acts in the opposite direction, slowing the motion and absorbing energy. Kinetic energy is converted to heat. It is commonly used in conjunction with a spring.
Types
The two most common types of dashpots are linear and rotary.
Linear dashpot
Linear dashpots — or linear dampers — are used to exert a force opposite to a translation movement. They are generally specified by stroke (amount of linear displacement) and damping coefficient (force per velocity).
Rotary dashpot
Similarly, rotary dashpots will tend to oppose any torque applied to them, in an amount proportional to their rotational speed. Their damping coefficients will usually be specified by torque per angular velocity. One can distinguish two kinds of viscous rotary dashpots:
Vane dashpots which have a limited angular range but provide a significant damping torque.
The public source identifies “Dashpot” as damper which resists motion via viscous friction. This brief keeps that definition visible, then builds a research path around Dashpot, damper and resists.
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This entry incorporates text from “Dashpot” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.