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virtual displacement

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virtual displacement

[′vər·chə·wəl di′splās·mənt]
(mechanics)
Any change in the positions of the particles forming a mechanical system.
An infinitesimal change in the positions of the particles forming a mechanical system, which is consistent with the geometrical constraints on the system.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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References in periodicals archive
where [delta]x is a virtual displacement between two neighboring trajectories of system (1).
According to the virtual displacement principle of elastic mechanics, the momentum equation of coal-rock mass skeleton under quasi-static condition is [11]
Using the principle of virtual displacement, the equilibrium equation can be expressed for CLPT as:
According to the principle of virtual displacement, the virtual potential energy [delta]U should vanish at the equilibrium state of the system.
where [delta]u is the virtual displacement and [P.sup.*] is the generalized force.
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