# rigid body

(redirected from Rigid body motion)

## Rigid body

An idealized extended solid whose size and shape are definitely fixed and remain unaltered when forces are applied. Treatment of the motion of a rigid body in terms of Newton's laws of motion leads to an understanding of certain important aspects of the translational and rotational motion of real bodies without the necessity of considering the complications involved when changes in size and shape occur. Many of the principles used to treat the motion of rigid bodies apply in good approximation to the motion of real elastic solids. See Rigid-body dynamics

McGraw-Hill Concise Encyclopedia of Physics. © 2002 by The McGraw-Hill Companies, Inc.

## rigid body

[′rij·id ′bäd·ē]
(mechanics)
An idealized extended solid whose size and shape are definitely fixed and remain unaltered when forces are applied.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Better, MUMPS is faster, and the displacement results after springback are more user-friendly because rigid body motion has been removed.
The dual quaternion has been widely used as a unified representation of the 6-DOF rigid body motion, but the constraints between its elements need to be dealt with carefully [10,11].
It also enabled them to concurrently took at the robot's flexible body deformation and rigid body motion, which is a very difficult, time-consuming, and error-prone task when done by hand, McPhee said.
Vectors [P.sub.L] and [P.sub.R] are related to each other with rigid body motion equations if rotation matrix R and translation between cameras coordinate frames are known.
For fixation of the total setup under load, a rectangular wooden base with a groove for interference fit for the wooden cylinder was made such that it would rigidly fit the distal end of the wooden cylinder and prevents rigid body motion of the cylinder (Fig.
A unit real quaternion is a rotation operator on rigid body motion in Euclidean space.
The bar has an average rigid body motion velocity and for each end, the velocity is varying between two limits.
Other topics covered include differential games, the use of chaos indicators in rigid body motion, and single-point optimal attitude determination using modified Rodrigues parameters.
DADS uses component modal synthesis to simulate flexible characteristics of rigid body motion which is critical for accurate representation of modern lightweight, high-speed mechanical systems.
The behavior of the rod after the oblique impact is a combination of lateral and rotational rigid body motion superposed by the elastic vibrations.
In addition to the inertia force caused by the rigid body motion of a flexible mechanism, the inertia force due to the elastic vibration of flexible links plays an important role in the dynamics of flexible mechanisms and so should be eliminated.

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