rigid body

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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

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.
References in periodicals archive ?
Briefly (the full account can be read at www.goringsacredcows.org, under "UFOs and ETs"), a rectangular, rigid object of negligible depth passed almost directly over my head at a constant speed of about 15 mph, with no visible means of propulsion or support.
In the dynamics design of the ODE system, ODE rigid object with the quality and position is generated, and ODE geometry corresponding to the rigid body is created at the same time.
In this scenario, we consider a single lead-carrier pair carrying a rigid object, hence establishing and translating a globally rigid formation, while avoiding all obstacles in its trajectory.
We notice that the ball and the basket are rigid objects. If these rigid objects suffered from blur problem, the pixels within a rigid object should suffer from same blur problem.
In the present work, a sliding mode controller is modeled and designed to simultaneously control the position-force of 3- DOF dual cooperative arm that manipulates a rigid object. Simplicity of the design, robustness against the uncertainties and indeterminacy, and fast convergence of the tracking error to zero are some benefits of this approach.
One of these designs is embedded optical fibers within a rigid object. These optical fibers exploit the component's total internal reflection to guide light within the object.
In an experiment on a mixture of water, surfactant (soap) and an organic salt, two researchers from the Pritchard Fluid Mechanics Laboratory at Penn State show that a rigid object like a knife passes through the mixture at slow speeds as if it were a liquid, but rips it up as if it were a rubbery solid when the knife moves rapidly.
They cover physics and measurement, motion and its laws, vectors, circular motion and other notions from Newton, the energy of a system conservation of energy, linear momentum and collisions, rotation of a rigid object about a fixed axis, angular momentum, static equilibrium and elasticity, universal gravitation, fluid mechanics, oscillatory motion, wave motion, sound waves, superposition and standing waves, temperature, the first and second laws of thermodynamics, the kinetic theory of gases, heat engines, and entropy.
To do so, the shark shakes its body back and forth, moving like a lever (rigid object that pivots about a fixed point, or fulcrum).
Even seemingly contradictory senses like contrast of dimensions can be coordinated: to be plump is to be three-dimensional (-emp), with a thick two-dimensional surface (pl-); a strap is mostly long and flexible, but also wide--i.e, it is a one-dimensional non-rigid object (str-) with a less salient extension in a second dimension (-aep); finally, a stump is a three-dimensional object (-emp) that used to be a one-dimensional rigid object (st-).
Second, the string does not overlap any solid rigid object. Third, the string does not overlap any other string.
Bottle class, rigid object, and giraffle class, non-rigid object, are chosen for evaluation.