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

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 classic literature ?
The study of gases was originally quite distinct from that of rigid bodies, and would never have advanced to its present state if it had not been independently pursued.
Cars offering a great ride tend to have highly rigid bodies, but blindly adding rigidity can easily increase vehicle weight.
The optical measuring instrument includes an optical tracker, two passive rigid bodies, and a passive probe.
The proposed formulation treats both aircraft and cargo as general rigid bodies with 6-DOF, thus the limitations of a symmetric assumption in previous studies are eliminated, and dynamics computation can be carried out in a fully coupled manner, without the need to predefine aircraft or cargo motion like the semicoupled approach mentioned above.
Finally, the dynamic equations of motion of the rigid body, as modeled by the FEM, are coupled in the direct time domain with the proposed kinematic interaction model to develop a complete FSI model for real-time simulation of the motion of massive rigid bodies floating on or submerged in the fluid.
The authors have organized the fifteen chapters that make up the main body of their text in four parts devoted to simulation foundations, particle-based models, interacting particle systems, particle choreography, rigid bodies and constrained dynamics, fluid simulation, and several other related subjects.
Further, stability and balance issues of human movement are often inadequately discussed in the literature in the form of equilibrium situations of rigid bodies. However, for animate systems, stable and unstable equilibrium approaches are too simplistic.
Aquatic floated-turning performance among rigid bodies animals have been studied in whirligig beetles (Fish and Nicastro, 2003), boxfish (Walker, 2000), and more recently in a freshwater turtle, Chrysemys picta (Testudines, Emydidae) (Rivera et al., 2006).
From the engine perspective, generally, in-game objects can belong to three different types: particles, particles systems (free or also connected among them), and rigid bodies. In this approach, soft bodies are-generally--rendered as systems of particles connected by spring joints [1, 11].
The demo showcased simulations of water balloons and rigid bodies being flung about by water waves.