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Structural Engineering and Mechanics
  Volume 5, Number 2, March 1997 , pages 209-220
DOI: https://doi.org/10.12989/sem.1997.5.2.209
 


Scalar form of dynamic equations for a cluster of bodies
Vinogradov O

 
Abstract
    The dynamic equations for an arbitrary cluster comprising rigid spheres or assemblies of spheres (subclusters) encountered in granular-type systems are considered. The system is treated within the framework of multibody dynamics. It is shown that for an arbitrary cluster topology the governing equations can be given in an explicit scalar from. The derivation is based on the D\'Alembert principle, on inertial coordinate system for each body and direct utilization of the path matrix describing the topology. The scalar form of the equations is important in computer simulations of flow of granular-type materials. An illustrative example of a three-body system is given.
 
Key Words
    discrete systems, governing equations, granular materials
 
Address
Vinogradov O, UNIV CALGARY,DEPT MECH ENGN,CALGARY,AB T2N 1N4,CANADA
 

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