Multibody System Dynamics

, 20:177

Cluster computing of mechanisms dynamics using recursive formulation

Article

DOI: 10.1007/s11044-008-9115-5

Cite this article as:
Malczyk, P. & Frączek, J. Multibody Syst Dyn (2008) 20: 177. doi:10.1007/s11044-008-9115-5

Abstract

This paper presents the O(n) recursive algorithm for forward dynamics of closed loop kinematic chains adapted to parallel computations on a cluster of workstations. The Newton–Euler equations of motion are formulated in terms of relative coordinates. Closed loop kinematic chains are transformed into open loop chains by cut joint technique. Cut joint constraint and Lagrange multipliers are introduced to complete the equations of motion. Constraint stabilization is performed using the Baumgarte stabilization technique with application to multibody systems with large number of degrees of freedom. Numerical simulations are carried out to study the influence of the degrees of freedom of the multibody system on computational efficiency of the algorithm using the Message Passing Interface (MPI). We also consider the ways of minimization of communication overhead which has significant impact on efficiency in case of cluster computing.

Keywords

Recursive algorithm Distributed computing Closed loop Constraint stabilization 

Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  1. 1.Institute of Aeronautics and Applied MechanicsWarsaw University of TechnologyWarsawPoland

Personalised recommendations