SIMULATION OF MULTIBODY SYSTEMS WITH THE USE OF COUPLING TECHNIQUES: A CASE STUDY
K. Arczewski, Marek Wojtyra · 2009
Simulation coupling (or co-simulation) techniques provid e a framework for the anal- ysis of decomposed dynamical systems with the use of independ ent numerical procedures for decomposed subsystems. These methods are often seen as very promising because they enable the utilisation of the existing software for subsystem analy sis and usually are easy to parallelize, and run in a distributed environment. For example, in the dom ain of multibody systems dynam- ics a general setup for Gluing Algorithms was proposed by Wa ng et. al.. It was intended to provide a basis for multi-level distributed simulation env ironment. The authors presented an example where Newton's method was used to synchronise the respon ses of subsystem simula- tors. In this paper we discuss some properties of simplified iterati ve coupling scheme, where subsystems' responses are synchronised at discrete time-p oints. We use a simple model of double pendulum to investigate the influence of synchronisa tion parameters on computations. We also try to provide explanation to the oscillatory behavi our of the solutions obtained from this method.