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Research Papers

Comparison of Semirecursive and Subsystem Synthesis Algorithms for the Efficient Simulation of Multibody Systems

[+] Author and Article Information
Alfonso Callejo

Centre for Intelligent Machines,
McGill University,
Montréal, QC H3A 0E9, Canada
e-mail: acallejo@cim.mcgill.ca

Yongjun Pan

INSIA,
Universidad Politécnica de Madrid,
Madrid 28031, Spain
e-mail: yongjun.pan@alumnos.upm.es

José L. Ricón

INSIA,
Universidad Politécnica de Madrid,
Madrid 28031, Spain
e-mail: jl.ricon@alumnos.upm.es

József Kövecses

Centre for Intelligent Machines,
McGill University,
Montréal, QC H3A 0E9, Canada
e-mail: jozsef.kovecses@mcgill.ca

Javier García de Jalón

INSIA,
Universidad Politécnica de Madrid,
Madrid 28031, Spain
e-mail: javier.garciadejalon@upm.es

1Corresponding author.

Contributed by the Design Engineering Division of ASME for publication in the JOURNAL OF COMPUTATIONAL AND NONLINEAR DYNAMICS. Manuscript received August 15, 2016; final manuscript received September 27, 2016; published online November 22, 2016. Assoc. Editor: Paramsothy Jayakumar.

J. Comput. Nonlinear Dynam 12(1), 011020 (Nov 22, 2016) (11 pages) Paper No: CND-16-1383; doi: 10.1115/1.4034870 History: Received August 15, 2016; Revised September 27, 2016

A great variety of formulations exist for the numerical simulation of rigid-body systems, particularly of medium-large systems such as vehicles. Topological formulations, which are considered to be the most efficient ones, are often cumbersome and not necessarily easy to implement. As a consequence, there is a lack of comparative evidence to support the performance of these formulations. In this paper, we present and compare three state-of-the-art topological formulations for multibody dynamics: generalized semirecursive, double-step semirecursive, and subsystem synthesis methods. We analyze the background, underlying principles, numerical efficiency, and accuracy of these formulations in a systematic way. A 28-degree-of-freedom, open-loop rover model and a 16-degree-of-freedom, closed-loop sedan car model are selected as study cases. Insight on the key aspects toward performance is provided.

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References

Figures

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Fig. 1

Kinematic relationship between two connected bodies

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Fig. 2

Structure of RdTMΣRd (dependent-coordinate form)

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Fig. 3

Structure of RzTRdTMΣRdRz (independent-coordinate form)

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Fig. 4

Exploration rover: multibody model

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Fig. 5

Sedan vehicle: multibody model

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Fig. 6

Rover: system topology

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Fig. 7

Sedan vehicle: system topology

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Fig. 8

X-, Y-, and Z-displacements of the rover chassis

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Fig. 9

X-, Y-, and Z-displacements of the sedan chassis

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