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Research Papers

A Formulation on the Special Euclidean Group for Dynamic Analysis of Multibody Systems

[+] Author and Article Information
Valentin Sonneville

Department of Aerospace and
Mechanical Engineering (LTAS),
University of Liège,
Chemin des Chevreuils 1,
Liège 4000, Belgium
e-mail: v.sonneville@ulg.ac.be

Olivier Brüls

Department of Aerospace and
Mechanical Engineering (LTAS),
University of Liège,
Chemin des Chevreuils 1,
Liège 4000, Belgium
e-mail: o.bruls@ulg.ac.be

Contributed by the Design Engineering Division of ASME for publication in the Journal of Computational and Nonlinear Dynamics. Manuscript received July 8, 2013; final manuscript received January 22, 2014; published online July 11, 2014. Assoc. Editor: Javier Cuadrado.

J. Comput. Nonlinear Dynam 9(4), 041002 (Jul 11, 2014) (8 pages) Paper No: CND-13-1173; doi: 10.1115/1.4026569 History: Received July 08, 2013; Revised January 22, 2014

This paper presents a finite element approach of multibody systems using the special Euclidean group SE(3) framework. The development leads to a compact and unified mixed coordinate formulation of the rigid bodies and the kinematic joints. Flexibility in the kinematic joints is also easily introduced. The method relies on local description of motions, so that it provides a singularity-free formulation and exhibits important advantages regarding numerical implementation. A practical case is presented to illustrate the method.

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Figures

Grahic Jump Location
Fig. 1

Representation of the nodes and the relationships involved in the finite element approach of multibody systems

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Fig. 2

Model of the spatial slider crank mechanism

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Fig. 3

Simulation results

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Fig. 4

Velocity of node 3: stars (red), x; circles (green), y; solid line (blue), z

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