This paper presents a generalization of Kutzbach-Gru¨bler criterion for mobility analysis of kinematic chains based on group theory. This new mobility criterion applies to exceptional linkages and reduces to a group theoretic representation of Kutzbach-Gru¨bler criterion for trivial linkages. Furthermore, it is shown that using sets and groups of Euclidean displacements, one can distinguish between trivial, exceptional, and paradoxical linkages. Using these concepts, formal definitions of trivial, exceptional, and paradoxical linkages are presented and it is shown that there are two classes of paradoxical linkages. This work builds upon and extends the work of Herve´ and Fanghella and Galletti in application of group theory to analysis of kinematic chains.
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March 2003
Technical Papers
On Mobility Analysis of Linkages Using Group Theory
Jose´ Marı´a Rico Martı´nez,
Jose´ Marı´a Rico Martı´nez
Instituto Tecnolo´gico de Celaya, Dept. de Ingenierı´a Meca´nica Celaya, Gto. 38000, Me´xico
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Bahram Ravani
Bahram Ravani
Dept. of Mechanical and Aeronautical Engineering, University of California, Davis, Davis, CA 95616
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Jose´ Marı´a Rico Martı´nez
Instituto Tecnolo´gico de Celaya, Dept. de Ingenierı´a Meca´nica Celaya, Gto. 38000, Me´xico
Bahram Ravani
Dept. of Mechanical and Aeronautical Engineering, University of California, Davis, Davis, CA 95616
Contributed by the Mechanisms Committee for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received November 2001; revised August 2002. Associate Editor: J. Rastegar.
J. Mech. Des. Mar 2003, 125(1): 70-80 (11 pages)
Published Online: March 21, 2003
Article history
Received:
November 1, 2001
Revised:
August 1, 2002
Online:
March 21, 2003
Citation
Martı´nez, J. M. R., and Ravani, B. (March 21, 2003). "On Mobility Analysis of Linkages Using Group Theory ." ASME. J. Mech. Des. March 2003; 125(1): 70–80. https://doi.org/10.1115/1.1541628
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