In building upon the unique properties of his famous four-bar loop and its planar and spherical counterparts, Bennett proposed a planar kinematic network of twelve bars, eight hinges and six loops with two degrees of mobility. It has since been studied in respect of its surprising variety of closure modes. This paper is concerned with a systematic investigation of the range of closures and their transitional states while retaining the form which exhibits only anti-parallelogrammatic loops. The opportunity is taken to introduce a 24-bar network based upon the scheme of concentric circles adopted by Bennett.
The Closure Modes of Bennett’s Twelve-Bar Planar Linkage
Contributed by the Mechanisms and Robotics Committee for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received April 2003; revised October 2003. Associate Editor: G. R. Pennock.
Baker, J. E. (October 1, 2003). "The Closure Modes of Bennett’s Twelve-Bar Planar Linkage ." ASME. J. Mech. Des. May 2004; 126(3): 464–469. https://doi.org/10.1115/1.1711820
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