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Mechanical Sciences An open-access journal for theoretical and applied mechanics

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Mech. Sci., 3, 15-23, 2012
http://www.mech-sci.net/3/15/2012/
doi:10.5194/ms-3-15-2012
© Author(s) 2012. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
28 Mar 2012
Building block method: a bottom-up modular synthesis methodology for distributed compliant mechanisms
G. Krishnan1, C. Kim2, and S. Kota3 1Mechanical Engineering, University of Michigan, Ann Arbor, MI 48105, USA
2Mechanical Engineering, Bucknell University, Lewisburg, PA 17837, USA
3Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48105, USA
Abstract. Synthesizing topologies of compliant mechanisms are based on rigid-link kinematic designs or completely automated optimization techniques. These designs yield mechanisms that match the kinematic specifications as a whole, but seldom yield user insight on how each constituent member contributes towards the overall mechanism performance. This paper reviews recent developments in building block based design of compliant mechanisms. A key aspect of such a methodology is formulating a representation of compliance at a (i) single unique point of interest in terms of geometric quantities such as ellipses and vectors, and (ii) relative compliance between distinct input(s) and output(s) in terms of load flow. This geometric representation provides a direct mapping between the mechanism geometry and their behavior, and is used to characterize simple deformable members that form a library of building blocks. The design space spanned by the building block library guides the decomposition of a given problem specification into tractable sub-problems that can be each solved from an entry in the library. The effectiveness of this geometric representation aids user insight in design, and enables discovery of trends and guidelines to obtain practical conceptual designs.

Citation: Krishnan, G., Kim, C., and Kota, S.: Building block method: a bottom-up modular synthesis methodology for distributed compliant mechanisms, Mech. Sci., 3, 15-23, doi:10.5194/ms-3-15-2012, 2012.
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