The objective of this paper is to introduce and demonstrate a new method for the topology optimization of compliant mechanisms. The proposed method relies on exploiting the topological derivative, and exhibits numerous desirable properties including: (1) the mechanisms are hinge-free; (2) mechanisms with different geometric and mechanical advantages (GA and MA) can be generated by varying a single control parameter; (3) a target volume fraction need not be specified, instead numerous designs, of decreasing volume fractions, are generated in a single optimization run; and (4) the underlying finite element stiffness matrices are well-conditioned. The proposed method and implementation are illustrated through numerical experiments in 2D and 3D.
Hinge-Free Compliant Mechanism Design Via the Topological Level-Set
Contributed by the Design Automation Committee of ASME for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received June 16, 2013; final manuscript received October 24, 2014; published online January 30, 2015. Assoc. Editor: Shinji Nishiwaki.
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Krishnakumar, A., and Suresh, K. (March 1, 2015). "Hinge-Free Compliant Mechanism Design Via the Topological Level-Set." ASME. J. Mech. Des. March 2015; 137(3): 031406. https://doi.org/10.1115/1.4029335
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