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Design of Compliant Mechanisms with Stress Constraints Using Topology Optimization

  • Luís Renato Meneghelli
  • Eduardo Lenz CardosoEmail author
Chapter
Part of the Advanced Structured Materials book series (STRUCTMAT, volume 43)

Abstract

Compliant mechanisms are mechanical devices that transform or transfer motion, force or energy through a single part. These mechanisms have important applications in micro electromechanical systems (MEMS) and other systems that require great accuracy in motion and micro scale. The compliant mechanisms design is performed by Topology Optimization Method, and the optimization problem is formulated to maximize strain-energy stored by mechanism, eliminating the appearance of hinges. The kinematic behavior of the mechanism is imposed through a set of constraints over some displacement degrees of freedom of interest. The elastic behavior of the compliant mechanisms is imposed using a global stress constraint and some important issues associated to stress parametrization are discussed in the realm of mechanism design. The characteristics and the feasibility of this proposal, as well as the influence of parameters related to the formulation, are presented with the aid of some examples.

Notes

Acknowledgments

All the post-processing images were generated using the free and general pre and post-processing program gmsh [7]. The linear programming problem was solved using the free SLATEC package dsplp [8].

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Copyright information

© Springer International Publishing Switzerland 2013

Authors and Affiliations

  • Luís Renato Meneghelli
    • 1
  • Eduardo Lenz Cardoso
    • 1
    Email author
  1. 1.State University of Santa CatarinaJoinvilleBrazil

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