Optimal design methods that use continuum mechanics models are capable of generating suitable topology, shape, and dimensions of compliant mechanisms for desired specifications. Synthesis procedures that use linear elastic finite element models are not quantitatively accurate for large displacement situations. Also, design specifications involving nonlinear force-deflection characteristics and generation of a curved path for the output port cannot be realized with linear models. In this paper, the synthesis of compliant mechanisms is performed using geometrically nonlinear finite element models that appropriately account for large displacements. Frame elements are chosen because of ease of implementation of the general approach and their ability to capture bending deformations. A method for nonlinear design sensitivity analysis is described. Examples are included to illustrate the usefulness of the synthesis method.
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March 2001
Technical Papers
Topology Synthesis of Compliant Mechanisms for Nonlinear Force-Deflection and Curved Path Specifications
A. Saxena,
A. Saxena
Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA 19104-6315
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G. K. Ananthasuresh
G. K. Ananthasuresh
Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA 19104-6315
Search for other works by this author on:
A. Saxena
Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA 19104-6315
G. K. Ananthasuresh
Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA 19104-6315
Contributed by the Mechanisms Committee for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received Sept. 1999. Associate Editor: C. M. Gosselin.
J. Mech. Des. Mar 2001, 123(1): 33-42 (10 pages)
Published Online: September 1, 1999
Article history
Received:
September 1, 1999
Citation
Saxena , A., and Ananthasuresh, G. K. (September 1, 1999). "Topology Synthesis of Compliant Mechanisms for Nonlinear Force-Deflection and Curved Path Specifications ." ASME. J. Mech. Des. March 2001; 123(1): 33–42. https://doi.org/10.1115/1.1333096
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