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.
Topology Synthesis of Compliant Mechanisms for Nonlinear Force-Deflection and Curved Path Specifications
Contributed by the Mechanisms Committee for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received Sept. 1999. Associate Editor: C. M. Gosselin.
- Views Icon Views
- Share Icon Share
- Search Site
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
Download citation file: