Abstract
In this work, a new compliant bistable mechanism design is introduced. The combined
use of pseudo-rigid-body model (PRBM) and the Elastica buckling theory is presented for
the first time to analyze the new design. This mechanism consists of the large deflecting
straight beams, buckling beams, and a slider. The kinematic analysis of this new mechanism
is studied, using nonlinear Elastica buckling beam theory, the PRBM of a large
deflecting cantilever beam, the vector loop closure equations, and numerically solving
nonlinear algebraic equations. A design method of the bistable mechanism in microdimensions
is investigated by changing the relative stiffness of the flexible beams. The
actuation force versus displacement characteristics of several cases is explored and the
full simulation results of one of the cases are presented. This paper demonstrates the
united application of the PRBM and the buckling Elastica solution for an original compliant
mechanism kinematic analysis. New compliant mechanism designs are presented to
highlight where such combined kinematic analysis is required.
Original language | English |
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Journal | Journal of Mechanical Design |
Volume | 130 |
Issue number | 4 |
Pages (from-to) | 042304 |
ISSN | 1050-0472 |
DOIs | |
Publication status | Published - 2008 |
Bibliographical note
Pagination: 042304-1-14Keywords
- large-deflection analysis
- compliant mechanisms
- buckling beam theory
- pseudo-rigid-body model
- bistable micromechanisms
- Elastica theory