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TECHNICAL PAPERS

Bistable Configurations of Compliant Mechanisms Modeled Using Four Links and Translational Joints

[+] Author and Article Information
Brian D. Jensen

Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109

Larry L. Howell

Department of Mechanical Engineering, Brigham Young University, Provo, UT 84602e-mail: lhowell@byu.edu

J. Mech. Des 126(4), 657-666 (Aug 12, 2004) (10 pages) doi:10.1115/1.1760776 History: Received October 01, 2003; Revised January 01, 2004; Online August 12, 2004
Copyright © 2004 by ASME
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References

Figures

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A double-slider mechanism model with the two sliders joined by a link. Springs at each joint represent compliant segments modeled with the pseudo-rigid-body model.
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A bistable double-slider mechanism with a link joining the sliders and a compliant equivalent. The second stable position and one of the unstable positions are shown.
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A model of a fully compliant double-slider mechanism. Each compliant segment is modeled by a joint with a spring attached to it.
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A bistable double-slider mechanism with a pin joint joining the sliders, and a compliant equivalent. e2 is zero in this illustration. The unstable and second stable positions are shown in dashed lines.
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A model of a general compliant slider-crank or slider-rocker mechanism
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A bistable slider-rocker with a spring at location 1. The unstable position and second stable position are also shown, as well as a sample compliant mechanism.
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A bistable slider-rocker with a spring placed at location 2, and a compliant equivalent
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A bistable slider-crank with a spring at location 3. The second stable position and one of the unstable positions are shown in dashed lines. An equivalent compliant mechanism is also shown.
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A bistable slider-crank with the two stable positions and one unstable position shown. In this case, the spring is placed in position 4.
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Possible mechanisms that could be used to make a bistable CD ejection actuator. (a) and (b) are the two types of double-slider mechanisms; (c) and (d) are a slider-crank and slider-rocker mechanism, respectively.
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The resulting compliant bistable mechanism, based on the double-slider with a pin joint joining the sliders. A pseudo-rigid-body model mechanism is shown in dashed lines.
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Five different possible configurations of the slider-crank or slider-rocker class which could meet the design specifications. The second positions of (d) and (e) are included to aid in visualization.
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The conceptual design for the bistable electrical switch

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