The bistable snap-through behavior of a compressed beam is modeled and measured experimentally as its supporting surface is bent through positive and negative curvatures. When the supporting angle of the beam exceeds a critical angle, bistability is lost and only one stable state is supported. The critical angle is controlled only by the initial compressive stress in the beam, and we report a nondimensionalized calculation method for this angle. This large-deflection nonlinear model provides design rules for low-power sensors and actuators that can measure and control surface curvature from the micro- to macroscale.
Analysis of a Compressed Bistable Buckled Beam on a Flexible Support
Manuscript received November 21, 2013; final manuscript received April 17, 2014; accepted manuscript posted April 22, 2014; published online May 5, 2014. Assoc. Editor: Taher Saif.
Beharic, J., Lucas, T. M., and Harnett, C. K. (June 5, 2014). "Analysis of a Compressed Bistable Buckled Beam on a Flexible Support." ASME. J. Appl. Mech. August 2014; 81(8): 081011. https://doi.org/10.1115/1.4027463
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