NDLI: Design of a Functionally Binary Pinned-Pinned Segment for Use as a Tension-Compression Spring in Compliant Micro Mechanisms

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Jonathan, W. Wittwer Larry, L. Howell
Copyright Year	2002
Abstract	As mechanisms approach the micro scale, manufacture and assembly of linear coil springs becomes nearly impossible. For this reason, compliant functionally binary pinned-pinned segments are frequently used in place of them. A new pseudo-rigid-body model (PRBM) is presented for circular functionally binary pinned-pinned (FBPP) segments that undergo large, nonlinear deflections for both tension and compression. A new method of evaluating the maximum moment in the beam is presented, called the focal moment method, which significantly increases the accuracy of the force for a given displacement. This paper also shows how some FBPP segments can be modeled as simple linear tension/compression springs. The deflection limits for a given maximum error can be determined analytically, thereby making it possible to use optimization algorithms in the design of these springs. The effect of the size of the rigid pin joints is also discussed.
Sponsorship	Aerospace Division
Starting Page	197
Ending Page	204
Page Count	8
File Format	PDF
ISBN	0791836258
DOI	10.1115/IMECE2002-33982
Volume Number	Adaptive Structures and Materials Systems
Conference Proceedings	ASME 2002 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2002-11-17
Publisher Place	New Orleans, Louisiana, USA
Access Restriction	Subscribed
Subject Keyword	Design Errors Compression Deflection Optimization algorithms Tension Manufacturing Springs Displacement
Content Type	Text
Resource Type	Article

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