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Shorya Awtar1 e-mail: awtar@umich.edu

Summary: Shorya Awtar1
e-mail: awtar@umich.edu
Kevin Shimotsu
Shiladitya Sen
Mechanical Engineering,
University of Michigan,
2350 Hayward Street,
Ann Arbor, MI 48109
Elastic Averaging in Flexure
Mechanisms: A Three-Beam
Parallelogram Flexure Case
Redundant constraints are generally avoided in mechanism design because they can lead
to binding or loss in expected mobility. However, in certain distributed-compliance flex-
ure mechanism geometries, this problem is mitigated by the phenomenon of elastic aver-
aging. Elastic averaging is a design paradigm that, in contrast with exact constraint
design principles, makes deliberate and effective use of redundant constraints to improve
performance and robustness. The principle of elastic averaging and its advantages are
illustrated in this paper by means of a three-beam parallelogram flexure mechanism,
which represents an overconstrained geometry. In a lumped-compliance configuration,


Source: Awtar, Shorya - Department of Mechanical Engineering, University of Michigan


Collections: Engineering