Effect of matching buckling loads on post-buckling behavior in compliant mechanisms

Conference paper (2021)

Authors

A. Numić Student
T.W.A. Blad Micro and Nano Engineering
Fred van Keulen Computational Design and Mechanics
Research Group
Computational Design and Mechanics
More Info
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Published Date

2021

Language

English

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Research Group

Computational Design and Mechanics

Abstract

In this paper, a novel method for stiffness compensation in compliant mechanisms is investigated. This method involves tuning the ratio between the first two critical buckling loads. To this end, the relative length and width of flexures in two architectures, a stepped beam and parallel guidance, are adjusted. Using finite element analysis, it is shown that by maximizing this ratio, the actuation force for transversal deflection in post-buckling is reduced. These results were validated experimentally by identifying the optimal designs in a given space and capturing the force-deflection characteristics of these mechanisms.

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