0
research-article

Building block based spatial topology synthesis method for large stroke flexure hinges

[+] Author and Article Information
Mark Naves

Chair of Precision Engineering University of Twente, P.O. Box 217 7500 AE Enschede, The Netherlands
m.naves@utwente.nl

Dannis Brouwer

Chair of Precision Engineering University of Twente, P.O. Box 217 7500 AE Enschede, The Netherlands
d.m.brouwer@utwente.nl

Ronald G. K. M. Aarts

Chair of Structural Dynamics, Acoustics & Control University of Twente, P.O. Box 217 7500 AE Enschede, The Netherlands
r.g.k.m.aarts@utwent.nl

1Corresponding author.

ASME doi:10.1115/1.4036223 History: Received November 01, 2016; Revised March 04, 2017

Abstract

Large stroke flexure mechanisms inherently lose stiffness in supporting directions when deflected. A systematic approach to synthesize such hinges is currently lacking. In this paper a new building block based spatial topology optimization method is presented for optimizing large stroke flexure hinges. This method consists of a layout variation strategy based on a building block approach combined with a shape optimization to obtain the optimal design tuned for a specific application. A derivative free shape optimization method is adapted to include multiple system boundaries and constraints to optimize high complexity flexure mechanisms in a broad solution space. To obtain the optimal layout, three predefined 3-D “building blocks” are proposed which are consecutively combined to find the best layout with respect to specific design criteria. More specifically, this new method is used to optimize a flexure hinge aimed at maximizing the frequency of the first unwanted vibration mode. The optimized topology shows an increase in frequency of a factor ten with respect to the customary three flexure cross hinge, which represents a huge improvement in performance. The numerically predicted natural frequencies and mode shapes have been verified experimentally.

Copyright (c) 2017 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In