Shape Optimization Framework for the Path of the Primary Compliance Vector in Compliant Mechanisms

Hylke Kooistra, Charles J. Kim, Werner W.P.J. Van De Sande, Just L. Herder

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The primary compliance vector (PCV) captures the dominant kinematic behavior of a compliant mechanism. Its trajectory describes large deformation mechanism behavior and can be integrated in an optimization objective in detailed compliant mechanism design. This paper presents a general framework for the optimization of the PCV path, the mechanism trajectory of lowest energy, using a unified stiffness characterization and piecewise curve representation. We present a meaningful objective formulation for the PCV path that evaluates path shape, location, orientation, and length independently and apply the framework to two design examples. The framework is useful for design of planar and shell compliant mechanisms that traverse a specified mechanism trajectory and that are insensitive to load perturbations.

Original languageEnglish
Article number061012
Number of pages10
JournalJournal of Mechanisms and Robotics
Volume12
Issue number6
DOIs
Publication statusPublished - 1 Dec 2020

Keywords

  • compliant mechanisms
  • mechanism synthesis

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