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

Journal article (2020)

Authors

Charles J. Kim Bucknell University
W.W.P.J. van de Sande Mechatronic Systems Design - Mechanical, Maritime and Materials Engineering
Just Herder Precision and Microsystems Engineering , Mechatronic Systems Design - Mechanical, Maritime and Materials Engineering
J.L. Herder Precision and Microsystems Engineering , Mechatronic Systems Design - Mechanical, Maritime and Materials Engineering
Research Group
Mechatronic Systems Design (Mechanical, Maritime and Materials Engineering) (TU Delft)
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Published Date

2020

Language

English

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Faculty

Mechanical, Maritime and Materials Engineering

Department

Precision and Microsystems Engineering

Research Group

Mechatronic Systems Design

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.

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