On the design of a novel fully compliant spherical four-bar mechanism

On the design of a novel fully compliant spherical four-bar mechanism

In this article, a novel fully compliant spherical four-bar mechanism is introduced and its generalized design methodology is proposed. The original fully compliant mechanism lies on a plane at the free position (undeflected position); therefore, it has the advantages of ease of manufacturing, minim...

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Main Authors: Volkan Parlaktaş, Engin Tanık, Çağıl Merve Tanık
Format: Article
Language:English
Published: SAGE Publishing 2019-09-01
Series:Advances in Mechanical Engineering
Online Access:https://doi.org/10.1177/1687814019879548
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spelling doaj-e0761157f6c94ba2ab4bd4909e923af62020-11-25T03:40:17ZengSAGE PublishingAdvances in Mechanical Engineering1687-81402019-09-011110.1177/1687814019879548On the design of a novel fully compliant spherical four-bar mechanismVolkan Parlaktaş0Engin Tanık1Çağıl Merve Tanık2Department of Mechanical Engineering, Hacettepe University, Ankara, TurkeyDepartment of Mechanical Engineering, Hacettepe University, Ankara, TurkeyDepartment of Mechanical Engineering, Middle East Technical University, Ankara, TurkeyIn this article, a novel fully compliant spherical four-bar mechanism is introduced and its generalized design methodology is proposed. The original fully compliant mechanism lies on a plane at the free position (undeflected position); therefore, it has the advantages of ease of manufacturing, minimized parts, and no backlash. First, the mobility conditions of the mechanism are obtained. The dimensions of the mechanism are optimally calculated for maximum output rotation, while keeping the deflection of flexural hinges at an acceptable range. Using an optimization method, design tables are prepared to display the relationship between arc lengths and corresponding deflections of flexural hinges. Input–output torque relationship and stresses at compliant segments are obtained analytically. A mechanism dimensioned by this novel design method is analyzed by a finite element analysis method, and the analytical results are verified. Finally, the mechanism is manufactured and it is ensured that the deflections of the compliant segments are consistent with the theoretical results.https://doi.org/10.1177/1687814019879548
collection DOAJ
language English
format Article
sources DOAJ
author Volkan Parlaktaş
Engin Tanık
Çağıl Merve Tanık
spellingShingle Volkan Parlaktaş
Engin Tanık
Çağıl Merve Tanık
On the design of a novel fully compliant spherical four-bar mechanism
Advances in Mechanical Engineering
author_facet Volkan Parlaktaş
Engin Tanık
Çağıl Merve Tanık
author_sort Volkan Parlaktaş
title On the design of a novel fully compliant spherical four-bar mechanism
title_short On the design of a novel fully compliant spherical four-bar mechanism
title_full On the design of a novel fully compliant spherical four-bar mechanism
title_fullStr On the design of a novel fully compliant spherical four-bar mechanism
title_full_unstemmed On the design of a novel fully compliant spherical four-bar mechanism
title_sort on the design of a novel fully compliant spherical four-bar mechanism
publisher SAGE Publishing
series Advances in Mechanical Engineering
issn 1687-8140
publishDate 2019-09-01
description In this article, a novel fully compliant spherical four-bar mechanism is introduced and its generalized design methodology is proposed. The original fully compliant mechanism lies on a plane at the free position (undeflected position); therefore, it has the advantages of ease of manufacturing, minimized parts, and no backlash. First, the mobility conditions of the mechanism are obtained. The dimensions of the mechanism are optimally calculated for maximum output rotation, while keeping the deflection of flexural hinges at an acceptable range. Using an optimization method, design tables are prepared to display the relationship between arc lengths and corresponding deflections of flexural hinges. Input–output torque relationship and stresses at compliant segments are obtained analytically. A mechanism dimensioned by this novel design method is analyzed by a finite element analysis method, and the analytical results are verified. Finally, the mechanism is manufactured and it is ensured that the deflections of the compliant segments are consistent with the theoretical results.
url https://doi.org/10.1177/1687814019879548
work_keys_str_mv AT volkanparlaktas onthedesignofanovelfullycompliantsphericalfourbarmechanism
AT engintanık onthedesignofanovelfullycompliantsphericalfourbarmechanism
AT cagılmervetanık onthedesignofanovelfullycompliantsphericalfourbarmechanism
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