A Tunable Variable-Torque Compliant Hinge Using Open-Section Shells

Hampali, S and Anoosha Pai, S and Ananthasuresh, GK (2020) A Tunable Variable-Torque Compliant Hinge Using Open-Section Shells. In: Journal of Mechanisms and Robotics, 12 (6).

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Abstract

This paper is concerned with a compliant-hinge mechanism that can provide a wide range of torque-Angle profiles. The mechanism consists of thin-walled open-section shells that are subjected to combined twisting and bending. A pair of open-section shells is so arranged as to get a large rotation about a virtual axis with high stiffness along other axes. A replaceable cam-like guideway regulates the bending of the open-section shells as they twist, thereby generating the desired torque profile. An energy-based, graphical, and computational design method is formulated to obtain the guideway profile for a specified torque profile. A physical prototype is constructed for an assistive chair for the elderly to demonstrate the variable-Torque output and the efficacy of the hinge. © 2020 BioMed Central Ltd.. All rights reserved.

Item Type:	Journal Article
Publication:	Journal of Mechanisms and Robotics
Publisher:	American Society of Mechanical Engineers (ASME)
Additional Information:	The copyright of this article belongs to American Society of Mechanical Engineers (ASME)
Keywords:	Agricultural robots; Guideways; Hinges; Shells (structures); Thin walled structures, Computational design methods; Energy-based; High stiffness; Hinge mechanisms; Large rotation; Open section; Torque angle; Variable torque, Torque
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	15 Dec 2020 06:28
Last Modified:	15 Dec 2020 06:28
URI:	http://eprints.iisc.ac.in/id/eprint/67077

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