A Mechanical OR Gate Using Pinned-Pinned Bistable Arches

Banik, D and Palathingal, S and Ananthasuresh, GK and Ghosh, A (2021) A Mechanical OR Gate Using Pinned-Pinned Bistable Arches. In: 5th Asian Mechanism and Machine Science Conference, MMS 2018, 17-20 December 2019, Bengaluru; India, pp. 861-874.

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Abstract

Mechanical logic gates, whose embodiments were demonstrated in the past with rigid bodies connected with kinematic joints, are revisited in this work using compliant mechanisms. In particular, an OR gate is designed using pinned-pinned bistable arches. The compliant OR gate consists of five bistable arches arranged in such a way that a central arch acts as the output with 0 and 1 stable states while two pairs of arches, with their own 0 and 1 states, act as inputs. The arch-profiles of all arches are designed so that the forces of switching and switching back between the two stable states and the travel between the two stable configurations are as per the desired functionality. An analytical method, which is based on linear superposition of buckling mode shapes of a straight pinned-pinned column, was used to design the arch-profiles. Finite element analysis was used to validate the OR logic behaviour of the entire setup. A macroscale prototype was made using 3D printing to demonstrate the working of the OR logic. Since mechanical gates are useful at the micro-scale, using fixed-fixed arches instead of pinned-pinned arches is beneficial from the viewpoint of microfabrication.

Item Type:	Conference Paper
Publication:	Lecture Notes in Mechanical Engineering
Publisher:	Springer
Additional Information:	cited By 0; Conference of 5th Asian Mechanism and Machine Science Conference, MMS 2018 ; Conference Date: 17 December 2019 Through 20 December 2019; Conference Code:241919
Keywords:	Compliant mechanisms · Mechanism design · Micro/nano mechanisms · Systems
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	11 Nov 2020 10:29
Last Modified:	11 Nov 2020 10:29
URI:	http://eprints.iisc.ac.in/id/eprint/66240

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