MECHANICAL LOGIC GATES AND PROCESSORS USING HINGE-CONNECTED PINNED-PINNED ARCHES

Maharana, P and Shekhar, S and Ananthasuresh, GK (2023) MECHANICAL LOGIC GATES AND PROCESSORS USING HINGE-CONNECTED PINNED-PINNED ARCHES. In: Design Engineering Technical Conference, 20-9-2023 to 23-9-2023, boston.

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Abstract

Physical limitations such as extreme temperature and intense radiation restrict the use of electronic circuits in military, space, and geothermal applications. Hence, there is a need for alternative ways to process information for specific applications using mechanical devices that provide functions similar to that of electronic systems. Furthermore, mechanical devices are preferred over others as they consume less energy and dissipate less. In this paper, we present compact mechanical logic gates using connected pinned-pinned bistable arches that are stress-free in their as-fabricated state. The connected arches possess multiple stable states for different inputs and do not require external axial compression as a preload. Our mechanical logic gates consist of three pinned-pinned arches, which makes them compact compared to other designs. The three serially connected arches have alternate signs of curvatures, and they can flip and switch to their second stable state when input is given to their neighbors. We present criteria for flipping and switching as design charts using non-dimensional geometric parameters. As a first step, with the appropriate selection of geometric parameters of input and output arches, we designed, prototyped, and validated AND, NAND, OR, and NOR gates. Next, we used the mechanical gates to design logic processors. The cases of encoder and de-multiplexer are used as demonstrative examples with experimental validation. © 2023 American Society of Mechanical Engineers (ASME). All rights reserved.

Item Type:	Conference Paper
Publication:	Proceedings of the ASME Design Engineering Technical Conference
Publisher:	American Society of Mechanical Engineers (ASME)
Additional Information:	The copyright for this article belongs to American Society of Mechanical Engineers (ASME).
Keywords:	Arches; Logic gates; Military applications; Multiplexing equipment; NAND circuits; Signal encoding, AND gate; Connected arch; De-multiplexer; Encoder; Mechanical device; Mechanical logic; NAND gate; NOR gates; OR gate; Stable state, Computer circuits
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	01 Mar 2024 05:31
Last Modified:	01 Mar 2024 05:31
URI:	https://eprints.iisc.ac.in/id/eprint/83788

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