Session: CIE-07-02 - CAPPD: Computer-Aided Product and Process Development

Paper Number: 97864

97864 - Compact Mechanical Logic Gates Using Connected, Pinned-Pinned, Shallow Arches 

Electronic logic circuits have high-performance efficiency, but they are vulnerable to unstable performance and failure under harsh environmental conditions like extreme temperature and intense radiation. These physical limitations restrict the use of electronic circuits in military, space, and geothermal applications. Hence, researchers are motivated to look for alternative ways to process information for specific applications using mechanical devices which provide functions similar to the electronic digital systems. In this work, we propose compact mechanical logic gates using pinned-pinned connected 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 any external axial compression as a preload. Our mechanical logic gates consist of three pinned-pinned arches, which makes the design compact compared to other designs. In this work, we provide a feasible space of switchability based on the height and thickness of input and output arches, which can be used to obtain AND and OR gates for various applications. It is also noted that the AND gate and the OR gate can also be served as a NOR gate and NAND gate, respectively by changing their input polarity. Based on the feasible space, we designed and 3D-printed compact mechanical logic gates (AND and OR gates) using pinned-pinned connected arches and verified their functionality. We also explain the time response of input, output, and strain energy of these logic gates using ABAQUS finite element software.

Presenting Author: Priyabrata Maharana Indian Institute of Science, Bengaluru

Presenting Author Biography: Mr. Priyabrata Maharana is currently in his 5th year of his Ph.D. at the Indian Institute of Science, Bengaluru. He received his Master's degree from IIT Guwahati in the year 2017. His main research area is compliant mechanism, instability analysis, optimization, and nonlinear dynamics.

Authors:

Priyabrata Maharana Indian Institute of Science, Bengaluru
G. K. Ananthasuresh Indian Institute of Science, Bengaluru