Vibration based energy harvesting performance of magneto-electro-elastic beams reinforced with carbon nanotubes

Arjun Siddharth Mangalasseri, Vinyas Mahesh, Sriram Mukunda, Vishwas Mahesh, Sathiskumar A Ponnusami, Dineshkumar Harursampath, Abdelouahed Tounsi

Abstract

This article investigates the energy harvesting characteristics of a magneto-electro-elastic (MEE) cantilever beam reinforced with carbon nanotubes (CNT) under transverse vibration. To this end, the well-known lumped parameter model is used to represent the coupled multiphysics problem mathematically. The proposed system consists of the MEE-CNT layer on top and an inactive substrate layer at the bottom. The substrate is considered to be made of either an isotropic or composite material. Basic laws such as Gauss's Law, Newton's Law and Faraday's Law are used to arrive at the governing equations. Surface electrodes across the beam are used to harvest the electric potential produced, together with a wound coil, for the generated magnetic potential. The influence of various distributions of the CNT and its volume fraction, substrate material, length-to-thickness ratio, and thickness ratio of substrate to MEE layer on the energy harvesting behaviour is thoroughly discussed. Further, the effect of external resistances and changes in substrate material on the response is analysed and reported. The article aims to explore smart material-based energy harvesting systems, focusing on their behaviour when reinforced with carbon nanotubes. The results of this study may lead to an improved understanding of the design and analysis of CNT-based smart structures.

Key Words

carbon nanotube; coupled response; energy harvester; magneto-electro-elastic; volume fractions

Address

Arjun Siddharth Mangalasseri and Dineshkumar Harursampath: Department of Aerospace Engineering, Indian Institute of Science (IISc), Bangalore – 560012, India Vinyas Mahesh and Sathiskumar A Ponnusami: Department of Engineering, City, University of London, London, EC1V 0HB, United Kingdom Sriram Mukunda: Department of Mechanical Engineering, Nitte Meenakshi Institute of Technology, Bangalore-560064, India Vishwas Mahesh: Department of Aerospace Engineering, Indian Institute of Science (IISc), Bangalore – 560012, India/ Department of Industrial Engineering and Management, Siddaganga Institute of Technology, Tumkur – 572103, India Abdelouahed Tounsi: YFL (Yonsei Frontier Lab), Yonsei University, Seoul, Korea/ Department of Civil and Environmental Engineering, King Fahd University of Petroleum & Minerals, 31261 Dhahran, Eastern Province, Saudi Arabia/ Material and Hydrology Laboratory, University of Sidi Bel Abbes, Faculty of Technology, Civil Engineering Department, Algeria

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