Study of 3D Mathematical Model of Rectangular Bar under Magnetostriction

Conference: International Joint Conferences on Advances in Engineering and Technology
Author(s): Awani Bhushan, S.K. Panda, Yash Mittal, Peela Kartheek, Rajat Kumar Year: 2018
Grenze ID: 02.AET.2018.1.4 Page: 111-116

Abstract

This work addresses the Magnetostrictive effect in ferromagnetic components. Due to extensive use of\nferromagnetic materials in practical engineering such as transducers, nuclear reactors, aerospace components and electric\nmotor where magnetic field is dominant, this strain cannot be neglected. This work signifies the modelling and simulation of\nthe three dimensional rectangular bar, fixed at one end and subjected to external magnetic field. The stress and strain\ndeveloped due to magnetostrictive effect are simulated and dependency of the mathematical model has been observed on\ndifferent parameters like magnetic field and current density with respect to strain. The magnetostrictve material surrounded\nby drive coil modelled as homogenized current carrying domain. The flux leakage is minimized by modelling a steel housing\nto create closed magnetic flux path. The problem is modeled and simulated in combined study of Magnetic Field and Static\nStructure in COMSOL Multiphysics 5.2. Result obtained involves significant strain in the core which can’t be ignored in the\nengineering applications and can affect various design parameters if ignored. The strain caused due to magnetostrictive effect\nhas been verified by existing empirical strain model.

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AET - 2018