The Magnetoelastic Contribution to the Steel Internal Damping

Author:

Lo Conte Antonietta1ORCID

Affiliation:

1. Politecnico di Milano, Department of Mechanical Engineering, Via Giuseppe La Masa 1, 20156 Milan, Italy

Abstract

In this paper, the steel internal damping due to both the thermoelastic and the magnetoelastic phenomena has been investigated through a formulation based on thermodynamical potential joints with a hysteretic damping model. With the aim of focusing on the temperature transient in the solid, a first configuration has been considered, which is characterized by a steel rod with an imposed alternating pure shear strain in which only the thermoelastic contribution was studied. The magnetoelastic contribution was then introduced in a further configuration, in which a steel rod in free motion was subjected to torsion on its ends in the presence of a constant magnetic field. A quantitative assessment of the influence of the magnetoelastic dissipation in steel has been computed according to the Sablik-Jiles model by giving a comparison between the thermoelastic and the prevailing magnetoelastic damping coefficients.

Publisher

MDPI AG

Subject

General Materials Science

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