To improve the vibration isolation performance under low frequency excitation, a negative
stiffness magnetic spring (NSMS) is employed to reduce the resonance frequency of the …

Analytical modeling is still a very effective manner to calculate the magnetic fields in
permanent magnet devices. From these magnetic fields, device quantities, eg, force, emf, or …

In this paper, a theoretical analysis of an axial magnetic coupling is presented, leading to
new closed-form expressions for the magnetic axial force and torque. These expressions are …

In this paper, we present analytic-numerical expressions for the calculation of the mutual
inductance of two axisymmetric circular coils with rectangular cross section in air. This …

This paper presents an approach for quick calculation of steady-state and transient
performances of an axial-field eddy-current coupling. Based on a 2-D approximation of the …

With the advent of magnetic gears, researchers have developed a new breed of permanent-
magnet machines. These magnetic-geared permanent-magnet machines artfully incorporate …

A formula is presented for computing the coupling between magnetic gears. This formula,
which is based on two-dimensional analytical analysis, is expressed as a finite sum of …

The Mechatronics and Dynamic Modelling Laboratory of the Department of Industrial
Engineering, University of Florence, as a partner of THESAURUS (Italian acronym for …

A recently-published equation for calculating the force between coaxial cylindrical magnets
is presented in simplified form. The revised equation is now very compact: it is defined with …

Most of the systems working by magnet interactions can be calculated by superposition of
the interactions between parallelepiped elementary magnets. Each elementary magnet is …