![]() |
Computational & Technology Resources
an online resource for computational,
engineering & technology publications |
|||||||||||
Civil-Comp Proceedings
ISSN 1759-3433 CCP: 84
PROCEEDINGS OF THE FIFTH INTERNATIONAL CONFERENCE ON ENGINEERING COMPUTATIONAL TECHNOLOGY Edited by: B.H.V. Topping, G. Montero and R. Montenegro
Paper 192
Non-Linear Field Computation with Hysteresis A. Schiffer and A. Iványi
Department of Information Technology, Pollack Mihály Faculty of Engineering, University of Pécs, Hungary Full Bibliographic Reference for this paper
, "Non-Linear Field Computation with Hysteresis", in B.H.V. Topping, G. Montero, R. Montenegro, (Editors), "Proceedings of the Fifth International Conference on Engineering Computational Technology", Civil-Comp Press, Stirlingshire, UK, Paper 192, 2006. doi:10.4203/ccp.84.192
Keywords: finite element modelling, hysteresis, magnetic force.
Summary
In this paper a one-dimensional computational problem has been
introduced with nonlinear hysteresis. The materials have been
modeled with the well-known
![]() The goal of this paper is to derive the magnetic field intensity H inside two infinite large plates with d=7mm and compute the magnetic forces between the plates. The governing equations of the FE model can be described by Maxwell's equations
and the following equation yielding
Reducing for the one-dimensional problem in direction z
For the nonlinear material modeling the hysteresis characteristic
where H0 the magnetic field intensity at ![]() ![]() ![]()
The model has been applied to a one-dimension problem in the z direction
with sinusoidal excitation at the boundaries. The
Dirichlet boundary conditions are defined as
The magnetic force along z direction can be calculated by the following equation
where By is the variation of the magnetic flux density induced in the material by the magnetic field along the z direction. Different numerical techniques have been considered for the time step process. The solution is calculated by combining a Comsol FE solver for the time independent, stationary nonlinear problem and a fixed-point iteration for every time step. In Figure 1 the H field deformation due to the characteristic between H and M can be seen, where different H0 values occurs different diffusion behavior.
purchase the full-text of this paper (price £20)
go to the previous paper |
||||||||||||