On solution to an optimal shape design problem in 3-dimensional linear magnetostatics

Dalibor Lukáš

Applications of Mathematics (2004)

  • Volume: 49, Issue: 5, page 441-464
  • ISSN: 0862-7940

Abstract

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In this paper we present theoretical, computational, and practical aspects concerning 3-dimensional shape optimization governed by linear magnetostatics. The state solution is approximated by the finite element method using Nédélec elements on tetrahedra. Concerning optimization, the shape controls the interface between the air and the ferromagnetic parts while the whole domain is fixed. We prove the existence of an optimal shape. Then we state a finite element approximation to the optimization problem and prove the convergence of the approximated solutions. In the end, we solve the problem for the optimal shape of an electromagnet that arises in the research on magnetooptic effects and that was manufactured afterwards.

How to cite

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Lukáš, Dalibor. "On solution to an optimal shape design problem in 3-dimensional linear magnetostatics." Applications of Mathematics 49.5 (2004): 441-464. <http://eudml.org/doc/33194>.

@article{Lukáš2004,
abstract = {In this paper we present theoretical, computational, and practical aspects concerning 3-dimensional shape optimization governed by linear magnetostatics. The state solution is approximated by the finite element method using Nédélec elements on tetrahedra. Concerning optimization, the shape controls the interface between the air and the ferromagnetic parts while the whole domain is fixed. We prove the existence of an optimal shape. Then we state a finite element approximation to the optimization problem and prove the convergence of the approximated solutions. In the end, we solve the problem for the optimal shape of an electromagnet that arises in the research on magnetooptic effects and that was manufactured afterwards.},
author = {Lukáš, Dalibor},
journal = {Applications of Mathematics},
keywords = {optimal shape design; finite element method; magnetostatics; magnetooptics; optimal shape design; finite element method; magnetostatics; magnetooptics},
language = {eng},
number = {5},
pages = {441-464},
publisher = {Institute of Mathematics, Academy of Sciences of the Czech Republic},
title = {On solution to an optimal shape design problem in 3-dimensional linear magnetostatics},
url = {http://eudml.org/doc/33194},
volume = {49},
year = {2004},
}

TY - JOUR
AU - Lukáš, Dalibor
TI - On solution to an optimal shape design problem in 3-dimensional linear magnetostatics
JO - Applications of Mathematics
PY - 2004
PB - Institute of Mathematics, Academy of Sciences of the Czech Republic
VL - 49
IS - 5
SP - 441
EP - 464
AB - In this paper we present theoretical, computational, and practical aspects concerning 3-dimensional shape optimization governed by linear magnetostatics. The state solution is approximated by the finite element method using Nédélec elements on tetrahedra. Concerning optimization, the shape controls the interface between the air and the ferromagnetic parts while the whole domain is fixed. We prove the existence of an optimal shape. Then we state a finite element approximation to the optimization problem and prove the convergence of the approximated solutions. In the end, we solve the problem for the optimal shape of an electromagnet that arises in the research on magnetooptic effects and that was manufactured afterwards.
LA - eng
KW - optimal shape design; finite element method; magnetostatics; magnetooptics; optimal shape design; finite element method; magnetostatics; magnetooptics
UR - http://eudml.org/doc/33194
ER -

References

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  1. 10.1007/BF01447854, Appl. Math. Optim. 2 (1975), 130–169. (French) (1975) MR0443372DOI10.1007/BF01447854
  2. Computational Electromagnetism. Variational Formulations, Complementarity, Edge Elements, Academic Press, Orlando, 1998. (1998) Zbl0945.78001MR1488417
  3. Finite Elements. Theory, Fast Solvers, and Applications in Solid Mechanics, Cambridge University Press, Cambridge, 2001. (2001) Zbl0976.65099MR1827293
  4. Primal hybrid formulation of an elliptic equation in smooth optimal shape problems, Adv. Math. Sci. Appl. 5 (1995), 139–162. (1995) MR1325963
  5. On the density of smooth functions in certain subspaces of Sobolev spaces, Comment. Math. Univ. Carolin. 14 (1973), 609–622. (1973) MR0336317
  6. Curves and Surfaces for Computer-Aided Geometric Design: A Practical Guide, Academic Press, Boston, 1997. (1997) Zbl0919.68120MR1412572
  7. Finite Element Methods for Navier-Stokes equations. Theory and Algorithms, Springer-Verlag, Berlin, 1986. (1986) MR0851383
  8. 10.1007/s002110050248, Numer. Math. 75 (1997), 447–472. (1997) MR1431211DOI10.1007/s002110050248
  9. 10.1007/s007910050002, Comput. Vis. Sci. 1 (1997), 15–25. (1997) DOI10.1007/s007910050002
  10. A fictitious domain approach for a class of Neumann boundary value problems with applications in shape optimization, East-West J.  Numer. Math. 8 (2000), 1–23. (2000) MR1757143
  11. Finite Element Approximation for Optimal Shape, Material and Topology Design, 2nd ed, Wiley, Chichester, 1996. (1996) MR1419500
  12. Multilevel preconditioning for mixed problems in three dimensions, PhD. thesis, University of Augsburg, 1996. (1996) Zbl0851.65089MR1399324
  13. Anisotropy of the quadratic magneto-optical effects in a cubic crystal, Proceedings of SPIE, Vol. 4016, 2000, pp. 54–59. (2000) 
  14. Mathematical and Numerical Modelling in Electrical Engineering. Theory and Practice, Kluwer Academic Publishers, Dordrecht, 1996. (1996) MR1431889
  15. Scientific computing tools for 3d magnetic field problems, In: The Mathematics of Finite Elements and Applications. Proceedings of the 10th conference MAFELAP, 1999, J R. Whiteman (ed.), 2000, pp. 239–258. (2000) MR1801980
  16. Shape optimization of homogeneous electromagnets, Scientific Computing in Electrical Engineering. Lect. Notes Comput. Sci. Eng. Vol. 18, U.  van Rienen, M. Günther, and D.  Hecht (eds.), 2001, pp. 145–152. (2001) Zbl1013.78012
  17. Optimal Shape Design in Magnetostatics. PhD. thesis, VŠB-Technical University, Ostrava, 2003. (2003) 
  18. Shape optimization of homogeneous electromagnets and their application to measurements of magnetooptic effects, Records of COMPUMAG (2001), 156–157. (2001) 
  19. An object-oriented library for the shape optimization problems governed by systems of linear elliptic partial differential equations, Transactions of the VŠB-Technical University Ostrava 1 (2001), 115–128. (2001) 
  20. Multilevel solvers for 3-dimensional optimal shape design with an application to magneto-optics, Proceedings of the 9th International Symposium on Microwave and Optical Technology (ISMOT  2003, Ostrava), SPIE Vol. 5445, 2004, pp. 235–239. (2004) 
  21. Measure and Integral, MATFYZPRESS, Praha, 1995. (1995) MR2316454
  22. 10.1007/BF01396415, Numer. Math. 35 (1980), 315–341. (1980) DOI10.1007/BF01396415
  23. Optimal Shape Design for Elliptic Systems. Springer Series in Computational Physics, Springer-Verlag, New York, 1984. (1984) MR0725856
  24. Optical guided modes in sandwiches with ultrathin metallic films, Journal of Magnetism and Magnetic Materials 198–199 (1999), 683–685. (1999) 
  25. 10.1063/1.1449436, J.  Appl. Phys. 91 (2002), 7293–7295. (2002) DOI10.1063/1.1449436
  26. 10.1007/BFb0064470, Lecture Notes in Math. 606 (1977), 292–315. (1977) MR0483555DOI10.1007/BFb0064470
  27. An algebraic multigrid method for finite element discretizations with edge elements, Numer. Linear Algebra Appl. 9 (1997), 223–238. (1997) MR1893828
  28. 10.1007/s007910050004, Comput. Vis. Sci. 1 (1997), 41–52. (1997) DOI10.1007/s007910050004
  29. Optimization of die press model, Proceedings of the TEAM Workshop in the Sixth Round (Okayama, Japan), March 1996. 
  30. Numerical methods in computational electrodynamics, Linear Systems in Practical Applications, Lect. Notes Comp. Sci. Engrg. Vol.  12, Springer-Verlag, Berlin, 2001. (2001) Zbl0977.78023MR1790270
  31. Modern Magnetooptics and Magnetooptical Materials, Institute of Physics Publishing, Bristol and Philadelphia, 1997. (1997) 

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