A three-dimensional finite element evaluation of magnetic attachment attractive force and the influence of the magnetic circuit

Hirokazu Kumano, Yoshinori Nakamura, Ryo Kanbara, Yukyo Takada, Kent T. Ochiai, Yoshinobu Tanaka

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The finite element method has been considered to be excellent evaluative technique to study magnetic circuit optimization. The present study analyzed and quantitatively evaluated the different effects of magnetic circuit on attractive force and magnetic flux density using a three-dimensional finite element method for comparative evaluation. The diameter of a non-magnetic material in the shield disk of a magnetic assembly was variably increased by 0.1 mm to a maximum 2.0 mm in this study design. The analysis results demonstrate that attractive force increases until the diameter of the non-magnetic spacing material reaches a diameter of 0.5 mm where it peaks and then decreases as the overall diameter increases over 0.5 mm. The present analysis suggested that the attractive force for a magnetic attachment is optimized with an appropriate magnetic assembly shield disk diameter using a non-magnetic material to effectively change the magnetic circuit efficiency and resulting retention.

Original languageEnglish
Pages (from-to)669-673
Number of pages5
JournalDental materials journal
Volume33
Issue number5
DOIs
Publication statusPublished - 2014 Oct 1

Keywords

  • Attractive force
  • Finite element method
  • Magnetic analysis
  • Magnetic attachment

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)

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