Skip to Main content Skip to Navigation
Conference papers

Modeling of magnetic field perturbations on the balance-spring of a mechanical watch

Abstract : A magnetic field is a major enemy of a mechanical watch. This field may modify the structure of the balance-spring and change its resonance frequency. As a consequence, the watch loses its accuracy. The aim of this work is to quantify the impact of the magnetic field to the balance-spring resonance using a finite element approach. This coupled magneto-mechanical problem implies magnetic forces computation while accounting for a large rotation of the spring. An original algorithm including a dynamic mechanical time-stepping scheme is proposed to quantify the change of the resonance frequency. Index Terms-Mechanical watch, resonance frequency, coupled magneto-mechanic problem.
Document type :
Conference papers
Complete list of metadatas

Cited literature [6 references]  Display  Hide  Download

https://hal-centralesupelec.archives-ouvertes.fr/hal-01235591
Contributor : Lionel Pichon <>
Submitted on : Tuesday, March 17, 2020 - 4:27:31 PM
Last modification on : Wednesday, September 16, 2020 - 5:49:21 PM
Long-term archiving on: : Thursday, June 18, 2020 - 2:55:04 PM

File

CM2015_MechanicalWatch2.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : hal-01235591, version 1

Citation

Refzul Khairi, Xavier Mininger, Romain Corcolle, Lionel Pichon, Laurent Bernard. Modeling of magnetic field perturbations on the balance-spring of a mechanical watch. 20th International Conference on Computation of Electromagnetic Fields (Compumag 2015), Jun 2015, Montréal, Canada. ⟨hal-01235591⟩

Share

Metrics

Record views

239

Files downloads

114