HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
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 metadata

Cited literature [6 references]  Display  Hide  Download

https://hal-centralesupelec.archives-ouvertes.fr/hal-01235591
Contributor : Lionel Pichon Connect in order to contact the contributor
Submitted on : Tuesday, March 17, 2020 - 4:27:31 PM
Last modification on : Friday, February 18, 2022 - 3:37:07 AM
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

80

Files downloads

78