Magnetostatic Spring Softening and Stiffening in Magneto-Mechanical Resonator Systems

Inbar Grinberg, Anudeep Mangu, Christopher W. Peterson, Eli Wilken-Resman, Jennifer T. Bernhard, Gaurav Bahl

Research output: Contribution to journalArticlepeer-review


Integrating magnets into resonant mechanical systems allows for intriguing capabilities, such as the ability to tune the mechanical resonance frequency or induce coupling between resonators without any physical contact. Here, we present analytical models as well as the experimental study of an integrated magneto-mechanical system. Using a point dipole approximation, we explore the magneto-static spring effect, which can either soften or stiffen a spring depending on dipole orientation and spatial position of the magnets. We use translational and rotational resonance as commonly encountered demonstrative cases and, experimentally, demonstrate both the spring softening and stiffening effects.

Original languageEnglish (US)
Article number8699123
JournalIEEE Transactions on Magnetics
Issue number8
StatePublished - Aug 2019


  • Magneto-mechanics
  • nonlinear dynamics
  • spring softening
  • spring stiffening

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


Dive into the research topics of 'Magnetostatic Spring Softening and Stiffening in Magneto-Mechanical Resonator Systems'. Together they form a unique fingerprint.

Cite this