Dynamics of the Thermomagnetic Pendulum
This work provides a proof-of-concept for a novel coupled system, but the results are preliminary and lack quantitative benchmarks, making it an incremental contribution to the field of multiphysics systems.
The paper introduces a thermomagnetic pendulum as a coupled thermo-magnetic-mechanical system and develops a multiphysics model to simulate its dynamics. Simulations reveal angular torque asymmetry, rapid force reduction near the Curie point, and sustained oscillations.
A thermomagnetic pendulum is introduced as a coupled thermo-magnetic-mechanical system consisting of a ferromagnetic bob under gravity and an offset permanent magnet. Heating drives the bob temperature above and below the Curie point, causing magnetic attraction to vanish and recover as the bob moves and cools. A multiphysics model is developed in which the magnetic torque depends nonlinearly on the bob temperature field and pendulum configuration. The formulation couples transient three-dimensional heat transfer, a temperature-dependent magnetization law, and pendulum dynamics. Simulations show angular torque asymmetry, rapid force reduction near the Curie point, and sustained oscillations.