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ENERGY-CONSISTENT FINITE ELEMENT MODELLING OF FERROMAGNETIC HYSTERESIS

机译:铁磁滞回的能量一致有限元建模

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In this article we propose a macroscopic model for ferromagnetic hysteresis that is well-suited for finite element implementation. The model is readily vectorial and relies on a consistent thermodynamic formulation. In particular, the stored magnetic energy and the dissipated energy are known at all times, and not solely after the completion of closed hysteresis loops as is usually the case. The obtained incremental formulation is vari-ationally consistent, i.e., all internal variables follow from the minimization of a thermodynamic potential. This variational approach is directly inspired from the kinematic hardening theory of plasticity, which opens the door for novel energy-consistent coupled mechanical/electromagnetic models.
机译:在本文中,我们提出了一种适用于有限元实现的铁磁滞后的宏观模型。该模型易于矢量化,并且依赖于一致的热力学公式。特别是,存储的磁能和耗散的能量始终是已知的,而不是像通常情况那样仅在闭合磁滞回线完成后才知道。所获得的增量配方在变化上是一致的,即,所有内部变量都来自热力学势的最小化。这种变分方法是直接受可塑性运动硬化理论的启发,该理论为新型的能量一致的机械/电磁耦合模型打开了大门。

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