A pragmatic two-scale homogenization technique for ferromagnetic cores at high frequencies
A pragmatic two-scale homogenization technique for ferromagnetic cores at high frequencies
复制标题
一种实用的高频铁磁芯两尺度均匀化技术
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
K. Hameyer
中科院分区：
文献类型：
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作者：
S. Steentjes;F. Henrotte;K. Hameyer
如果没有单个叠片层面的耦合有限元建模，就无法解决时变磁场下钢叠片中磁滞和涡流之间的强相互作用。例如，可以通过均质化方法来实现将这种叠层模型直接用于电机的有限元建模，然而，这使得必须修改有限元代码。在本文中，我们提出了一种实用的均质化方法，无需实现，只要手头的模拟代码在描述材料定律方面具有足够的灵活性。层压模型用于识别适当的宏观不可逆材料定律的参数。
The strong interaction between hysteresis and eddy currents in steel laminations subjected to a time-varying magnetic field cannot be resolved without a coupled finite element modelling at the level of a single lamination. Direct use of such a lamination model into the finite element modelling of an electrical machine, for instance, can be achieved by homogenization methods which, however, make it necessary to modify the finite element code. In this paper, we propose a pragmatic homogenization approach with no implementation required, provided the simulation code at hand has enough flexibility in the description of the material laws. The lamination model is used to identify the parameters of an appropriate macroscopic irreversible material law.