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磁衰减

Application ID: 12437


当一个导电固体材料在静磁场中运动时产生涡流。由此产生的流过导体的电流,反过来会产生 Lorentz 力。因此,在静磁场中振动的导电固体会经历结构力学衰减过程。本例中,一个悬臂梁受到一定频率的谐振,然后放置在强磁场中。本例采用的计算方法中假定结构的相对位移很小,可以忽略,各向同性材料和线弹性,因此磁场可看作是静磁场。计算了其中的磁衰减。

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