please note that the flexible subgridding algorithm requires some numerical overhead compared to normol PBA meshing. therefor subgridding should only be used if the number of meshsells can be reduced by a factor 3 or more. 这是什么意思，是网格剖分的太密了还是怎么了？我网格设置是5,5，应该不会是太密的原因啊。希望有人知道的帮忙解答
When you applying subgridding, the minimum mesh step will be half as the normal mesh algorithm. Thus your excitation simulation time will be doubled. If your model is too simple to have more than 3 factor of subgridding, there won't be any benefit to apply this algorithm.
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非常感谢！
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