我對轉子運動區域band劃分網格，劃分網格后plot mash，但是提醒Plot 'Mesh1' becomes invalid due to no available mesh.
定子的求解區域就可以正常劃分，其他區域也是。    

我是最后求解時出現錯誤：Maxwell2d solver, process solver2d error: Internal Solver Error:  'Force/torque can not be calculated well inside the moving parts! The enclosing object (band subtracted by moving objects) might not have triangles. Make sure that there is at least one layer of elements around the moving objects which belong to the band object!'.
好像是網格劃分問題，每個區域分別plot mash，除了轉子運動求解區域之外所有區域都能plot mash，轉子運動求解區域提示是Plot 'Mesh1' becomes invalid due to no available mesh。好像就是這導致求解錯誤，但是不知道怎么解決，也不知道是怎么產生的