关于永磁机构的磁力分析请大家指点
本帖最后由 torrent520 于 2014-2-20 10:50 编辑最近做了一个永磁机构的静态保持力的分析。
因为是圆周对称结构，在分析时取了1/8结构进行计算。
生成的命令流没有完全精简，请见谅。
请教大家一个问题，建模的时候设置动静铁芯之间的气隙，如果是0，加载磁力条件时会提示边界条件出错，因此我不得不设置气隙为0.1mm，这是什么原因呢？
永磁瓦片设置导磁率为1.05，X方向矫顽力850A/mm，A3钢的铁芯导磁率200，空气导磁率1.
/BATCH
~SATIN,2,SAT,'..\..\ANSYS\',SOLIDS,0
/NOPR
/GO
/NOPR
/PMETH,OFF,1
KEYW,PR_SET,1
KEYW,PR_STRUC,0
KEYW,PR_THERM,0
KEYW,PR_FLUID,0
KEYW,PR_ELMAG,1
KEYW,MAGNOD,1
KEYW,MAGEDG,0
KEYW,MAGHFE,0
KEYW,MAGELC,0
KEYW,PR_MULTI,0
KEYW,PR_CFD,0
/GO
ET,1,SOLID98,10
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,MURX,1,,1.05
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,MGXX,1,,850
MPDATA,MGYY,1,,
MPDATA,MGZZ,1,,
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,MURX,2,,200
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,MURX,3,,200
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,MURX,4,,1
FLST,2,5,6,ORDE,2
FITEM,2,1
FITEM,2,-5
VOVLAP,P51X
CM,_Y,VOLU
VSEL, , , , 6
CM,_Y1,VOLU
CMSEL,S,_Y
CMSEL,S,_Y1
VATT, 1, , 1, 0
CMSEL,S,_Y
CMDELE,_Y
CMDELE,_Y1
FLST,5,2,6,ORDE,2
FITEM,5,7
FITEM,5,-8
CM,_Y,VOLU
VSEL, , , ,P51X
CM,_Y1,VOLU
CMSEL,S,_Y
CMSEL,S,_Y1
VATT, 2, , 1, 0
CMSEL,S,_Y
CMDELE,_Y
CMDELE,_Y1
CM,_Y,VOLU
VSEL, , , , 5
CM,_Y1,VOLU
CMSEL,S,_Y
CMSEL,S,_Y1
VATT, 3, , 1, 0
CMSEL,S,_Y
CMDELE,_Y
CMDELE,_Y1
CM,_Y,VOLU
VSEL, , , , 9
CM,_Y1,VOLU
CMSEL,S,_Y
CMSEL,S,_Y1
VATT, 4, , 1, 0
CMSEL,S,_Y
CMDELE,_Y
CMDELE,_Y1
SMRTSIZE,6
MSHKEY,0
MSHAPE,1,3d
FLST,5,5,6,ORDE,2
FITEM,5,5
FITEM,5,-9
CM,_Y,VOLU
VSEL, , , ,P51X
CM,_Y1,VOLU
CHKMSH,'VOLU'
CMSEL,S,_Y
VMESH,_Y1
CMDELE,_Y
CMDELE,_Y1
CMDELE,_Y2
VSEL,S, , , 5
ESLV,S
CM,XT,ELEM
FINISH
/SOL
FMAGBC,'XT'
ALLSEL,ALL
MAGSOLV,2, , ,0.001,25,0
FINISH
/POST1
FMAGSUM,'XT'
输出的保持力文本内容：
SUMMARY OF FORCES BY VIRTUAL WORK
Load Step Number: 1.
Substep Number: 1.
Time: 0.1000E+01
Units of Force: ( N )
Component Force-X Force-Y Force-Z
XT -0.98385E+00 0.76781E+03 -0.14809E+01
___________________________________________________
SUMMARY OF FORCES BY MAXWELL STRESS TENSOR
Units of Force:( N )
Component Force-X Force-Y Force-Z
XT 0.14718E-01 0.72834E+03 -0.14316E-01
_____________________________________________________
Note: Maxwell forces are in the Global Cartesian coordinate system.
Virtual work forces are in the element ESYS coordinate system.
The following element table items are available for printing and
plotting of the forces obtained by Virtual Work and the Maxwell Stress
Tensor methods.
Element Item Name Method Direction
FVW_X Virtual Work X
FMX_X Maxwell Stress X
FVW_Y Virtual Work Y
FMX_Y Maxwell Stress Y
FVW_Z Virtual Work Z
FMX_Z Maxwell Stress Z
___________________________________________________________________
我是用 ansys 或者是comsol 计算通电线圈对 永磁铁的作用力，但在ansys中如何才能定义磁化饱和的永磁铁呢，楼主可以告知吗？谢谢！ maxwell力和virtual work 力都需要外层的空气单元
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