本帖最后由 heuwangwei 于 2012-4-23 15:07 编辑
要分析一个厚度方向极化的压电陶瓷,半径12mm,厚度3mm,求模态,用2维单元和3维单元,差别很大。
2维命令流
finish
/clear,all
/prep7
D=3e-3
R=12e-3
ET,1,13
KEYOPT,1,1,7
KEYOPT,1,3,1
MPTEMP,,,,,,,,
MPTEMP,1,0
TB,ANEL,1,1,21,0
TBTEMP,0
TBDATA,,13.9e10,7.78e10,7.43e10,,,
TBDATA,,13.9e10,7.43e10,,,,11.5e10
TBDATA,,,,,3.06e10,,
TBDATA,,2.56e10,,2.56e10,,,
MPDATA,PERX,1,,370
MPDATA,PERY,1,,370
MPDATA,PERZ,1,,635
TB,PIEZ,1,,,0
TBMODIF,1,3,-5.2
TBMODIF,2,3,-5.2
TBMODIF,3,3,15.1
TBMODIF,5,2,12.7
TBMODIF,6,1,12.7
MPDATA,DENS,1,,7500
RECTNG,,R,,D,
LSEL,S,LENGTH,,R
LESIZE,ALL,,,20
LSEL,S,LENGTH,,D
LESIZE,ALL,,,5
ALLSEL
MSHAPE,0,2D
MSHKEY,1
AMESH,ALL
/SOL
ANTYPE,2
MODOPT,LANB,100
MXPAND,100, , ,0
MODOPT,LANB,100,40,1000000, ,OFF
solve
3维命令流
finish
/clear,all
/prep7
D=3e-3
R=12e-3
ET,1,5
KEYOPT,1,1,3
MPTEMP,,,,,,,,
MPTEMP,1,0
TB,ANEL,1,1,21,0
TBTEMP,0
TBDATA,,13.9e10,7.78e10,7.43e10,,,
TBDATA,,13.9e10,7.43e10,,,,11.5e10
TBDATA,,,,,3.06e10,,
TBDATA,,2.56e10,,2.56e10,,,
MPDATA,PERX,1,,370
MPDATA,PERY,1,,370
MPDATA,PERZ,1,,635
TB,PIEZ,1,,,0
TBMODIF,1,3,-5.2
TBMODIF,2,3,-5.2
TBMODIF,3,3,15.1
TBMODIF,5,2,12.7
TBMODIF,6,1,12.7
MPDATA,DENS,1,,7500
CYLIND,R, ,0,D,0,90,
LSEL,S,LENGTH,,R
LESIZE,ALL,,,20
LSEL,S,LENGTH,,D
LESIZE,ALL,,,5
ALLSEL
MSHAPE,0,3D
MSHKEY,1
VMESH,ALL
DA,4,SYMM
DA,5,SYMM
/SOL
ANTYPE,2
MODOPT,LANB,100
MXPAND,100, , ,0
MODOPT,LANB,100,40,1000000, ,OFF
solve
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