ANSYS谐响应分析求助
使用ANSYS进行谐响应分析,得不出结果,不知道是什么原因。PS:已经做过模态分析,并得出固有振动模态的频率。下面是我的命令流,希望大家都够帮我找到原因。
/PREP7
*SET,R,0.001 !radius of the circle
*SET,A,0.0025 !rectangle half length of side
*SET,B,0.0005 !piezoceramics width
*SET,L,0.015 !the stator's length
!*
ET,1,PLANE13
!*
ET,2,SOLID5
!*
!*
MPTEMP,1,0
MPDATA,EX,1,,1.10E11
MPDATA,PRXY,1,,0.37
MPTEMP,1,0
MPDATA,DENS,1,,8900
!*
!*
MPTEMP,1,0
MPDATA,DENS,2,,7600
TB,PIEZ,2 ! DEFINE PIEZO. TABLE FOR NEPEC
TBDATA,3,-6.10 ! PIEZO MATRIX CONSTANTS
TBDATA,6,-6.10
TBDATA,9,15.70
MP,PERX,2,8.7969E-9 ! PERMITTIVITY
TB,ANEL,2 ! DEFINE STRUCTURAL TABLE FOR NEPEC
TBDATA,1,12.80E10,6.8E10,6.6E10! INPUT MATRIX FOR NEPEC
TBDATA,7,12.8E10,6.6E10
TBDATA,12,11.0E10
TBDATA,16,2.1E10
TBDATA,19,2.1E10
TBDATA,21,2.1E10
!*
K,3,A,A,,
K,9,A,-A,,
CSYS,1
K,8,(R+A)/2,-45,,
K,7,R,-45,,
K,5,(R+A)/2,0,,
K,4,R,0,,
K,1,R,45,,
K,2,(R+A)/2,45,,
LSTR, 1, 2
LESIZE,1,,,1,,,,,1
LSTR, 2, 3
LESIZE,2,,,4,,,,,1
LSTR, 3, 9
LESIZE,3,,,10,,,,,1
LSTR, 9, 8
LESIZE,4,,,4,,,,,1
LSTR, 8, 7
LESIZE,5,,,1,,,,,1
LARC, 7, 1, 4
LESIZE,6,,,10,,,,,1
LARC, 8, 2, 5
LESIZE,7,,,10,,,,,1
A,1,2,8,7
ASEL,S,AREA,,1
AATT, 1, , 1, 0,
A,2,3,9,8
ASEL,S,AREA,,2
AATT, 1, , 1, 0,
ASEL,ALL
ASEL,ALL
AGEN,4,1,2, , ,90, , ,0
NUMMRG,ALL, , , ,LOW
NUMCMP,KP
NUMCMP,LINE
CSYS,0
K,15,-A-B,A,,
K,16,-A-B,-A,,
K,17,-A,-A-B,,
K,18,A,-A-B,,
LSTR, 15, 11
LESIZE,21,,,3,,,,,1
LSTR, 15, 16
LESIZE,22,,,10,,,,,1
LSTR, 16, 14
LESIZE,23,,,3,,,,,1
LSTR, 14, 17
LESIZE,24,,,3,,,,,1
LSTR, 17, 18
LESIZE,25,,,10,,,,,1
LSTR, 18, 9
LESIZE,26,,,3,,,,,1
A,15,11,14,16
ASEL,S,AREA,,9
AATT, 2, , 1, 0,
A,14,17,18,9
ASEL,S,AREA,,10
AATT, 2, , 1, 0,
ASEL,ALL
ESIZE,0,0.5,
MSHAPE,0,2D
MSHKEY,1
AMESH,ALL
CSYS,0 !ADD
TYPE, 2
EXTOPT,ESIZE,10,0,
EXTOPT,ACLEAR,0
EXTOPT,ATTR,0,0,0
MAT,1
REAL,_Z4
ESYS,0
VEXT,ALL, , ,0,0,L,,,,
FINISH
/SOL
!*
ANTYPE,2
!*
!*
!*
MODOPT,LANB,5
EQSLV,SPAR
MXPAND,5, , ,0
LUMPM,0
PSTRES,0
!*
MODOPT,LANB,5,100,100000, ,OFF,,2
/STATUS,SOLU
SOLVE
*GET,F1,MODE,1,FREQ
*GET,F2,MODE,2,FREQ
*GET,F3,MODE,3,FREQ
FINISH
!/ANG,1,-45,ZM,1
!/REPLOT
/SOLU
CSYS,0 !ADD
ANTYPE,3
NSEL,S,LOC,X,-A
NSEL,R,LOC,Y,-A,A
D,ALL,VOLT,0,
NSEL,ALL
NSEL,S,LOC,X,-A-B
D,ALL,VOLT,100,
NSEL,ALL
!NSEL,S,LOC,Y,-A
!D,ALL,VOLT,100,
!NSEL,ALL
!NSEL,S,LOC,Y,-A-B
!D,ALL,VOLT,-100,
!NSEL,ALL
HROUT,OFF
HARFRQ,F2-400,F2+400
NSUBST,10,
KBC,0
ALPHAD,0,
BETAD,0,
DMPRAT,0.002,
SOLVE
FINISH
查看了体积的属性,发现了问题,难道通过拉伸后,材料的属性并没有赋予体积,难怪没结果 问题解决了。
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