本帖最后由 cannavaro 于 2014-2-12 18:13 编辑
大家好,想请教一个问题,我这个是用ansys的函数加载功能加载体热源,但是在求解时就会报错:
*** ERROR *** The L-2 norm of the residual force overflowed. This may be caused by PRED,ON or birth/dead elements. Please use PRED,OFF and try again.不知道什么原因,希望大家给我宝贵的意见,谢谢啦!具体的命令流如下:
Finish
/Filname,experiment3
/Title,NO.3
/Units,SI
/Prep7
ET,1,SOLID70
KEYOPT,1,2,1
ET,2,SOLID90
KEYOPT,2,1,1
ET,3,SOLID87
*SET,x0,0.005
*SET,z0,0
*SET,PI,3.1415926
*SET,rb,0.00008
*SET,A,0.25
*SET,P,3000
*SET,x_center,x0
*SET,z_center,z0-rb
*SET,tim,0.0005
*SET,k,0.5
*SET,QC1,3*A*k*P/(PI*rb*rb)
*SET,QC2,9*A*(1-k)*P/(PI*rb*rb)
*SET,H,0.00045
*SET,e,2.71828
K,1,0,0,-0.00008
K,2,0,-0.001,-0.00008
K,3,0,-0.001,0.00008
K,4,0,0,0.00008
K,5,0,0,0.00024
K,6,0,-0.002,0.00024
K,7,0,-0.002,-0.00008
K,8,0,-0.005,-0.00008
K,9,0,-0.005,0.00492
K,10,0,0,0.00492
K,11,0,-0.002,0.00008
K,12,0,-0.005,0.00024
K,13,0,-0.001,0.00024
K,14,0,-0.002,0.00492
K,15,0,-0.001,0.00492
K,16,0,-0.005,0.00008
CSYS,0
A,1,2,3,4
A,2,7,11,3
A,4,3,13,5
A,3,11,6,13
A,7,8,16,11
A,11,16,12,6
A,5,13,15,10
A,13,6,14,15
A,6,12,9,14
/PNUM,AREA,1
APLOT
VOFFST,1,-0.01
VOFFST,2,-0.01
VOFFST,3,-0.01
VOFFST,4,-0.01
VOFFST,5,-0.01
VOFFST,6,-0.01
VOFFST,7,-0.01
VOFFST,8,-0.01
VOFFST,9,-0.01
ALLSEL,ALL
VGLUE,ALL
MPTEMP,1,25,100,400,500,700,727
MPTEMP,7,740,800,1000,1200,1300,1400
MPDATA,KXX,1,,63.52,56.96,48.12,40.23,33.90,28.33
MPDATA,KXX,1,,25.49,26.55,27.93,29.88,32.77,34.58
MPDATA,C,1,,456,499,596,698,901,8398
MPDATA,C,1,,600,610,618,649,689.6,1943.8
MPDATA,DENS,1,,7897,7736,7730,7667,7598,7599
MPDATA,DENS,1,,7628,7593,7530,7432,7332,7232
ALLSEL,ALL
VSEL,s,VOLU,,1
MAT,1
TYPE,1
ESIZE,0.00002
MSHKEY,1
MSHAPE,0,3D
VMESH,ALL
ALLSEL,ALL
VSEL,s,VOLU,,13,17
MAT,1
TYPE,1
ESIZE,0.0002
MSHKEY,1
MSHAPE,0,3D
VMESH,ALL
ALLSEL,ALL
VSEL,s,VOLU,,10,12
MAT,1
TYPE,2
MSHKEY,0
MSHAPE,1,3D
SMRTSIZE,OFF
DESIZE,,,,,,0.00002,0.0002
MOPT,PYRA,1
VMESH,ALL
TCHG,solid90,solid87,0
*DEL,_FNCNAME
*DEL,_FNCMTID
*DEL,_FNC_C1
*DEL,_FNC_C2
*DEL,_FNC_C3
*DEL,_FNC_C4
*DEL,_FNC_C5
*DEL,_FNC_C6
*DEL,_FNCCSYS
*SET,_FNCNAME,'heat_source1'
*DIM,_FNC_C1,,1
*DIM,_FNC_C2,,1
*DIM,_FNC_C3,,1
*DIM,_FNC_C4,,1
*DIM,_FNC_C5,,1
*DIM,_FNC_C6,,1
*SET,_FNC_C1(1),QC2
*SET,_FNC_C2(1),H
*SET,_FNC_C3(1),e
*SET,_FNC_C4(1),z_center
*SET,_FNC_C5(1),x_center
*SET,_FNC_C6(1),rb
*SET,_FNCCSYS,0
*DIM,%_FNCNAME%,TABLE,8,32,1,,,,%_FNCCSYS%
!
*SET,%_FNCNAME%(0,0,1), 0.0, -999
*SET,%_FNCNAME%(2,0,1), 0.0
*SET,%_FNCNAME%(3,0,1), %_FNC_C1(1)%
*SET,%_FNCNAME%(4,0,1), %_FNC_C2(1)%
*SET,%_FNCNAME%(5,0,1), %_FNC_C3(1)%
*SET,%_FNCNAME%(6,0,1), %_FNC_C4(1)%
*SET,%_FNCNAME%(7,0,1), %_FNC_C5(1)%
*SET,%_FNCNAME%(8,0,1), %_FNC_C6(1)%
*SET,%_FNCNAME%(0,1,1), 1.0, -1, 0, 0, 0, 0, 0
*SET,%_FNCNAME%(0,2,1), 0.0, -2, 0, 1, 0, 0, -1
*SET,%_FNCNAME%(0,3,1), 0, -3, 0, 1, -1, 2, -2
*SET,%_FNCNAME%(0,4,1), 0.0, -1, 0, 3, 0, 0, -3
*SET,%_FNCNAME%(0,5,1), 0.0, -2, 0, 1, -3, 3, -1
*SET,%_FNCNAME%(0,6,1), 0.0, -1, 0, 1, 19, 17, -2
*SET,%_FNCNAME%(0,7,1), 0.0, -2, 0, 1, 0, 0, -1
*SET,%_FNCNAME%(0,8,1), 0.0, -3, 0, 1, -2, 2, -1
*SET,%_FNCNAME%(0,9,1), 0.0, -1, 0, 1, 18, 3, -3
*SET,%_FNCNAME%(0,10,1), 0.0, -2, 0, 1, 17, 4, -1
*SET,%_FNCNAME%(0,11,1), 0.0, -1, 0, 0, 0, 0, 0
*SET,%_FNCNAME%(0,12,1), 0.0, -3, 0, 1, 0, 0, -1
*SET,%_FNCNAME%(0,13,1), 0.0, -4, 0, 1, -1, 2, -3
*SET,%_FNCNAME%(0,14,1), 0.0, -1, 0, 1, 4, 2, 20
*SET,%_FNCNAME%(0,15,1), 0.0, -3, 0, 2, 0, 0, -1
*SET,%_FNCNAME%(0,16,1), 0.0, -5, 0, 1, -1, 17, -3
*SET,%_FNCNAME%(0,17,1), 0.0, -1, 0, 1, 2, 2, 21
*SET,%_FNCNAME%(0,18,1), 0.0, -3, 0, 2, 0, 0, -1
*SET,%_FNCNAME%(0,19,1), 0.0, -6, 0, 1, -1, 17, -3
*SET,%_FNCNAME%(0,20,1), 0.0, -1, 0, 1, -5, 1, -6
*SET,%_FNCNAME%(0,21,1), 0.0, -3, 0, 9, 0, 0, -1
*SET,%_FNCNAME%(0,22,1), 0.0, -5, 0, 1, -3, 3, -1
*SET,%_FNCNAME%(0,23,1), 0.0, -1, 0, 1, -4, 3, -5
*SET,%_FNCNAME%(0,24,1), 0.0, -3, 0, 1, 18, 4, 3
*SET,%_FNCNAME%(0,25,1), 0.0, -3, 5, 1, -3, 0, 0
*SET,%_FNCNAME%(0,26,1), 0.0, -4, 0, 2, 0, 0, 22
*SET,%_FNCNAME%(0,27,1), 0.0, -5, 0, 1, 22, 17, -4
*SET,%_FNCNAME%(0,28,1), 0.0, -4, 0, 1, -3, 3, -5
*SET,%_FNCNAME%(0,29,1), 0.0, -3, 0, 1, -1, 4, -4
*SET,%_FNCNAME%(0,30,1), 0.0, -1, 7, 1, -3, 0, 0
*SET,%_FNCNAME%(0,31,1), 0.0, -3, 0, 1, -2, 3, -1
*SET,%_FNCNAME%(0,32,1), 0.0, 99, 0, 1, -3, 0, 0
!-->
Finish
/SOLU
/UNIT,SI
TOFFST,273
TUNIF,25
ANTYPE,TRANS
TRNOPT,FULL
LNSRCH,ON
TIMINT,ON,ALL
TINTP,,,,1
NROPT,FULL,,ON
OUTRES,ALL,ALL
TIME,tim
NSUBST,10,10,10
NEQIT,50
AUTOTS,-1
KBC,1
ALLSEL,ALL
ESEL,r,TYPE,,1
NSLE,s
NSEL,r,loc,x,0.00492,0.00508
NSEL,r,loc,z,-0.00008,0
NSEL,r,loc,y,-0.0005,0
BF,ALL,hgen,%heat_source1%
ALLSEL,ALL
SOLVE
SAVE
Finish
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