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15527218310

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[求助] ANSYS做焊接模拟的时候，为什么单元尺寸对计算结果那么大已有2人参与

ANSYS做焊接模拟的时候，为什么单元尺寸对计算结果那么大？我把单元尺寸划为2mm的时候，计算的温度是2000多，但是把尺寸划为1mm的时候，计算出来的结果有几万度？我加载的是体生热热源……

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1楼2017-07-02 19:37:56

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引用回帖:

5楼: Originally posted by shgao20 at 2017-07-04 08:16:24
请把有问题的模型发上来，帮你看看。

FINISH
/CLEAR
/PREP7
/UNITS,SI

ET,1,SOLID70
PI=3.1415
LENGTH=0.07
I=190
U=28
V=0.007
Q=0.70*I*U

TIME_FREQUENCY=0.5
L_NUMBER=LENGTH/V/TIME_FREQUENCY

MPTEMP,1,25,100,200,300,400,500
MPTEMP,,700,800,900,1000,1100,1200
MPTEMP,,1300,1400,1500,1600
MPDATA,DENS,1,1,7830,7810,7780,7740,7710,7670
MPDATA,DENS,1,,7600,7620,7570,7520,7460,7410
MPDATA,DENS,1,,7360,7310,7100,6920

MPDATA,KXX,1,1,70.92,62.67,51.13,45.94,40.3,35.07
MPDATA,KXX,1,,29.09,25.77,26.81,28.04,29.08,30.51
MPDATA,KXX,1,,31.74,32.97,33.84,34.74

MPDATA,C,1,1,460,490,530,590,680,720
MPDATA,C,1,,1100,830,610,620,640,660
MPDATA,C,1,,670,690,700,820

MPDATA,ENTH,1,1,0,1.3E3,5.43E4,1.09E5,1.73E5,2.47E5
MPDATA,ENTH,1,,4.28E5,5.35E5,5.97E5,6.58E5,7.21E5,7.86E5
MPDATA,ENTH,1,,8.52E5,9.21E5,1.25E6,1.32E6

MPDATA,HF,1,1,1.67,6.68,13.36,20.04,26.72,33.4
MPDATA,HF,1,,114.6,142.7,170.9,198.9,227,255.1
MPDATA,HF,1,,283.2,311.3,339.4,367.5

BLOCK,0,0.06,0,LENGTH,0,0.015
BLOCK,0.06,0.08,0,LENGTH,0,0.015
BLOCK,0.08,0.14,0,LENGTH,0,0.015

WPOFFS,0.07,0,0.015

K,100,-0.0044,0,0
K,101,-0.0033,0,0.001
K,102,-0.0022,0,0.00177
K,103,-0.0011,0,0.0022
K,104,0,0,0.00236
K,105,0.0011,0,0.0022
K,106,0.0022,0,0.00177
K,107,0.0033,0,0.001
K,108,0.0044,0,0

KSEL,S,,,100,108
SPLINE,ALL
L,100,108

LSEL,S,,,37,44
LCOMB,ALL

ALLSEL
AL,37,45

AGEN,,19,,,0.07,0,0.015,,,1
VDRAG,19,,,,,,8
VGLUE,ALL
NUMCMP,ALL

WPOFFS,-0.07,0,-0.015

VSEL,S,,,2
VPLOT
ESIZE,0.002
TYPE,1
VSWEEP,ALL

VSEL,S,,,4,
VPLOT
ESIZE,0.002
TYPE,1
VSWEEP,ALL

VSEL,S,,,1,3,2
VPLOT
ESIZE,0.004
TYPE,1
VMESH,ALL

FINISH

/SOLU
ANTYPE,4
NROPT.FULL
NLGEOM,ON
OUTPR,ALL,ALL
OUTRES,ALL,ALL
TIMINT,OFF
KBC,1
AUTOTS,ON
NSUBST,4
TIME,0.01
ALLSEL
NSLV
D,ALL,TEMP,25
ALLSEL
SOLVE

DDELE,ALL,ALL
VSEL,S,,,2
ESLV
EKILL,ALL
TIME,0.02
ALLSEL
SOLVE

XC=0.070
ZC=0.015

TIME=0.02

*DO,I,1,L_NUMBER,1
BFDELE,ALL,ALL
SFADELE,ALL,ALL
VSEL,S,,,2
NSLV
NSEL,R,LOC,Y,(I-1)*LENGTH/L_NUMBER,I*LENGTH/L_NUMBER
ESLN
EALIVE,ALL
NSEL,R,LOC,Y,(I-1)*LENGTH/L_NUMBER,I*LENGTH/L_NUMBER
BF,ALL,HGEN,Q/V/1.37e-5/TIME_FREQUENCY
ALLSEL
ASEL,ALL
SFA,ALL,,CONV,-1,25
TIME=TIME+TIME_FREQUENCY
TIMINT,ON
TIME,TIME
LNSRCH,ON
NSUBST,10
ALLSEL
SOLVE
*ENDDO

*DO,M,1,50,1
TIME=TIME+3
TIME,TIME
BFDELE,ALL,ALL
SFADELE,ALL,ALL
ALLSEL
ASEL,ALL
SFA,ALL,,CONV,80,25
NSUBST,10
ALLSEL
SOLVE
*ENDDO

TIME,TIME+300
BFDELE,ALL,ALL
SFADELE,ALL,ALL
ALLSEL
ASEL,ALL
SFA,ALL,,CONV,-1,25
NSUBST,100
ALLSEL
SOLVE