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秦時明月

新虫 (小有名气)

应助: 0 (幼儿园)
金币: 409.5
散金: 50
帖子: 138
在线: 9小时
虫号: 883923
注册: 2009-10-26
专业: 凝聚态物理

[交流] 【讨论】新做一个热电偶和+接触的小分析，有点奇怪的现象和疑问

模型描述：

线材拉拔，模具减径。采用轴对称模型。PLANE67单元。并不考虑拉拔的过程，只是考虑给线材通电的时候考虑到丝材和模具之间的接触热传导和接触电传导时丝材上面由于焦耳热的影响造成的温度分布。

问题描述：

当不考虑模具时，即只建立丝材模型并通电时，感觉节点温度分布云图还是比较合理的（如附件1图所示）。

但是当同时建立丝材和模具模型并考虑接触热导和接触电导时，感觉电流密度矢量分布（如附件2图所示）、焦耳热生产率云图（如附件3图所示）以及温度梯度分布（如附件4图所示）都可能是合理的，但是节点温度分布云图就和想象的相差甚远了——竟然是在整个丝材上的温度分布！！

这个考虑到丝材直径小的地方有更多的焦耳热生成，则该部分的温度会比较高才对啊！

下面贴上对应于GUI操作时系统直接生成的命令流文件，由于我的对命令不熟悉，不会修改简化，因此看起来可能有点费劲，见谅了！！

期望朋友们指教！好让我早点知道问题之所在，谢谢！！

/BATCH
/COM,ANSYS RELEASE 10.0 UP20050718    14:15:05 03/13/2010
/input,menust,tmp,'',,,,,,,,,,,,,,,,1
/GRA,POWER
/GST,ON
/PLO,INFO,3
/GRO,CURL,ON
/CPLANE,1
/REPLOT,RESIZE
WPSTYLE,,,,,,,,0
/REPLOT,RESIZE
/COM,ANSYS RELEASE 10.0 UP20050718    14:05:12 03/13/2010
/input,menust,tmp,'',,,,,,,,,,,,,,,,1
/GRA,POWER
/GST,ON
/PLO,INFO,3
/GRO,CURL,ON
/CPLANE,1
/REPLOT,RESIZE
WPSTYLE,,,,,,,,0
/COM,ANSYS RELEASE 10.0 UP20050718    12:32:51 03/13/2010
/input,menust,tmp,'',,,,,,,,,,,,,,,,1
/GRA,POWER
/GST,ON
/PLO,INFO,3
/GRO,CURL,ON
/CPLANE,1
/REPLOT,RESIZE
WPSTYLE,,,,,,,,0
/REPLOT,RESIZE
/FILNAME,xinde,1
/BATCH
/COM,ANSYS RELEASE 10.0 UP20050718    14:15:14 03/13/2010
/COM,ANSYS RELEASE 10.0 UP20050718    14:05:17 03/13/2010
/COM,ANSYS RELEASE 10.0 UP20050718    12:33:09 03/13/2010
/TITLE,xinde
/PREP7
!*
ET,1,PLANE67
!*
KEYOPT,1,3,1
KEYOPT,1,4,0
!*
MPTEMP
MPTEMP,    1, 0.0000000E+00,
MPDATA,DENS,    1, 1, 0.8900000E+04,
MPTEMP
MPTEMP,    1, 0.0000000E+00,
MPDATA,KXX ,    1, 1, 0.6700000E+02,
MPTEMP
MPTEMP,    1, 0.0000000E+00,
MPDATA,RSVX,    1, 1, 0.1800000E-07,
MPTEMP
MPTEMP,    1, 0.0000000E+00,
MPDATA,C ,    1, 1, 0.8000000E+03,
!*
*CSET,1,2,    1,2,
MPCOPY, ,1,2
TBCOPY,ALL,1,2
!*
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDE,C,1
MPDATA,C,1,,377
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDE,KXX,1
MPDATA,KXX,1,,106
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDE,C,1
MPDATA,C,1,,418
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDE,KXX,1
MPDATA,KXX,1,,407
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDE,C,2
MPDATA,C,2,,460
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDE,KXX,2
MPDATA,KXX,2,,16
!*
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDE,RSVX,2
MPDATA,RSVX,2,,1.8E-006
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDE,DENS,2
MPDATA,DENS,2,,7850
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDE,RSVX,1
MPDATA,RSVX,1,,1.8E-008
K, ,0,0,,
K, ,0.001,0,,
K, ,0.0011,0.0005,,
K, ,0.0011,0.004,,
K, ,0,0.004,,
K, ,0,0.0005,,
K, ,0.001,0,,
K, ,0.0011,0.0005,,
K, ,0.0025,0.0005,,
K, ,0.0025,0,,
SAVE
FINISH
! /EXIT,NOSAV
/COM,ANSYS RELEASE 10.0 UP20050718    12:39:37 03/13/2010
/input,menust,tmp,'',,,,,,,,,,,,,,,,1
/GRA,POWER
/GST,ON
/PLO,INFO,3
/GRO,CURL,ON
/CPLANE,1
/REPLOT,RESIZE
WPSTYLE,,,,,,,,0
/REPLOT,RESIZE
RESUME
/COM,ANSYS RELEASE 10.0 UP20050718    14:15:17 03/13/2010
/COM,ANSYS RELEASE 10.0 UP20050718    14:05:19 03/13/2010
/COM,ANSYS RELEASE 10.0 UP20050718    12:39:42 03/13/2010
/REPLOT,RESIZE
/PREP7
FLST,2,4,3
FITEM,2,1
FITEM,2,6
FITEM,2,3
FITEM,2,2
A,P51X
FLST,2,4,3
FITEM,2,6
FITEM,2,5
FITEM,2,4
FITEM,2,3
A,P51X
FLST,2,4,3
FITEM,2,8
FITEM,2,7
FITEM,2,10
FITEM,2,9
A,P51X
FLST,5,2,5,ORDE,2
FITEM,5,1
FITEM,5,-2
CM,_Y,AREA
ASEL, , , ,P51X
CM,_Y1,AREA
CMSEL,S,_Y
!*
CMSEL,S,_Y1
AATT,    1, , 1,    0,
CMSEL,S,_Y
CMDELE,_Y
CMDELE,_Y1
!*
CM,_Y,AREA
ASEL, , , ,    3
CM,_Y1,AREA
CMSEL,S,_Y
!*
CMSEL,S,_Y1
AATT,    2, , 1,    0,
CMSEL,S,_Y
CMDELE,_Y
CMDELE,_Y1
!*
ASEL,S,MAT,,1
ALLSEL,BELOW,AREA
LPLOT
FLST,5,2,4,ORDE,2
FITEM,5,1
FITEM,5,3
CM,_Y,LINE
LSEL, , , ,P51X
CM,_Y1,LINE
CMSEL,,_Y
!*
LESIZE,_Y1, , ,10, , , , ,1
!*
FLST,5,3,4,ORDE,3
FITEM,5,2
FITEM,5,4
FITEM,5,6
CM,_Y,LINE
LSEL, , , ,P51X
CM,_Y1,LINE
CMSEL,,_Y
!*
LESIZE,_Y1, , ,20, , , , ,1
!*
FLST,5,2,4,ORDE,2
FITEM,5,5
FITEM,5,7
CM,_Y,LINE
LSEL, , , ,P51X
CM,_Y1,LINE
CMSEL,,_Y
!*
LESIZE,_Y1, , ,70, , , , ,1
!*
ASEL,S,MAT,,2
ALLSEL,BELOW,AREA
LPLOT
FLST,5,2,4,ORDE,2
FITEM,5,8
FITEM,5,10
CM,_Y,LINE
LSEL, , , ,P51X
CM,_Y1,LINE
CMSEL,,_Y
!*
LESIZE,_Y1, , ,10, , , , ,1
!*
FLST,5,2,4,ORDE,2
FITEM,5,9
FITEM,5,11
CM,_Y,LINE
LSEL, , , ,P51X
CM,_Y1,LINE
CMSEL,,_Y
!*
LESIZE,_Y1, , ,30, , , , ,1
!*
ALLSEL,ALL
/REPLOT
FLST,5,3,5,ORDE,2
FITEM,5,1
FITEM,5,-3
CM,_Y,AREA
ASEL, , , ,P51X
CM,_Y1,AREA
CHKMSH,'AREA'
CMSEL,S,_Y
!*
MSHKEY,1
AMESH,_Y1
MSHKEY,0
!*
CMDELE,_Y
CMDELE,_Y1
CMDELE,_Y2
!*
!*
!*
/COM, CONTACT PAIR CREATION - START
CM,_NODECM,NODE
CM,_ELEMCM,ELEM
CM,_KPCM,KP
CM,_LINECM,LINE
CM,_AREACM,AREA
CM,_VOLUCM,VOLU
/GSAV,cwz,gsav,,temp
MP,MU,1,
MAT,1
MP,EMIS,1,
R,3
REAL,3
ET,2,169
ET,3,172
R,3,,,1.0,0.1,0,
RMORE,,,1.0E20,0.0,1.0,
RMORE,0.0,100,1.0,5.67E-08,1.0,0.5
RMORE,1.5e-7,1.0,1.0,0.0,,1.0
KEYOPT,3,3,0
KEYOPT,3,4,0
KEYOPT,3,5,0
KEYOPT,3,7,0
KEYOPT,3,8,0
KEYOPT,3,9,0
KEYOPT,3,10,2
KEYOPT,3,11,0
KEYOPT,3,12,0
KEYOPT,3,2,0
KEYOPT,3,1,4
! Generate the target surface
LSEL,S,,,8
CM,_TARGET,LINE
TYPE,2
NSLL,S,1
ESLN,S,0
ESURF
CMSEL,S,_ELEMCM
! Generate the contact surface
LSEL,S,,,3
LSEL,A,,,7
CM,_CONTACT,LINE
TYPE,3
NSLL,S,1
ESLN,S,0
ESURF
ALLSEL
ESEL,ALL
ESEL,S,TYPE,,2
ESEL,A,TYPE,,3
ESEL,R,REAL,,3
/PSYMB,ESYS,1
/PNUM,TYPE,1
/NUM,1
EPLOT
ESEL,ALL
ESEL,S,TYPE,,2
ESEL,A,TYPE,,3
ESEL,R,REAL,,3
CMSEL,A,_NODECM
CMDEL,_NODECM
CMSEL,A,_ELEMCM
CMDEL,_ELEMCM
CMSEL,S,_KPCM
CMDEL,_KPCM
CMSEL,S,_LINECM
CMDEL,_LINECM
CMSEL,S,_AREACM
CMDEL,_AREACM
CMSEL,S,_VOLUCM
CMDEL,_VOLUCM
/GRES,cwz,gsav
CMDEL,_TARGET
CMDEL,_CONTACT
/COM, CONTACT PAIR CREATION - END
/MREP,EPLOT
!*
KEYOPT,3,1,4
KEYOPT,3,2,0
KEYOPT,3,3,0
KEYOPT,3,4,0
KEYOPT,3,5,3
KEYOPT,3,6,0
KEYOPT,3,7,0
KEYOPT,3,8,0
KEYOPT,3,9,0
KEYOPT,3,10,2
KEYOPT,3,11,0
KEYOPT,3,12,0
!*
R,3,0,0,1, 0.1,0,0
RMORE,0,0,1e+020, 0,1,0
RMORE,0,100,, 5.67e-008,1,0.5
RMORE,1.5e-007,1,1, 0,,
ALLSEL,ALL
/REPLOT
FINISH
/SOL
!*
ANTYPE,4
!*
TRNOPT,FULL
LUMPM,0
!*
!*
NLGEOM,0
SSTIF,0
NROPT,FULL, ,
EQSLV, , ,0,
PRECISION,0
MSAVE,0
TOFFST,273,
!*
TUNIF,30,
SAVE
SAVE
SAVE
FINISH
! /EXIT,NOSAV
/COM,ANSYS RELEASE 10.0 UP20050718    12:45:08 03/13/2010
/input,menust,tmp,'',,,,,,,,,,,,,,,,1
/GRA,POWER
/GST,ON
/PLO,INFO,3
/GRO,CURL,ON
/CPLANE,1
/REPLOT,RESIZE
WPSTYLE,,,,,,,,0
RESUME
/COM,ANSYS RELEASE 10.0 UP20050718    14:15:27 03/13/2010
/COM,ANSYS RELEASE 10.0 UP20050718    14:05:27 03/13/2010
/COM,ANSYS RELEASE 10.0 UP20050718    12:45:11 03/13/2010
/SOLU
FLST,2,4,4,ORDE,3
FITEM,2,7
FITEM,2,9
FITEM,2,-11
/GO
!*
SFL,P51X,CONV,10, ,30,
ALLSEL,ALL
NSEL,S,LOC,Y,0.004
FLST,2,21,1,ORDE,3
FITEM,2,232
FITEM,2,302
FITEM,2,-321
/GO
!*
D,P51X,VOLT,0
ALLSEL,ALL
LSEL,S, , ,    4
NSLL,S,1
FINISH
/PREP7
FLST,4,21,1,ORDE,4
FITEM,4,1
FITEM,4,32
FITEM,4,42
FITEM,4,-60
CP,1,VOLT,P51X
*get,nc,node,,num,max
f,nc,amps,3000
!*
KEYOPT,1,3,1
KEYOPT,1,4,0
!*
FINISH
/SOL
!*
OUTPR,ALL,ALL,
!*
OUTRES,ALL,ALL,
!*
TIME,0.1
AUTOTS,1
DELTIM,0.01, , ,1
KBC,1
!*
TSRES,ERASE
!*
TIME,0.1
AUTOTS,1
NSUBST,50,10000,100,1
KBC,1
!*
TSRES,ERASE
!*
TIME,0.1
AUTOTS,1
NSUBST,50,10000,50,1
KBC,1
ALLSEL,ALL
/STATUS,SOLU
SOLVE
FINISH

[ Last edited by 秦時明月 on 2010-3-13 at 16:28 ]

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