wuyp802 发表于 2009-7-3 16:40:42

对流和生热率同时加，生热率加不上

我做的是平板对接激光焊温度场模拟。加载过程中，先在长方体的五个面（SURF152表面效应单元）上加了对流，又在体（SOLID70单元）上加了生热率。但是结果只有一个未加对流载荷的面上加上了生热率，其余五个面温度是室温。百思不得其解，请高手指教。以下是我加的对流和生热率
ET,3,SURF152
KEYOPT,3,4,1
KEYOPT,3,5,1
KEYOPT,3,6,0
KEYOPT,3,8,1
KEYOPT,3,9,1
R,3,1,5.67E-14
TYPE,3
REAL,3
MAT,3
MPTEMP,,,,,,,,
MPTEMP,1,20,300,600,750,900,1200
MPTEMP,7,1500,1800,2000
MP,HF,MAT,1,6,50,120,180,200,250
MP,HF,MAT,7,378,700,850

ALLSEL
ASEL,S,LOC,X,0,0
ASEL,R,LOC,Z,0,PLATE_HEI
ASEL,R,LOC,Y,0,PLATE_WID
CM,AREA1,AREA
SFA,AREA1,,CONV,-3,20
ALLSEL
ASEL,S,LOC,X,PLATE_LEN,PLATE_LEN
ASEL,R,LOC,Z,0,PLATE_HEI
ASEL,R,LOC,Y,0,PLATE_WID
CM,AREA2,AREA
SFA,AREA2,,CONV,-3,20
ALLSEL
ASEL,S,LOC,Y,PLATE_WID,PLATE_WID
ASEL,R,LOC,Z,0,PLATE_HEI
ASEL,R,LOC,X,0,PLATE_LEN
CM,AREA3,AREA
SFA,AREA2,,CONV,-3,20
ALLSEL
ASEL,S,LOC,Z,0,0
ASEL,R,LOC,X,0,PLATE_LEN
ASEL,R,LOC,Y,0,PLATE_WID
CM,AREA4,AREA
SFA,AREA4,,CONV,-3,20
ALLSEL
ASEL,S,LOC,Z,PLATE_HEI,PLATE_HEI
ASEL,R,LOC,X,0,PLATE_LEN
ASEL,R,LOC,Y,0,PLATE_WID
CM,AREA5,AREA
SFA,AREA5,,CONV,-3,20
ALLSEL
SAVE
LO_COORD=0
RECY_NODE=1
LOAD_STEP=PLATE_LEN/WELD_GRID
*DO,CALCURECY,1,LOAD_STEP,1
LO_COORD=CALCURECY*WELD_GRID
LOCAL,20,1,LO_COORD,0,0,,,,1,1
ALLSEL,ALL
NSEL,ALL
NROTAT,ALL
ALLSEL,ALL
NSEL,S,LOC,Z,0,0
NSEL,R,LOC,X,0,1
ESLN,S
ESEL,R,TYPE,,2
CM,N01,ELEM
SAVE
ALLSEL,ALL
NSEL,S,LOC,Z,0.5,0.5
NSEL,R,LOC,X,0,0.7
ESLN,S
ESEL,R,TYPE,,2
CM,N02,ELEM
SAVE
ALLSEL,ALL
NSEL,S,LOC,Z,1,1
NSEL,R,LOC,X,0,0.4
ESLN,S
ESEL,R,TYPE,,2
CM,N03,ELEM
SAVE
ALLSEL,ALL
CMSEL,S,N01,ELEM
CMSEL,A,N02,ELEM
CMSEL,A,N03,ELEM
CM,N_%RECY_NODE%,ELEM
SAVE
CSDELE,20,,,
SAVE
CSYS,0
ALLSEL,ALL
NSEL,ALL
NROTAT,ALL
ALLSEL,ALL
RECY_NODE=RECY_NODE+1
*ENDDO
/SOLU
ANTYPE,TRANS,NEW
TRNOPT,FULL
TIMINT,ON
TINTP,,,,1
LUMPM,0
LNSRCH,1
NROPT,FULL,,
EQSLV,ICCG,1.0E-5
NEQIT,50
AUTOTS,1
KBC,1
OUTRES,BASIC,LAST
NSUBST,5,10,1
TUNIF,25
SAVE
ALLSEL
RECY_NODE=1
*DO,CALCURECY,1,LOAD_STEP,1
CSYS,0
ALLSEL,ALL
CMSEL,S,N_%RECY_NODE%,ELEM
BFE,ALL,HGEN,,QVOLUME
TIME,CALCURECY*WELDGDTM
ALLSEL,ALL
SOLVE
SAVE
ALLSEL,ALL
CMSEL,S,N_%RECY_NODE%,ELEM
BFEDELE,ALL,HGEN
ALLSEL
SAVE
RECY_NODE=RECY_NODE+1
*ENDDO

wuyp802 发表于 2009-7-3 17:43:02

自己顶一下。有人遇到类似问题吗？如果已经解决了麻烦给小女子指正一下。不胜感激

deng2308 发表于 2009-7-4 13:05:15

看命令流好吃力

wuyp802 发表于 2009-7-4 18:41:00

加的是移动热源，先设定的局部坐标，再通过do循环加载体生热率。错误日志显示：Both solid model and finite element model boundary conditions have beenapplied to this model.As solid loads are transferred to the nodes or   elements, they can overwrite directly applied loads.

wuyp802 发表于 2009-7-4 19:22:30

我是同时施加的对流换热和体生热率，体生热率却加不上。但是同时施加热辐射和体生热率就没问题。前者的在错误日志中就多出了这样一条警告：Both solid model and finite element model boundary conditions have been applied to this model.As solid loads are transferred to the nodes orelements, they can overwrite directly applied loads.

wy28163824 发表于 2009-7-16 21:54:16

通过表面效应单元可以~

200802172 发表于 2010-3-26 09:51:08

kan bu dong a

boya220 发表于 2010-7-2 08:24:31

我想问一下你那个问题解决了吗，如果解决了是用什么方法解决的啊，谢谢

ansys平安 发表于 2010-7-2 09:42:03

呵呵 你的命令太长了 建议你用标准的apdl 然后在命令后面用中文注释一下 这样也好让大家帮你看的 你的问题好像不是大问题 还有就是你在5楼的错误不是错误
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