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zhuguli92

木虫 (正式写手)

应助: 0 (幼儿园)
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帖子: 669
在线: 111小时
虫号: 3367421
注册: 2014-08-15
专业: 外国语言

[求助] 回转体零件瞬态加热分析,求助！已有1人参与

本人ansys新手，最近在做一个零件的热处理加热模拟。将一个回转体零件，初始温度为20℃，放入温度为500℃的加热炉中加热（零件材料的热性能在命令流中给出）。我取零件的1/4来进行分析。我模仿一个类似的实例编写了我的命令流，可是计算结果很奇怪，温度分布的三维云图显示，零件的温度似乎温差很小很小，我觉得这样绝对不可能啊。这个问题困扰我很久了，各位朋友有没有遇到过这个问题，请不吝赐教= =！
下面是我的命令流：
FINISH
/clear
/filname,GDDtemp,1
/prep7
/title,GDDtemp
/UNITS,SI
et,1,solid70
MPTEMP,,,,,,,,
MPTEMP,1,293
MPTEMP,2,373
MPTEMP,3,473
MPTEMP,4,573
MPTEMP,5,673
MPTEMP,6,773
MPTEMP,7,873
MPTEMP,8,973

MPDATA,C,1,,472
MPDATA,C,1,,480
MPDATA,C,1,,498
MPDATA,C,1,,524
MPDATA,C,1,,560
MPDATA,C,1,,615
MPDATA,C,1,,700

MPTEMP,,,,,,,,
MPTEMP,1,293
MPTEMP,2,373
MPTEMP,3,473
MPTEMP,4,573
MPTEMP,5,673
MPTEMP,6,773
MPTEMP,7,873
MPTEMP,8,973

MPDATA,KXX,1,,47.7
MPDATA,KXX,1,,43.5
MPDATA,KXX,1,,40.4
MPDATA,KXX,1,,38.1
MPDATA,KXX,1,,36.0
MPDATA,KXX,1,,34.16
MPDATA,KXX,1,,31.98

mp,DENS,1,7850

/prep7
csys,0
cylind,0.008,0.014,0,0.004,0,90
cylind,0.008,0.012,0.004,0.01,0,90
cylind,0.008,0.016,0.01,0.012,0,90
cylind,0.008,0.014,0.012,0.014,0,90
cylind,0.004,0.014,0.014,0.018,0,90
cylind,0.004,0.010,0.018,0.02,0,90  !建立三维分析模型
VGLUE,all

lsel,s,length,,4e-3
lesize,all,,,8
lsel,s,length,,6e-3
lesize,all,,,12
lsel,s,radius,,8e-3
lsel,a,radius,,14e-3
lesize,all,,,20
vsel,s,loc,z,0,4e-3
vatt,1,,1
mshape,0,3d
mshkey,1
vsweep,all
allsel

lsel,s,length,,6e-3
lesize,all,,,12
lsel,s,length,,4e-3
lesize,all,,,8
vsel,s,loc,z,4e-3,1e-2
vatt,1,,1
mshape,0,3d    !六面体网格
mshkey,1    !映射网格划分
vsweep,all
allsel

lsel,s,length,,2e-3
lesize,all,,,4
lsel,s,length,,8e-3
lesize,all,,,16
vsel,s,loc,z,1e-2,12e-3
vatt,1,,1
mshape,0,3d    !六面体网格
mshkey,1    !映射网格划分
vsweep,all
allsel

lsel,s,length,,2e-3
lesize,all,,,4
lsel,s,length,,6e-3
lesize,all,,,12
vsel,s,loc,z,12e-3,14e-3
vatt,1,,1
mshape,0,3d    !六面体网格
mshkey,1    !映射网格划分
vsweep,all
allsel

lsel,s,length,,4e-3
lesize,all,,,8
lsel,s,length,,1e-2
lesize,all,,,20
vsel,s,loc,z,14e-3,18e-3
vatt,1,,1
mshape,0,3d    !六面体网格
mshkey,1    !映射网格划分
vsweep,all
allsel

lsel,s,length,,2e-3
lesize,all,,,4
lsel,s,length,,6e-3
lesize,all,,,12
vsel,s,loc,z,18e-3,2e-2
vatt,1,,1
mshape,0,3d    !六面体网格
mshkey,1    !映射网格划分
vsweep,all
allsel
eplot

/solu
ANTYPE,TRANS    !分析类型为瞬态分析
outres,all,all !定义结果输出
timint,on       !开启积分效应
DELTIM,25,10,30    !定义时间步长
autots,on

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!加热
time,3600       !定义计算结束的时间
KBC,0                !渐变选项
allsel,all
TUNIF,293    !设定初始温度均匀20℃

allsel,all
NSEL,all    !选取所有节点
  NSEL,r,EXT       !选择外部所有节点
nsel,u,loc,y,0    !不选择y=0的面上的节点
nsel,u,loc,x,0    !不选择x=0的面上的节点
  !以上设置绝热边界
sf,all,conv,13.9,773  !施加对流换热载荷
allsel,all          !选择所有节点
solve

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