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yongdong2001

铁虫 (初入文坛)

[求助] ansys加载问题求帮助 已有2人参与

初学ansys,请教一下,如果我想在构件上加载240kPa到840kPa的荷载,按120kPa等比例加载,怎么完成?
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yongdong2001

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引用回帖:
7楼: Originally posted by shgao20 at 2015-08-29 17:40:16
需要了解详细的加载和求解过程,最好提供完整的模型。

finish
/clear
/prep7
KEYW,PR_SET,1   
KEYW,PR_STRUC,1
et,1,plane182
et,2,solid95
mp,ex,1,5e7
mp,nuxy,1,0.27
mp,dens,1,1720
tb,dp,1
tbdata,1,520e3,38.4,0
mp,ex,2,8e6
mp,nuxy,2,0.38
mp,dens,2,1865
tb,dp,2
tbdata,1,27e3,22.3,0
mp,ex,3,7e6
mp,nuxy,3,0.36
mp,dens,3,1880
tb,dp,3
tbdata,1,30e3,23,0
mp,ex,4,9e6
mp,nuxy,4,0.32
mp,dens,4,1890
tb,dp,4
tbdata,1,31e3,26,0
mp,ex,5,3e7
mp,nuxy,5,0.33
mp,dens,5,2000
tb,dp,5
tbdata,1,37e3,28.4,0
RECTNG,-0.2,0.2,0,-7.5,
RECTNG,0.2,2.2,0,-3,
RECTNG,-0.2,-2.2,0,-3,  
RECTNG,-0.2,-2.2,-3,-6,
RECTNG,0.2,2.2,-3,-6,   
RECTNG,0.2,2.2,-6,-7.5,
RECTNG,-0.2,-2.2,-6,-7.5,   
RECTNG,-2.2,2.2,-7.5,-15,
/pnum,area,1
/pnum,line,1
asel,s,,,2,8,1
aglue,all
numcmp,all
allsel
aplot
lsel,s,,,1,3,2  
lesize,all,,,2  
lsel,s,,,2,4,2  
lesize,all,,,15
amesh,1
lsel,s,,,6,8,2  
lesize,all,0.5  
lsel,s,,,5  
lesize,all,0.5  
lsel,s,,,7  
lesize,all,0.5  
amesh,2
lsel,s,,,10,12,2
lesize,all,0.5  
lsel,s,,,9  
lesize,all,0.5  
lsel,s,,,11
lesize,all,0.5  
amesh,3
! aplot   
lsel,s,,,18,19,1
lesize,all,0.5  
lsel,s,,,14
lesize,all,0.5  
amesh,4
lsel,s,,,20,21,1
lesize,all,0.5  
lsel,s,,,13
lesize,all,0.5  
amesh,5
lsel,s,,,22,23,1
lesize,all,0.5  
lsel,s,,,16
lesize,all,0.5  
amesh,6
lsel,s,,,24,25,1
lesize,all,0.5  
lsel,s,,,15
lesize,all,0.5  
amesh,7
lsel,s,,,27,28,1
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lsel,s,,,26
lesize,all,0.5
lsel,s,,,17
lesize,all,0.5  
amesh,8
extopt,esize,2.0,0
extopt,aclear,1
type,2
mat,1
vext,1,,,,,-0.2
extopt,esize,2.0,0
extopt,aclear,1
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mat,2
vext,2,3,1,,,-0.2
extopt,esize,2.0,0
extopt,aclear,1
type,2
mat,3
vext,4,5,1,,,-0.2
extopt,esize,2.0,0
extopt,aclear,1
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mat,4
vext,6,7,1,,,-0.2
extopt,esize,2.0,0
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type,2
mat,5
vext,8,,,,,-0.2
allsel
/view,1,1,1,1
eplot
vsel,s,,,all,,1
vsel,u,,,1
eslv,s  
nslv,s,1
nummrg,all  
numcmp,all
k,1001,2.2,0,-2
k,1002,2.2,-3,-2
k,1003,2.2,-6,-2
k,1004,2.2,-7.5,-2  
k,1005,2.2,-15,-2   
l,29,1001   
l,1001,1002
l,1002,28   
l,1002,1003
l,1003,36   
l,1003,1004
l,1004,42
l,1004,1005
l,1005,44
al,38,83,84,85
al,54,85,86,87
al,69,87,88,89
al,74,89,90,91
extopt,esize,10.0,0
extopt,aclear,1
type,2
mat,2
vext,47,,,-4.4   
extopt,esize,10.0,0
extopt,aclear,1
type,2
mat,3
vext,48,,,-4.4
extopt,esize,10.0,0
extopt,aclear,1
type,2
mat,4
vext,49,,,-4.4
extopt,esize,10.0,0
extopt,aclear,1
type,2
mat,5
vext,50,,,-4.4
vplot
vsel,s,,,9,12,1
vplot
TYPE,   2   
MAT,    2
ESIZE,0.5,0,
MSHAPE,0,3D
MSHKEY,1
!*  
CM,_Y,VOLU  
VSEL, , , ,       9
CM,_Y1,VOLU
CHKMSH,'VOLU'   
CMSEL,S,_Y  
!*  
VMESH,_Y1   
!*  
CMDELE,_Y   
CMDELE,_Y1  
CMDELE,_Y2  
!*  
TYPE,   2   
MAT,       3
REAL,   
ESYS,       0   
SECNUM,
!*  
CM,_Y,VOLU  
VSEL, , , ,      10
CM,_Y1,VOLU
CHKMSH,'VOLU'   
CMSEL,S,_Y  
!*  
VMESH,_Y1   
!*  
CMDELE,_Y   
CMDELE,_Y1  
CMDELE,_Y2  
!*  
TYPE,   2   
MAT,       4
REAL,   
ESYS,       0   
SECNUM,
!*  
CM,_Y,VOLU  
VSEL, , , ,      11
CM,_Y1,VOLU
CHKMSH,'VOLU'   
CMSEL,S,_Y  
!*  
VMESH,_Y1   
!*  
CMDELE,_Y   
CMDELE,_Y1  
CMDELE,_Y2  
!*  
TYPE,   2   
MAT,       5
REAL,   
ESYS,       0   
SECNUM,
!*  
CM,_Y,VOLU  
VSEL, , , ,      12
CM,_Y1,VOLU
CHKMSH,'VOLU'   
CMSEL,S,_Y  
!*  
VMESH,_Y1   
!*  
CMDELE,_Y   
CMDELE,_Y1  
CMDELE,_Y2  
vsel,s,,,all,,1
vsel,u,,,1  
vplot   
eslv,s  
nslv,s,1
eplot   
nummrg,all  
numcmp,all  
allsel  
/pnum,area,1
/view,1,1,1,1  
/ang,1  
/pnum,mat,1,5,2
eplot   
allsel  
et,3,TARGE170  
ET,4,CONTA174
KEYOPT,4,9,0
KEYOPT,4,12,2
r,10
real,10
mp,mu,1,0.2
mp,mu,2,0.2
mp,mu,3,0.2
mp,mu,4,0.2
mp,mu,5,0.2
vsel,s,,,1  
vplot
asel,s,,,9,13,1
asel,u,,,12
aplot
cm,target,area  
type,3  
nsla,s,1
esurf,all   
esel,s,type,,3
eplot
! /psyms,esys,1   
allsel  
vsel,s,,,all
vsel,u,,,1
! vplot
asel,s,,,44
asel,a,,,18
asel,a,,,27
asel,a,,,39
asel,a,,,21
asel,a,,,30
asel,a,,,34
asel,a,,,55
asel,a,,,59
asel,a,,,61
! aplot   
cm,contact,area
type,4  
nsla,s,1
esurf,all
esel,s,type,,4
eplot
! /psyms,esys,1   
allsel  
gplot
/solu
nsubst,30
nlgeom,on
nropt,full
pred,on
lnsrch,on
outres,all,last
asel,s,loc,x,-2.2   
asel,a,loc,x,2.2
da,all,all  
aplot   
asel,s,loc,z,0  
da,all,symm
asel,s,loc,z,-2
da,all,all   
asel,s,loc,y,-15
da,all,all  
allsel,all
acel,0,9.8,0
allsel,all
save
finish
/solu
antype,,rest
time,1
sfa,all,3,pres,24e4
nlgeom,on
nsub,10,100,10,1
kbc,0
outres,all,all
allsel,all
solv
save
finish
/solu
antype,,rest
time,2
asel,s,,,12
sfa,all,3,pres,36e4
nlgeom,on
nsub,10,100,10,1
kbc,0
allsel,all
solv
save
finish
/solu
antype,,rest
time,3
asel,s,,,12
sfa,all,3,pres,48e4
nlgeom,on
nsub,10,100,10,1
kbc,0
allsel,all
solv
save
finish
/solu
antype,,rest
time,4
asel,s,,,12
sfa,all,3,pres,60e4
nlgeom,on
nsub,10,100,10,1
kbc,0
allsel,all
solv
save
finish
/solu
antype,,rest
time,5
asel,s,,,12
sfa,all,3,pres,72e4
nlgeom,on
nsub,10,100,10,1
kbc,0
allsel,all
solv
save
finish
/solu
antype,,rest
time,1
asel,s,,,12
sfa,all,3,pres,84e4
nlgeom,on
nsub,10,100,10,1
kbc,0
allsel,all
solv
save
finish
10楼2015-08-30 08:54:11
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shgao20

专家顾问 (职业作家)

【答案】应助回帖

★ ★ ★ ★ ★
感谢参与,应助指数 +1
yongdong2001: 金币+5, ★★★很有帮助 2015-08-21 11:06:39
一个办法是做瞬态分析,使用表数组定义载荷和施加载荷。
  另一个办法是做多载荷步分析,按你的需要,可以分为 6 个载荷步,施加的载荷值依次为:
      240 KPa; 360 KPa;  480 KPa;  600 KPa;  720 KPa;  840 KPa
  在求解模块中,一次性完成所有 6 个载荷步,则结果文件中会同时储存这 6 个载荷步的结果。
2楼2015-08-20 16:22:49
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ruixin231

新虫 (初入文坛)

【答案】应助回帖

感谢参与,应助指数 +1
做瞬态分析时,可以分6载荷步中,在TIMe/frequenc中设定载荷步数,然后用ramped
3楼2015-08-20 16:29:58
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shgao20

专家顾问 (职业作家)

在 TIMe/frequenc 中设定的不是载荷步数,而是是载荷子步数,即一个载荷步分为多个子步进行计算,以保证计算精度和收敛性。
4楼2015-08-21 16:13:14
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