ANSYS做的輪胎模型

天鳥

2006年5月12日 21:03

瀏覽：472609 評論：2

fini
/cle
/prep7
/title,wheel-3

!_____________________________________定義單元類型__________________________________________________

et,1,45 !用來給土層，輪輞以及基層來分網格
et,2,181

!____________________________________________________________________________________________________

!____________________________________定義輪胎材料參數_________________________________________________
!___________________________定義超彈材料，用9常數模型(單位為MPa)___________________
mp,ex,1,8000e6
mp,prxy,1,0.4

!____________________________定義正交彈性材料(單位為MPa)___________________________
mp,ex,2,1.03e10
mp,prxy,2,0.33

mp,ex,3,2.1e11
mp,prxy,3,0.3

save,material4,db

/prep7
!_______________________________________定義道路幾何參數___________________________________________
areaload=0.557800e6 !單位mpa
arearadiu=0.1066 !單位m
top=0.5493
thick1=0.04+top !單位m
thick2=0.06
thick3=0.07
thick4=0.25
thick5=0.27
thick6=3.5
distanceofaxie=1.5*arearadiu !兩輪中心距

rightb=1.50
leftb=-1.50
frontb=1.50
backb=-1.50
depthb=-(thick1+thick2+thick3+thick4+thick5+thick6)
!___________________________________________________________________________________________________

!______________________________________定義道路材料參數_____________________________________________
ex1=1200e6 !單位MPa
prxy1=0.35
dens1=2.509e-03 !單位kg/m3

ex2=1000e6
prxy2=0.35
dens2=2.447e-03

ex3=1000e6
prxy3=0.35
dens3=2.432e-03

ex4=1400e6
prxy4=0.2
dens4=2e-03

ex5=800e6
prxy5=0.2
dens5=1.800e-03

ex6=35e6
prxy6=0.4
dens6=1.900e-03
!___________________________________________________________________________________________________

!________________________________定義道路材料參數__________________________________________________
mp,ex,4, ex1 !定義道路第一層材料參數
mp,PRXY,4,prxy1
mp,dens,4,dens1

mp,ex,5, ex2
mp,PRXY,5,prxy2
mp,dens,5,dens2

mp,ex,6, ex3
mp,PRXY,6,prxy3
mp,dens,6,dens3

mp,ex,7, ex4
mp,PRXY,7,prxy4
mp,dens,7,dens4

mp,ex,8, ex5
mp,PRXY,8,prxy5
mp,dens,8,dens5

mp,ex,9, ex6
mp,PRXY,9,prxy6
mp,dens,9,dens6
!__________________________________________________________________________________________________

/prep7
!______________________________建立輪胎模型_________________________________________________________
k,1,0,0,0
k,2,0,0,0.03
k,3,0,0.01,0
k,4,0.297,0,0
k,5,0.297,0,0.2
k,6,0.297,0,-0.2
k,7,0.297,0,0.01
k,8,0.297,0,-0.01
k,9,2,0,0.01
k,10,0,0,-0.005
k,11,0,0,0.005
k,12,0.4028,0,0
k,13,0.5425,0,0
k,14,0.4028,0.01,0
circle,1,0.297,2,4,360,1
l,5,6
LGEN,2,4,,1,0.01
l,6,19
l,5,18
lsel,s,,,4,7,1
al,all

lsel,all
VDRAG,1,,,,,,1,2,3
vsel,s,,,1,3,1
vadd,all !4

torus,0.4028,0.1362,0.1422 !1
torus,0.4028,0.1422,0.1465 !2

vsbv,2,4,sepo,dele,keep !3,5
vdele,3

vsbv,1,4,sepo,dele,keep !2,3
vdele,2

wpoffs,,, 0.110836
WPSTYLE,,,,,,,,1
wpstyle,0.05,0.1,-1,1,0.003,0,0,,5
vsbw,4,speo,dele
vdele,2

wpoffs,,, -0.110836*2
vsbw,1,speo,dele !輪輞寬0.11085
vdele,4

l,11,10 !40
circle,11,0.297,2,7,360,1
lsel,s,,,41,43,2
lsel,a,,,56
al,all !11
lsel,all
vdrag,11,,,,,,40 !1
vsel,s,,,1,2
vadd,all !4

vsel,all
vglue,3,4,5 !1內胎,2外胎,6輪輞

!分網格

HPTCREATE,area,11,, coord,0,0,0.005
HPTCREATE,area,73,, coord,0,0,-0.005
vsel,s,,,6
type,1
mat,3
mshape,1,3D
mshkey,0
esize,0.04
!要粗化
vmesh,all
vsel,all !1336,1178
csys,0

!給外輪胎分網格
!HPTCREATE,area,21,, coord,0,0.5493,0
vsel,s,,,2
type,2
mat,1
mshape,1,3D !定義單元形狀
mshkey,0
esize,0.02 !定義為自由網格
!可能要局部粗化
vmesh,all
vsel,all

!給輪胎束帶層分網格
vsel,s,,,1
type,2
mat,2
mshape,1,3D
mshkey,0
esize,0.02
!可能要局部粗化
vmesh,all

!在內胎的內面上施加面荷載
!13,14,67-70
asel,s,,,13,14
asel,a,,,67,70,1
nsla,s
SF,all,pres,0.63e6 !壓力單位為Pa
csys,0
save,finimodel,db

/prep7
!____________________________________________________定義路面_______________________________________________

block,rightb,leftb,-top,-thick1,frontb,backb !3
block,rightb,leftb,-thick1,-(thick1+thick2),frontb,backb !4
block,rightb,leftb,-(thick1+thick2),-(thick1+thick2+thick3),frontb,backb !5
block,rightb,leftb,-(thick1+thick2+thick3),-(thick1+thick2+thick3+thick4),frontb,backb!7
block,rightb,leftb,-(thick1+thick2+thick3+thick4),-(thick1+thick2+thick3+thick4+thick5),frontb,backb!8
block,rightb,leftb,-(thick1+thick2+thick3+thick4+thick5),depthb,frontb,backb!9

vglue,3,4,5,7,8,9 !3,10,11,12,13,14

vsel,s,,,3
type,1
mat,4
mshape,1,3D !定義單元形狀
mshkey,0
esize,0.0.5 !定義為自由網格
vmesh,all

vsel,s,,,10
type,1
mat,5
mshape,1,3D !定義單元形狀
mshkey,0
esize,0.15 !定義為自由網格
vmesh,all

vsel,s,,,11
type,1
mat,6
mshape,1,3D !定義單元形狀
mshkey,0
esize,0.18 !定義為自由網
vmesh,all

vsel,s,,,12
type,1
mat,7
mshape,1,3D !定義單元形狀
mshkey,0
esize,0.2 !定義為自由網格
vmesh,all

vsel,s,,,13
type,1
mat,8
mshape,1,3D !定義單元形狀
mshkey,0
esize,0.3 !定義為自由網格
vmesh,all

vsel,s,,,14
type,1
mat,9
mshape,1,3D !定義單元形狀
mshkey,0
esize,0.5 !定義為自由網格
vmesh,all

nsel,all
vsel,all
asel,all

fini
/solu

!__________________________________給道路加約束_______________________________________________
csys,0
nsel,all
nsel,r,loc,y,depthb
d,all,all,0

nsel,all
nsel,r,loc,x,rightb
nsel,a,loc,x,leftb
d,all,ux,0

nsel,all
nsel,r,loc,z,frontb
nsel,a,loc,z,backb
d,all,uz,0

save,pavemodel,db

fini
/prep7

!______________________________加接觸對_________________________________________
r,1001
et,11,targe170
et,12,conta174
KEYOPT, 12,2,1 !定義使用罰函數
KEYOPT, 12,12,1 !定義為無限大,忽略滑動
KEYOPT, 12,7,3 !對下一個子步預測一個最小的時間增量

asel,s,,,22
asel,a,,,100,101
nsla,s
!nsel,r,loc,y,-0.4,-0.5493,0.0001
cm,_contact12,node
type,12
real,1001
esurf,,buttom

asel,s,,,9 !目標面，選擇較為粗的網格
nsla,s
!nsel,r,loc,x,-0.8,0.8,0.0001
!nsel,r,loc,z,-0.7,0.7,0.0001
cm,_target12,node
type,11
real,1001
esurf,,top
save,contact,db
fini

fini
/solu
nsel,s,,,206
nsel,a,,,412
d,all,all,0
!d,all,uy,0

vsel,s,,,1,2
nsel,r,loc,x,0
d,all,ux,0

vsel,s,,,1,2
vsel,a,,,6
nsel,r,loc,z,0
d,all,uz,0

antype,static

asel,all
nsel,all

time,1
solve

但是其接觸部分的UY,UX方向位移明顯錯誤(問題1)

當我把材料一改為超彈材料
mp,ex,1,9000
mp,prxy,1,0.49
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,DENS,1,,1150
TB,mooney,1,1,9,MOON
TBTEMP,0
TBDATA,,0.770,,0.0671,,,0.0955
TBDATA,,,,,,,
MPTEMP,,,,,,,,
MPTEMP,1,0

登錄后免費查看全文

立即登錄