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应助: 27 (小学生)
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帖子: 721
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虫号: 2716890
注册: 2013-10-11
性别: GG
专业: 机械结构强度学

[求助] 密封圈刚柔接触问题

最近做了一个关于O形密封圈的刚柔接触，但求解得到的密封圈没有形变，可能是接触约束有问题，但不知如何修改。求助各位大虾，命令流如下：
/PREP7
d1=3.15             !芯杆沟槽底直径d1,单位统一为mm
d2=1.8             !A-1型密封圈直径d2
d=6                !筒壁直径D
h1=1.42             !沟槽深度H
ET,1,182
KEYOPT,1,3,2
ET,2,169
!KEYOPT,2,2,1
!KEYOPT,2,4,111
ET,3,172
KEYOPT,3,12,0
MP,EX,1,1.4e4       !密封圈材料属性
MP,PRXY,1,0.4999
TB,HYPER,1,,,,
TBTEMP,0
TBDATA,,1.87,0.47,,,,
MP,MU,2,0.2
r,1
r,2
r,3
r,4
r,5

BLC5,d2*1.5,(d1/2+h1)/2,d2*3,d1/2+h1
CSYS,4
WPOFFS,d2*1.5-3/4*d2,d1/2
BLC4,0,0,3/2*d2,h1
asba,1,2
alls
NUMCMP,ALL
WPCSYS,-1,0
WPOFFS,d2*3-(d2*1.5-3/4*d2)-d2/2,d1/2+d2/2
CYL4,0,0,d2/2
WPCSYS,-1,0
WPOFFS,0,d1/2+d2
BLC5,d2*1.5,0.125*d1,d2*3,0.25*d1
WPCSYS,-1,0
NUMCMP,ALL
k,100,d2*1.5,d1/2+d2+0.125*d1
k,101,d2*1.5,d1/4
CSYS,0
!===============================================================
smrtsize,3
mshape,0,2D
mshkey,0
asel,s,area,,2
aatt,1,,1
amesh,all
allsel,all
!设置刚柔接触
! Generate the target surface    目标面为缸筒
LSEL,S,,,13,16
CM,_TARGET,LINE
TYPE,2
real,3
mat,2
LMESH,ALL
! Create a pilot node
KSEL,S,,,100
KATT,2,3,2,
KMESH,100
! Generate the contact surface
lsel,s,line,,9,10
NSLL,S
nsel,a,node,,2
CM,_CONTACT,LINE
TYPE,3                               !接触面为密封圈
REAL,3
ESURF

alls
LSEL,S,,,1,8
CM,_TARGET,LINE
TYPE,2
real,4
mat,2
LMESH,ALL
! Create a pilot node
KSEL,S,,,101
KATT,2,4,2,
KMESH,101
! Generate the contact surface
lsel,s,line,,11,12
!lsel,u,line,,10
NSLL,S
nsel,a,node,,4
nsel,a,node,,64
TYPE,3                               !接触面为密封圈
REAL,4
ESURF

alls
fini
/SOL
ANTYPE,0
nsel,s,node,,799
D,ALL,all
nsel,s,node,,790
D,ALL,Ux,0
D,all,rotz,0
D,ALL,Uy,-0.325
NLGEOM,ON
DELTIM,0.05,0.005,0.1
OUTRES,ALL,ALL
AUTOTS,ON
time,1
alls
solve
fini

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