Hello everybody<\/p>\n
<\/p>\n
I have a problem concerning the definition of a paired-based frictional contact between a plate (shell181 with conta173) and a fixture (solid185 with targe170). In the code below you can see how I set the contact up. My problem is that regardless of whether I define a linear (bonded) contact or a frictional contact, if I check the contact status with cncheck, the message says always that the contact is not closed. There is also no geometrical penetration or gap which could cause the contact to be open. This happens only with the Augmented Lagrange or Penalty method setup, if I change it to MPC-contact (keyopt,6,2,2) then the contact closes. The problem is that with MPC I cannot define a frictional contact.<\/p>\n
<\/p>\n
Did anybody have a similar problem and can give me some advice?<\/p>\n
<\/p>\n
For any suggestions I would be very happy.<\/p>\n
<\/p>\n
Best regards ElCid<\/p>\n
<\/p>\n
! Contact element
ET,6,CONTA173<\/p>\n
<\/p>\n
TB,FRIC,1,,,ISO
tbtemp,0
TBDATA,1,0.1<\/p>\n
<\/p>\n
TB,FRIC,4,,,ISO
tbtemp,0
TBDATA,1,0.1<\/p>\n
<\/p>\n
! key-options for contact elements (ID = 6) -> keyopt sets element key options
keyopt,6,1,0
keyopt,6,2,0 !Augmented
keyopt,6,12,0 ! Element type ID (4), No. of keyoption to be defined (12 = bonded), value of keyoption
keyopt,6,5,3 ! Auto gap,penetration correction<\/p>\n
<\/p>\n
r,1500
real,1500<\/p>\n
<\/p>\n
allsel,all,all<\/p>\n
<\/p>\n
csys,0<\/p>\n
<\/p>\n
esel,s,type,,5
nsle,s
nsel,r,loc,z,0
mat,4
Type,3 !Targe170 element defined previously
ESURF<\/p>\n
<\/p>\n
r,1500
real,1500<\/p>\n
<\/p>\n
csys,0
esel,s,type,,1
esel,r,cent,z,0
nsle,s
csys,1000
nsel,u,loc,x,0,bc_rad_free
csys,0
cmsel,u,bc_nodes_bot,node
Mat,1
Type,6
Esurf
csys,0<\/p>\n
<\/p>\n
allsel,all,all<\/u><\/p>\n","protected":false},"template":"","class_list":["post-31982","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t