{"id":358295,"date":"2024-03-21T09:46:28","date_gmt":"2024-03-21T09:46:28","guid":{"rendered":"\/forum\/forums\/reply\/358295\/"},"modified":"2024-03-21T09:46:28","modified_gmt":"2024-03-21T09:46:28","slug":"358295","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/358295\/","title":{"rendered":"Reply To: Need micromovement in X, Y and Z directions"},"content":{"rendered":"

<p>CONTA174 has TASS and TASR for sliding in contact R and S directions. See the following command snippet. It’s probably not the best way since I did an arithmetic average to get an element value. R and S directions can be different for every contact element:<\/p><p>! Turn on “Analysis Settings > Output Controls > Contact miscellaneous”<br>! “contact_results” should be a named selection containing “contact” faces not target faces.<br>! nonlinear contacts will only have contacting area where status is sliding or sticking<br>! sliding and sticking regions will also have nonzero contact pressure.<br>! This snippet gets values at nodes (might be averaged from element centroid). It then averages by just adding the 4 nodes and dividing by 4.<br>! The pletab then averages element values to nodes for contour display.  There is probably a better way than all this averaging.<br>! Maybe just put nodal values to a nodal result quantity: *VPUT, then use a User Defined Result to plot that result quantity<br>! You could alternatively just plot a user defined result in Mechanical, such as CONTNMISC17 to get R direction sliding on only I nodes (no averaging for connected elements).<\/p><p>\/post1<br>cmsel,s,contact_results               ! contact_results should be a named selection containing contact faces (1 side)<br>esln,s,1,active                       ! contact elements will not be in a component so select attached elements<br>set,last<br>etable,sta,cont,stat                  ! It also gets inactive contact side from the symmetric contacts, so get status<br>esel,u,etab,sta,0,0                   ! remove elements with contact status = 0, which is for inactive and far open<br>etable,eras                           ! erase entire etable to clear data from possible previous calls to etable command<br>esel,r,enam,,174                      ! may need to elliminate any other connected types, such as beams, mpc184<br>                                      ! If selecting all contacts, use esel,s,enam,,174 and delete previous commands through cmsel<br>                                      ! can also just get contact using a command snippet under the contact, mcid = cid, then use esel,s,type,,mcid under Solution<\/p><p>! sliding distance in S direction<br>*do,i,1,4<br>  etable,sslide%i%,nmisc,i+20         ! etable sequence numbers for tass at each node 21,22,23,24 (I,J,K,L)<br>*enddo<br>sadd,temp1,sslide1,sslide2<br>sadd,temp2,sslide3,sslide4<br>sadd,sslidet,temp1,temp2<br>smult,sslide,sslidet,,0.25<\/p><p>! sliding distance in R direction<br>*do,i,1,4<br>  etable,rslide%i%,nmisc,i+16         ! etable sequence numbers for tasr at each node 17,18,19,20 (I,J,K,L)<br>*enddo<br>sadd,temp1,rslide1,rslide2<br>sadd,temp2,rslide3,rslide4<br>sadd,rslidet,temp1,temp2<br>smult,rslide,rslidet,,0.25<\/p><p>\/view,1,1,1,1                         ! Set isometric view<br>\/ang,1<br>\/auto,1                               ! fit to screen<br>\/show,png<br>pldisp,1                              ! display both displaced and undisplaced model. use \/PLOPTS for other contour display options<br>pletab,sslide,avg<br>pletab,rslide,avg<br>! need to show coordinate system and undeformed model<\/p><\/p>\n","protected":false},"template":"","class_list":["post-358295","reply","type-reply","status-publish","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