If a pressure is applied to a free surface that comes into contact,
does the pressure remain active in ANSYS LS-DYNA?
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Yes. Please see the ANSYS LS-DYNA 10.0 example below (and attached as well) that demonstrates this behavior. ! = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = fini /clear /title, Check Effect of Pressure on Surfaces in Contact /plopts,info,1 /view,,1,2,3 /pnum,type,1 /num,1 /prep7 et,1,SOLID164 r,1 mp,ex,1,30.0e6 ! psi mp,prxy,1,0.30 ! unitless mp,dens,1,0.007 ! lbf-sec^2/in^4 (10 X true density) edmp,rigid,1,7,7 ! fixed rigid base ... et,2,SOLID164 r,2 mp,ex,2,30.0e6 ! psi mp,prxy,2,0.30 ! unitless mp,dens,2,0.007 ! lbf-sec^2/in^4 (10 X true density) edmp,hgls,2,5 et,3,SOLID164 r,3 mp,ex,3,30.0e6 ! psi mp,prxy,3,0.30 ! unitless mp,dens,3,0.007 ! lbf-sec^2/in^4 (10 X true density) edmp,hgls,3,5 block,0,100,0,10,0,60 block,20,40,10,30,20,40 block,60,80,10,30,20,40 esize,,1 *do,ii,1,3,1 /gopr *if,ii,ne,1,then esize,5.0 *endif vsel,s,volu,,ii mat,ii type,ii real,ii vmesh,ii allsel,below,volu cm,nblock%ii%,node cm,eblock%ii%,elem *enddo allsel,all edpart,create eddamp,all,,0.01 eddamp,2,,1.0e-4 eddamp,3,,1.0e-4 edcgen,ag eplot fini /solu nsel,s,loc,x,20 nsel,a,loc,x,60 d,all,ux,0.0 nsel,s,loc,z,20 d,all,uz,0.0 cmsel,s,nblock3 nsel,r,loc,y,10 cm,ncont,node esln cm,econt,elem nsel,s,loc,y,30 cm,nmove,node nsel,all esel,all *dim,etime,,2 etime(1)=0.0,0.101 *dim,ydisp,,2 ydisp(1)=0.0,-0.5 *dim,epres,,2 epres(1)=0.0,1.0e5 edload,add,uy,,nmove,etime(1),ydisp(1) /psf,pres,norm,2 edload,add,press,2,econt,etime(1),epres(1) time,0.10 edrst,50 edhtime,100 edhist,nblock2 edhist,nblock3 edenergy,1,1,1,1 edout,glstat solve save fini /post26 numvar,200 file,,his cmsel,u,nblock1 cmsel,u,eblock1 ntrack2=node(30,10,30) ntrack3=node(70,10,30) nsol,2,ntrack2,u,y,n2_uy nsol,3,ntrack3,u,y,n3_uy store,merge plvar,2,3 /wait,2 fini /post1 set,last /edge,,1 /dscale,,1 plnsol,s,y,2 . |
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