Hi Gary...this is my solution so far...I told you that I wasn't happy with my results...so, any sugestion will be very helpfull
this is the imput file
/PREP7
ET,1,PLANE42
KEYOPT,1,3,3
KEYOPT,1,2,1
MP,EX,1,3.0E4
MP,NUXY,1,0.0
RECTNG,0,10,0,10
R,1,0.5
/PNUM,LINE,1
LPLOT
LESIZE,1,,,60
LESIZE,2,,,60
LESIZE,3,,,60
LESIZE,4,,,60
AMESH,1
/SOLU
NSEL,S,LOC,x,0,0.5
NSEL,R,LOC,y,0
D,ALL,ALL,0
NSEL,S,LOC,x,9.5,10
NSEL,R,LOC,y,0
D,ALL,ALL,0
NSEL,S,LOC,x,5
NSEL,R,LOC,y,10
F,ALL,FY,-5
ALLSEL
SAVE
SOLVE
/POST1
PATH,Sec1,2
PPATH,1,,5,0
PPATH,2,,5,10
PDEF,sx,s,x,NOAV
PLPAGM,sx,100
PLPATH,sx
PATH,Sec2,2
PPATH,1,,5,0
PPATH,2,,5,10
PDEF,uy,u,y,NOAVG
PLPAGM,uy,100
PATH,Sec3,2
PPATH,1,,0,0
PPATH,2,,0,10
PDEF,sx,s,x,NOAV
PLPAGM,sx,50
PLDISP,1
PRNSOL,U,y
NSEL,S,LOC,x,5
NSEL,R,LOC,y,0
PRNSOL,U,y