```
TALK=f;RUN(1,1)
DISPLAY
similar to s208
Problem: Plate is composed of two Horizontal materials with ten-fold difference
in Young's modulus.
Case 1: 'plane stress', z-surface free
Case 2:  'plane strain', z-surface fixed
Used Boundary Flow-Layers

PHOTON USE
p;;;;

set prop off
cl
msg x-displacement fields
gr ou z 1
cont U1 z 1 x 1 19 y 2 19 fil;.0001
pause
cl
msg y-displacement fields
gr ou z 1
cont V1 z 1 x 2 19 y 1 19 fil;.0001
vec z 1 x 1 20 y 1 20 col 0
pause

ENDDIS

************************************************************
Group 1. Run Title and Number
************************************************************
TEXT(Plate of two Horizontal materials; 2D[xy])
integer(caseno)
mesg(caseno = 1 : z free
mesg(caseno = 2 : z fixed
caseno=1
mesg(caseno=:caseno: Enter 1, 2 or blank
if(caseno.lt.1) then
endif
if(caseno.gt.2) then
endif
caseno
libref=caseno
Declarations and settings
REAL(FY,LX,LY,POISSON,YOUNG)
FY= 40.0e6  ! H/m^2 = 40 N/mm^2
LX=90.e-3
LY=120.e-3
INTEGER(NXBODY,NYBODY)

************************************************************
Group 2. Time dependence
************************************************************
Group 3. X-Direction Grid Spacing
CARTES  =    T
NXBODY = 18
NREGX=3                             ! 3 regions
IREGX=1;GRDPWR(X,1,0.01*LX,1.0)     ! single inner fluid cell
IREGX=2;GRDPWR(X,NXBODY,LX,1)
IREGX=3;GRDPWR(X,1,0.01*LX,1.0)     ! single outer fluid cell

************************************************************
Group 4. Y-Direction Grid Spacing
NYBODY = 18
NREGY=3                             ! 3 regions
IREGY=1;GRDPWR(Y,1,0.01*LY,1.0)     ! single inner fluid cell
IREGY=2;GRDPWR(Y,NYBODY,LY,1)
IREGY=3;GRDPWR(Y,1,0.01*LY,1.0)     ! single outer fluid cell
************************************************************
Group 5. Z-Direction Grid Spacing
NZ=1
ZWLAST  = 0.001
************************************************************
Group 7. Variables: STOREd,SOLVEd,NAMEd
ONEPHS  =    T
SOLVE(P1,V1,U1)
SOLUTN(P1  ,Y,Y,Y,N,N,N)
SOLUTN(U1  ,Y,Y,Y,N,N,Y)
SOLUTN(V1  ,Y,Y,Y,N,N,Y)

STORE(PRPS)
STORE(STRX,STRY,STRZ,STXY)
STORE(EPSY,EPSX,EPSZ)
************************************************************
GROUP 8. ITERATION NUMBERS ETC
RESFAC=1.e-7
RESREF(V1)=0.0
RESREF(U1)=0.0
LITER(V1) = 50
LITER(U1) = 50
LITER(P1) = 50

************************************************************
GROUP 9. PROPERTIES

CSG10='Q1'                  ! materials with various POISSON ratios
MATFLG=T;NMAT=2
160    7800.0    0.3       473.0   43.0      1.0e-5   0.5e-11
161    7800.0    0.3       473.0   43.0      1.0e-5   0.5e-10

************************************************************
GROUP 11. INITIAL VALUES
fiinit(p1)=0.0
fiinit(u1)=0.0
fiinit(v1)=0.0

FIINIT(PRPS)=0
PATCH(BODY1,INIVAL,2,NX-1,2,NY/2,1,1,1,1)
INIT(BODY1,PRPS,FIXVAL,160)
PATCH(BODY2,INIVAL,2,NX-1,NY/2+1,NY-1,1,1,1,1)
INIT(BODY2,PRPS,FIXVAL,161)
************************************************************
GROUP 13. BOUNDARY & SPECIAL SOURCES

PATCH(UP,north,1,NX,NY-1,NY-1,1,1,1,1) ! top - fixed V1
COVAL(UP,V1,FIXVAL,0.0)
PATCH(POINTU,CELL,1,1,NY-1,NY-1,1,1,1,1)  !  top-left - fixed U1
COVAL(POINTU,U1,FIXVAL,0)

*** bottom - upward force
PATCH(FORC01,NORTH,2,NX-1,1,1,1,1,1,1)
COVAL(FORC01,V1,FIXFLU,FY)

PATCH(PRESS,CELL,1,NX,1,NY,1,NZ,1,1)
COVAL(PRESS,P1,FIXVAL,0)

IF(CASENO.EQ.2) THEN
SPEDAT(BOUNDARY,ZCONST,R,1.e20)
ELSE
SPEDAT(BOUNDARY,ZCONST,R,0.0)
ENDIF
************************************************************
GROUP 15. TERMINATE SWEEPS
LSWEEP  =      1800
ISG21=LSWEEP
************************************************************
GROUP 17. RELAXATION
#CONPROM
RELAX(P1  ,LINRLX, 1.000000E+00)

spedat(rlxfac,rlxu1d,r,0.3)
spedat(rlxfac,rlxv1d,r,0.3)

************************************************************
GROUP 19. DATA TRANSMITTED TO GROUND
STRA    =    T
PARSOL  =    F
ISG52   =    3   !   probe & res

************************************************************
GROUP 23.FIELD PRINT-OUT & PLOT CONTROL
TSTSWP = - 1   ! graphic-mode
NYPRIN = 1
IXMON = NX-2
IYMON = 2
IZMON = 1
#conprom

STOP
```