带预紧力的螺栓连接ANSYS分析

求助大神帮我看看是哪里出了问题，我按照这个命令流做的，但是最后在求解出现问题，没法显现应力应变图。

/CLEAR
/FILNAME,EXAMPLE47_1
/PREP7
ET,1,SOLID186
ET,2,TARGE170
ET,3,CONTA174
R,1,,,0.1
R,2,,,0.1
R,3,,,0.1
MP,EX,1,2E11
MP,PRXY,1,0.3
/VIEW,1,1,1,1
CYLIND,0.04,0.021,0.005,0.01,180,90

CYLIND,0.04,0.021,0.015,0.01,180,90

CYLIND,0.02,0.015,0.005,0.015,180,90

CYLIND,0.02,0.015,0.015,0.02,180,90

CYLIND,0.025,0.02,0.015,0.02,180,90

CYLIND,0.02,0.015,0.005,0,180,90

CYLIND,0.025,0.02,0.005,0,180,90

VGLU,3,4,5,6,7
VATT,1,1,1
ESIZE,0.002
MSHKEY,1
MSHAPE,0
VMESH,ALL

ASEL,S,,,51

NSLA,S,1
REAL,1
TYPE,2
ESURF
ALLS

ASEL,S,,,8
NSLA,S,1
REAL,1
TYPE,3
ESURF
ALLS

ASEL,S,,,7
NSLA,S,1
REAL,2
TYPE,2
ESURF
ALLS

ASEL,S,,,2
NSLA,S,1
REAL,2
TYPE,3
ESURF
ALLS

ASEL,S,,,1
NSLA,S,1
REAL,2
TYPE,2
ESURF
ALLS

ASEL,S,,,55
NSLA,S,1
REAL,2
TYPE,3
ESURF
ALLS

ASEL,S,,,1
NSLA,S,1
CP,1,UZ,ALL
ASEL,S,,,8
NSLA,S,1
CP,2,UZ,ALL
ALLS
PSMESH,,EXAMPLE,,VOLU,3,0,Z,0.01,,,,ELEMS
FINI

/SOLU
ASEL,S,LOC,Y,0
DA,ALL,UY
ASEL,S,LOC,X,0
DA,ALL,UX
ALLS
SLOAD,1,PL01,,FORCE,5000,1,2
SOLVE
SFA,8,,PRES,-1000/0.91028E-03
SFA,1,,PRES,-1000/0.91028E-03
SOLVE
FINI

/POST1
PLNSOL,S,Z
ASEL,S,,,2
NSLA,S,1
SET,FIRST
PRNLD,F
SET,NEXT
PRNLD,F
ALLS
FINI