這是最終的模型，
這是施加約束后的情況，下面是命令流
FINISH
/CLEAR
/FILNAME,RCB,1
/TITLE,RCB
/PREP7
ET,1,SOLID65
ET,2,LINK8
ET,3,SOLID45
ET,4,PLANE42
R,1,,,,,,,
R,2,113.09
R,3,201.06
R,4,50.27 !單筋面積
MP,EX,1,25460 !初始彈性模量
MP,PRXY,1,0.2
!FC=26.8.0，FT=2.4 !混凝土單軸抗壓強度和單軸抗拉強度
!破壞準則
tb,concr,1,1,9
tbtemp,0
tbdata,,0.5,0.95,2.4,-1 !定義混凝土材料及相關參數，關閉壓碎
!定義混凝土應力應變曲線,用MISO模型
TB,MISO,1,,11
TBPT,,0.0002,5.092
TBPT,,0.0004,9.648
TBPT,,0.0006,13.668
TBPT,,0.0008,17.152
TBPT,,0.0010,20.1
TBPT,,0.0012,22.521
TBPT,,0.0014,24.388
TBPT,,0.0016,25.728
TBPT,,0.0018,26.532
TBPT,,0.0020,26.8
TBPT,,0.0033,36.8
MP,EX,2,2E5
MP,PRXY,2,0.2
tb,bkin,2,1,2,1
tbdata,,350 !屈服應力
MP,EX,3,2e5
MP,PRXY,3,0.25
TB,BKIN,3,1,2,1
TBDATA,,360,20000,,,,
N,1,0
N,2,15
N,12,185
FILL,2,12,9
N,13,200
NGEN,2,13,1,13,1,0,25,0
NGEN,11,13,14,26,1,0,31,0
NGEN,2,13,144,156,1,0,15,0
/VIEW,1,1,1,1
NGEN,2,1000,1,169,1,0,0,50
NGEN,8,1000,1001,1169,1,0,0,100
NGEN,5,1000,8001,8169,1,0,0,150
NGEN,8,1000,12001,12169,1,0,0,100
NGEN,2,1000,19001,19169,1,0,0,50
TYPE,2,
REAL,4
MAT,2
*do,ii,1015,1024,1
e,ii,ii+1
*enddo
*do,ii,1145,1154,1
e,ii,ii+1
*enddo
*do,ii,1015,1132,13
e,ii,ii+13
*enddo
*do,ii,1025,1142,13
e,ii,ii+13
*enddo
egen,19,1000,1,40,1
TYPE,2
REAL,2
MAT,2
*do,ii,145,19145,1000
e,ii,ii+1000
*enddo
*do,ii,155,19155,1000
e,ii,ii+1000
*enddo
TYPE,2
REAL,3
MAT,2
*do,ii,15,19015,1000
e,ii,ii+1000
*enddo
*do,ii,25,19025,1000
e,ii,ii+1000
*enddo
/view,1,1,1,1
/pnum,elem,0
/pnum,node,0
/eshape,1
eplot
K,1,0
K,2,15
K,3,185
K,4,200
K,5,200,25
K,6,200,335
K,7,200,350
K,8,185,350
K,9,15,350
K,10,0,350
K,11,0,335
K,12,0,25
A,1,2,3,4,5,6,7,8,9,10,11,12
TYPE,4
LESIZE,1,,,1
LESIZE,2,,,10
LESIZE,3,,,1
LESIZE,4,,,1
LESIZE,5,,,10
LESIZE,6,,,1
LESIZE,7,,,1
LESIZE,8,,,10
LESIZE,9,,,1
LESIZE,10,,,1
LESIZE,11,,,10
LESIZE,12,,,1
LSEL,S,,,1,3,1
LCCAT,ALL
LSEL,S,,,4,6,1
LCCAT,ALL
LSEL,S,,,7,9,1
LCCAT,ALL
LSEL,S,,,10,12,1
LCCAT,ALL
ALLSEL
AMESH,1
LSEL,S,LCCA
LDELE,all
TYPE,1
REAL,1
MAT,1
EXTOPT,ESIZE,42
EXTOPT,ACLEAR,1
VEXT,ALL,,,,,2100
K,25,0,0,100
K,26,200,0,100
K,27,200,-20,100
K,28,0,-20,100
A,25,26,27,28
TYPE,4
LESIZE,37,,,4
LESIZE,40,,,1
LESIZE,39,,,4
LESIZE,38,,,1
AMESH,15
TYPE,3
REAL,1
MAT,3
EXTOPT,ESIZE,4
EXTOPT,ACLEAD,1
VEXT,15,,,,,100
VGEN,2,2,,,,,1800
K,41,0,350,700
K,42,200,350,700
K,43,200,370,700
K,44,0,370,700
A,41,42,43,44
TYPE,4
LESIZE,61,,,4
LESIZE,62,,,1
LESIZE,63,,,4
LESIZE,64,,,1
AMESH,27
TYPE,3
REAL,1
MAT,3
EXTOPT,ESIZE,4
EXTOPT,ACLEAR,1
VEXT,27,,,,,100
VGEN,2,4,,,,,600
nummrg,all
numcmp,all !合并壓縮復制節點和單元
/SOLU
NSEL,S,LOC,Y,-20
NSEL,R,LOC,Z,150
D,ALL,UY
D,ALL,UX
NSEL,S,LOC,Y,-20
NSEL,R,LOC,Z,1950
D,ALL,all
ALLSEL,ALL
F,7427,FY,-120000
F,7386,FY,-120000
nlgeom,on
NSUBST,100
OUTRES,ALL,ALL
NEQIT,50
pred,on
CNVTOL,U, ,0.05,2
allsel
SOLVE
這是整個命令流，我在書上看的混凝土用MISO模型，用15.0版的ansys是不能夠有下降段的。怎樣才能可以設置下降段呢？
現在這個出現的主演問題就是
u
我嘗試著把網格劃分變粗一點也問題也沒有得到解決，請問各位高手，對于我這種結構，改怎樣處理這種問題啊，第一次接觸ANSYS，有很多不清楚，請各位高手幫忙
崔國勇 
