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我最近用ansys模拟碳纤维布加固钢筋混凝土梁，不过好像有点问题，计算结束以后，梁好像没有变形呀！挠度始终是零，帮忙看看！谢谢了！' P* d& t2 G7 a4 s Z$ F9 t7 r* ]$ j. h
!碳纤维布加固钢筋混凝土梁有限元分析
* j3 w6 u, u1 z G( n4 n/com,structural' ]! v* W. I$ Y4 v j4 E
/prep74 I/ ]6 ~2 D& M' r* E- Y
!定义单元类型
/ b d: @) a' l' \" P: \. ~et,1,link8
0 G8 T5 T7 A3 }+ get,2,solid651 S! D4 h7 ^# j4 q/ `- _' l
et,3,plane42: J& _# l) t9 g9 ^) F, Y6 m
et,4,shell41
+ _) c- F2 \" p& i" M U- u1 `
!定义实常数
( Y% b8 A1 l% {% d* q' P( _8 ]. yr,1,28.3 !箍筋和受压钢筋
' v+ v. i' ` @" Hr,2,113.1 !受拉钢筋
% L+ \0 j0 S; P! K: hr,3 !混凝土
3 C( e6 s) C, Q! Y& m, L8 u$ or,4,0.12 !碳纤维布
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6 `9 T; K1 N" N4 z! \2 l& [( U!定义材料属性1 A, A" T4 |; L8 u6 [
mp,ex,1,2e5 !箍筋和受压钢筋5 [* C* p& S" \" ?/ Q, }. C; s
mp,prxy,1,0.25
' B" J" Z/ R. I9 {# ftb,bkin,1,1,2,1
+ h# U* T- S. y" xtbdata,,2002 o+ X: g0 y. B0 C
' n& i7 b/ i6 }' Xmp,ex,2,2e5 !受拉钢筋
' }' V9 J/ Z c8 g2 _: T( }mp,prxy,2,0.3% f" S6 D2 a# s" {. a* _* B
tb,bkin,2,1,2,1
! N3 f5 [7 n _6 f, \! ?" Ktbdata,,300. g% D0 b4 y0 n+ X- R& B
# A4 W# `; y, q, u) H$ u
mp,ex,3,30000 !混凝土3 ]! t( ]/ s# |& _, l7 n: Z! G
mp,prxy,3,0.2: d H1 m1 ], U7 `7 R" }: e- R
tb,conc,3,1,9
8 Y' \/ q0 a6 R# g! Utbdata,,0.4,1,2.04,-1
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, ^6 i% h7 t8 L3 Imp,ex,4,225000 !碳纤维布6 x' v9 V# j' h8 v
mp,prxy,4,0
9 s* l+ Z' ?1 v, Z8 s: ntb,bkin,4,1,2,1
7 F6 f5 b* z i" ctbdata,,4300
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/pnum,elem,1
+ h( E) \0 ?$ F/ V% w, l6 A" I7 \( @; ?
$ [; |6 v0 B% R/ I H!产生所有的节点) `# S- J3 Q% o0 U6 R6 }1 Q6 f8 B7 N
n,18 h! n7 N9 j4 w* t7 \0 q
n,6,100! Y4 e9 R# T& {" U! d' I' ?
fill,1,6
( v% I9 j4 L% _' Tngen,9,6,1,6,1,,25
& ]) n1 ^# n qngen,33,1000,1,54,1,,,-250 ~2 z( s' a$ K5 [/ t/ @! d9 U3 h
/view,1,1,1,1$ R: w! C1 j/ S* L
nplot$ J" l8 p: S' W7 v+ a1 m
m4 |1 P1 ~ T2 D/ ^' F' u I
!箍筋和受压钢筋单元建立
* j9 w. v$ b. H, h$ p) @type,1
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mat,1
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e,ii,ii+1
9 O8 R# `5 |/ F$ M& e9 C# g*enddo
, B2 u$ {4 A$ ^5 i, r: Q0 c4 ?" y*do,ii,11,41,60 g6 L5 h+ F. s0 r' k* ]: a
e,ii,ii+6$ F7 j$ s0 T1 U, u) |
*enddo
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e,ii,ii+1: N, X; j7 b' Z U& g! U
*enddo
2 Q7 h# E2 q3 @$ O$ M*do,ii,8,38,6
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*enddo. I" F5 F) I2 o
egen,6,4000,1,18,1
* v3 I- r% F* h W5 X* G7 k# i9 N!受压钢筋+ {6 ]/ [+ a* T
*do,ii,44,19044,1000
7 |4 k9 z0 g* u @6 e" O. c e,ii,ii+10000 `& M7 Z* G9 H: a
*enddo4 E- H+ W N/ ~9 V7 k+ x( h+ Z' `/ u
*do,ii,47,19047,1000
: A2 a6 v/ d# E e,ii,ii+1000
" ^2 h% e0 V: k# K; I# S6 w# y*enddo
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% n9 k: d: d$ E) c!纵向受拉钢筋单元建立
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real,2. g& X: h6 x& q1 Z
mat,2
0 ?6 \/ v2 W( c; ^3 }. l0 v1 M/ l2 ^*do,ii,8,31008,1000
) I5 `4 w6 M% Y: i" X( v0 X e,ii,ii+1000
8 Z2 _4 J' u2 m- e+ w1 O% a4 Y*enddo( K3 Q; i$ C: L$ b
*do,ii,11,31011,1000& H; B5 }' b2 [* W
e,ii,ii+1000
7 t4 R9 r9 v9 s) A4 n# a9 H3 o$ u*enddo
2 e7 G+ R6 x. ]7 Z!碳纤维布单元的建立4 X$ W7 Q8 u, c/ u
type,43 d9 y, m! r& b! r% j
real,4% }& O9 m6 R3 a
mat,4' D- \7 t5 E- V8 y3 F# H
*do,ii,1,5,1$ y4 C- Z" |4 B) d
*do,jj,ii,31000+ii,1000
3 |3 }9 z3 n9 i) d5 p e,jj,jj+1,jj+1000. |5 b- A" l; ?* R( W
e,jj+1,jj+1000,jj+1000+1( b. Z% k9 [: u. z
*enddo
0 v9 T9 _& \, p& F5 C*enddo' }1 k6 @( ^3 F1 D0 o5 H. ], k0 u
1 k a, d' n+ o2 m3 l q# X( x& I
/view,1,1,1,1
+ b y6 d) b8 J/ [' j/pnum,elem,0' N2 ~$ Q* y4 [5 t
/pnum,node,01 ? j) N& H* X V
/eshape,1
) _; I7 ]; D0 L. X% heplot& i' Q8 `5 N$ `0 [2 `# a8 h
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!混凝土单元的建立2 B4 n, j! u* k% z1 Y8 p
k,1
2 g$ } _) \1 \7 \& T! N2 v6 Xk,2,100
3 p$ v2 T0 V2 P* C Z0 e" n+ tk,3,100,200& {$ n9 Z% b: n- }/ V
k,4,,200 P* a5 X. ]5 ?/ P; s- o& e6 Y
a,1,2,3,4, I. F# O3 b0 s, X7 n8 O2 e1 Y$ T
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lsel,s,loc,y,0
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lesize,all,,,53 D0 c$ Q" ~. E* m% f8 x
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lsel,s,loc,x,0
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lesize,all,,,8
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7 I' `6 y% J2 u, n- ymat,3" @9 ^$ J a& n" O3 O
extopt,esize,32# z. H0 C$ n. `; X7 S
extopt,aclear,1, ~! C5 m% f! Q+ z0 ?$ [
vext,all,,,,,-8009 i- g5 Q1 ?& Y
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/pnum,node,0
+ S3 h! d8 } b" |/pnum,elem,0
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0 h9 Q& t7 _' _: o! E7 oeplot: n/ }" f: T7 r
allsel. U- u. N1 Y, L5 S4 a" q K/ i
nummrg,all, |( T2 o( [7 R) _
numcmp,all
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nsel,s,loc,y,0, \9 |: u8 T; b6 F
nsel,r,loc,z,0: t+ S( `, e7 N9 c! ]/ T3 N5 J o
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asel,s,loc,z,-800
' _ `2 Y, m; L, |" Tda,all,symm
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+ N+ K; B' t* Kallsel* A9 I. p( P2 H$ M
gplot
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5 z z# @( a8 n- Gnsel,a,node,,1134,1134,1
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* b# W9 G* P' b9 Lnsel,s,node,,1130,1133,1* z. C: k2 N5 F0 x' e1 k* ^
f,all,fy,-2000
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pred,on/ [0 ]: v- n2 c8 F ]2 A
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