ANSYS定义变截面.docx

ansys变截面梁的定义（ZZ）
ansys专区 2010-02-04 09:23:22 阅读198 评论0 字号：大中小
（例1：转自
变截面梁的定义
定义变截面梁之前需定义两个截面：
SECTYPE，1，BEAM，HREC，，0 ！空芯矩形截面1
SECDATA,10,20,2,2,2,2,0,0,0,0 ！截面1尺寸定义
SECTYPE，2，BEAM，HREC，，0 ！空芯矩形截面2
SECDATA,8,10,2,2,2,2,0,0,0,0 ！截面2尺寸定义
！定义两个截面后,再定义变截面
SECTYPE,3,TAPER,, ！变截面3
SECDATA,1,,,,
SECDATA,2,10 ！截面由1变到2,位置由(0,0,0)变到(10,0,0,)

（例2：转自
finish
/clear
/PREP7
A_HYT1=0.4 !A端
A_HYB1=0.1 !A端
B_HYT1=0.2 !B端
B_HYB1=0.1 !B端
OFFSET=0.5 !偏移
!*
ET,1,BEAM54
!*
!*
*SET,_RC_SET,1,
R,_RC_SET,0.08,0.0010666666666667,A_HYT1,A_HYB1,
RMODIF,_RC_SET,9,0,-OFFSET,
RMODIF,_RC_SET,14,0,
RMODIF,_RC_SET,5,0.2*0.2,0.2*0.2**3/12,B_HYT1,B_HYB1,
RMODIF,_RC_SET,11,0,-OFFSET,
RMODIF,_RC_SET,15,0,
RMODIF,_RC_SET,13,0,
RMODIF,_RC_SET,16,0, , ,
!*
*SET,_RC_SET,2,
R,_RC_SET,0.08,0.0010666666666667,A_HYB1,A_HYT1,
RMODIF,_RC_SET,9,0,OFFSET,
RMODIF,_RC_SET,14,0,
RMODIF,_RC_SET,5,0.2*0.2,0.2*0.2**3/12,B_HYB1,B_HYT1,
RMODIF,_RC_SET,11,0,OFFSET,
RMODIF,_RC_SET,15,0,
RMODIF,_RC_SET,13,0,
RMODIF,_RC_SET,16,0, , ,
!*
!*
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,EX,1,,200e3
MPDATA,PRXY,1,,.2
N,1,0,,,,,,
N,2,5,,,,,,
N,3,10,,,,,,
TYPE, 1
MAT, 1
REAL, 1
!*
e,1,2
REAL, 2
e,3,2
/eshap,1
EPLOT

（例3：转自

VM34是个变截面梁的例子，分别用SHELL63和BEAM44做的。

其中BEAM44的实常数是这样设置的：

ET,1,BEAM44

*DO,I,1,10                  ! CREATE DO LOOP FOR REAL CONSTANTS

R,I,  1,1,.003125*(I-1),.25,1     

RMORE,1,1,.003125* I   ,.25,1

*ENDDO

实常数的定义为：

Real Constants

Constants 1-24 (basic set): 

AREA1, IZ1, IY1, TKZB1, TKYB1, IX1, 

AREA2, IZ2, IY2, TKZB2, TKYB2, IX2, 

DX1, DY1, DZ1, DX2, DY2, DZ2, 

SHEARZ, SHEARY, TKZT1, TKYT1, TKZT2, TKYT2

（例4：转自

用beam188or189可以保证截面的连续性，下面是一个变截面桥墩  
fini  
/clear  
/filname,pounding  
/prep7  
/title,pounding  
et,1,82  
et,2,44  
et,3,188  
mp,ex,2,3.45E10  
mp,prxy,2,0.1667  
mp,dens,2,2500  
mp,ex,3,3.0e10  
mp,prxy,3,0.1667  
mp,dens,3,2500  
!  
!建立桥墩  
!1号桥墩位置  
k,100,0,-15.1,32.65  
k,101,0,-7.1,32.65  
k,102,0,-632.65  
k,103,0,-5.0,32.65  
k,104,0,-3.9,32.65  
k,105,0,-3.2,32.65  
k,106,0,-15.1,35 !参考点  
lstr,100,101  
*do,i,101,104  
lstr,i,i+1  
*enddo  
sectype,10,beam,rect  
secdata,5.667,2.0  
sectype,11,beam,rect  
secdata,5.0,2.0  
sectype,12,beam,rect  
secdata,5.47.4,2.311  
sectype,13,beam,rect  
secdata,6.478,2.889  
sectype,14,beam,rect  
secdata,7.0,3.2  
sectype,15,taper  
secdata,10,0.0,-15.1,32.65  
secdata,11,0.0,-7.1,32.65  
sectype,16,taper  
secdata,11,0.0,-7.1,32.65  
secdata,12,0.0,-6,32.65  
sectype,17,taper  
secdata,12,0.0,-6.0,32.65  
secdata,13,00,-5.0,32.65  
sectype,18,taper  
secdata,13,0.0,-5.0,32.65  
secdata,14,0.0,-3.9,32.65  
sectype,19,taper  
secdata,14,0.0,-3.9,32.65  
secdata,14,0.0,-3.2,32.65  

!划分网格  
*do,i,1,5,1  
lsel,s,,,i  
latt,3,15+(i-1),3,,106,106,15+(i-1)  
lesize,all,2.0  
lmesh,i  
*enddo  
/eshape,1.0  
eplot