ansys分析三跨连续箱梁

ansys分析三跨连续箱梁含命令流

建模和分析的关键步骤如下：

1、用箱梁的中心线来模拟板的边线，板厚即为箱梁的底板、顶板、腹板及翼缘板的厚度。

2、确定各个关键点的位置。

3、正确模拟倒角及渐变的翼缘板厚度及地板的厚度。

4、进入后处理分析受力及变形情况。

单元类型：shell63

材料属性：

mp,ex,1,3.5e10

mp,dens,1,2500

mp,prxy,0.1667

模型：

网格划分：

网格镜像：

施加约束：

自重：

第一主应力：

位移云图：

局部第一主应力：

局部第四强度等效应力：

局部位移：

命令流如下：

/prep7

/title,three span continus grider

k,1,0,0

k,2,-2.1,0

k,3,-2.6,-0.125

k,4,-2.8,-0.125

k,5,-3,-0.125

k,6,-3.4857,-0.1036

k,7,-3.9714,-0.0821

k,8,-4.4571,-0.0607

k,9,-4.9429,-0.0393

k,10,-5.4286,-0.0179

k,11,-5.9143,0.0036

k,12,-6.4,0.025

k,13,-2.800,-1.85

k,14,0.0000,-1.85

kgen,9,1,12,1,0,0,49/8,100

kgen,2,1,12,1,0,0,50,900

kgen,9,901,912,1,0,0,34.5/8,100

kgen,2,901,912,1,0,0,35,900

c1=0.000843399

c2=0.001701323

*dim,x1,array,8

x1(1)=49/8

x1(2)=2*49/8

x1(3)=3*49/8

x1(4)=4*49/8

x1(5)=5*49/8

x1(6)=6*49/8

x1(7)=7*49/8

x1(8)=8*49/8

*dim,x2,array,8

x2(1)=34.5/8

x2(2)=2*34.5/8

x2(3)=3*34.5/8

x2(4)=4*34.5/8

x2(5)=5*34.5/8

x2(6)=6*34.5/8

x2(7)=7*34.5/8

x2(8)=8*34.5/8

*dim,yb,array,8

yb(1)=-c1*x1(1)*x1(1) 

yb(2)=-c1*x1(2)*x1(2) 

yb(3)=-c1*x1(3)*x1(3) 

yb(4)=-c1*x1(4)*x1(4) 

yb(5)=-c1*x1(5)*x1(5) 

yb(6)=-c1*x1(6)*x1(6) 

yb(7)=-c1*x1(7)*x1(7) 

yb(8)=-c1*x1(8)*x1(8) 

*dim,ym,array,8

ym(1)=-c2*(x2(1)-34.5)*(x2(1)-34.5)+2.025

ym(2)=-c2*(x2(2)-34.5)*(x2(2)-34.5)+2.025

ym(3)=-c2*(x2(3)-34.5)*(x2(3)-34.5)+2.025

ym(4)=-c2*(x2(4)-34.5)*(x2(4)-34.5)+2.025

ym(5)=-c2*(x2(5)-34.5)*(x2(5)-34.5)+2.025

ym(6)=-c2*(x2(6)-34.5)*(x2(6)-34.5)+2.025

ym(7)=-c2*(x2(7)-34.5)*(x2(7)-34.5)+2.025

ym(8)=c2*(x2(8)-34.5)*(x2(8)-34.5)+2.025

kgen,2,13,14,1,0,yb(1),x1(1),100

kgen,2,13,14,1,0,yb(2),x1(2),200

kgen,2,13,14,1,0,yb(3),x1(3),300

kgen,2,13,14,1,0,yb(4),x1(4),400

kgen,2,13,14,1,0,yb(5),x1(5),500

kgen,2,13,14,1,0,yb(6),x1(6),600

kgen,2,13,14,1,0,yb(7),x1(7),700

kgen,2,13,14,1,0,yb(8),x1(8),800

kgen,2,813,814,1,0,0,1,100

kgen,2,913,914,1,0,ym(1),x2(1),100

kgen,2,913,914,1,0,ym(2),x2(2),200

kgen,2,913,914,1,0,ym(3),x2(3),300

kgen,2,913,914,1,0,ym(4),x2(4),400

kgen,2,913,914,1,0,ym(5),x2(5),500

kgen,2,913,914,1,0,ym(6),x2(6),600

kgen,2,913,914,1,0,ym(7),x2(7),700

kgen,2,913,914,1,0,ym(8),x2(8),800

kgen,2,1,14,1,0,0,-0.5,50

!****************************************************************************

et,1,shell63

mp,ex,1,3.5e10

mp,dens,1,2500

mp,prxy,0.1667

r,1,0.25

*do,i,0,16,1

a,1+i*100,1+(i+1)*100,2+(i+1)*100,2+i*100

*enddo

a,1,51,52,2

aatt,1,1,1

asel,none

r,2,0.375

*do,i,0,16,1

a,2+i*100,2+(i+1)*100,3+(i+1)*100,3+i*100

*enddo

a,2,52,53,3

aatt,1,2,1

asel,none

r,3,0.5

*do,i,0,16,1

a,3+i*100,3+(i+1)*100,4+(i+1)*100,4+i*100

a,4+i*100,4+(i+1)*100,5+(i+1)*100,5+i*100

*enddo

a,3,53,54,4

a,4,54,55,5

aatt,1,3,1

asel,none

*dim,hd,array,8

hd(8)=0.2

hd(7)=0.2+(3.4/7)*0.3/3.4

hd(6)=0.2+2*(3.4/7)*0.3/3.4

hd(5)=0.2+3*(3.4/7)*0.3/3.4

hd(4)=0.2+4*(3.4/7)*0.3/3.4

hd(3)=0.2+5*(3.4/7)*0.3/3.4

hd(2)=0.2+6*(3.4/7)*0.3/3.4

hd(1)=0.2+7*(3.4/7)*0.3/3.4

*do,i,1,7,1

r,30+i,hd(i+1),hd(i+1),hd(i),hd(i)

*enddo

*do,i,0,16,1

*do,k,5,11,1

a,k,k+50,k+1+50,k+1

a,k+i*100,k+(i+1)*100,k+1+(i+1)*100,k+1+i*100

aatt,1,k+26,1

asel,none

*enddo

*enddo

asel,none

r,4,0.5

*do,i,0,16,1

a,4+i*100,4+(i+1)*100,13+(i+1)*100,13+i*100

*enddo

a,4,54,63,13

aatt,1,4,1

asel,none

c3=6.2474e-05

c4=0.000126024

*dim,h1,array,8

h1(1)=0.25+c3*x1(1)*x1(1)

h1(2)=0.25+c3*x1(2)*x1(2)

h1(3)=0.25+c3*x1(3)*x1(3)

h1(4)=0.25+c3*x1(4)*x1(4)

h1(5)=0.25+c3*x1(5)*x1(5)

h1(6)=0.25+c3*x1(6)*x1(6)

h1(7)=0.25+c3*x1(7)*x1(7)

h1(8)=0.25+c3*x1(8)*x1(8)

*dim,h2,array,9

h2(1)=0.25+c3*x2(1)*x2(1)

h2(2)=0.25+c3*x2(2)*x2(2)

h2(3)=0.25+c3*x2(3)*x2(3)

h2(4)=0.25+c3*x2(4)*x2(4)

h2(5)=0.25+c3*x2(5)*x2(5)

h2(6)=0.25+c3*x2(6)*x2(6)

h2(7)=0.25+c3*x2(7)*x2(7)

h2(8)=0.25+c3*x2(8)*x2(8)

h1(1)=0.25+c3*x1(1)*x1(1)

h2(9)=0.4

*do,i,1,8,1

r,10+i,h1(i)

a,13+(i-1)*100,13+i*100,14+i*100,14+(i-1)*100

aatt,1,10+i,1

asel,none

*enddo

*do,i,1,9,1

r,20+i,h2(i)

a,13+(i+7)*100,13+(i+8)*100,14+(i+8)*100,14+(i+7)*100

a,13,63,64,14

aatt,1,20+i,1

asel,none

*enddo

r,50,2

a,1,51,64,14

a,801,901,914,814

aatt,1,50,1

asel,none

allsel

esize,0.4

mshape,0

mshkey,1

amesh,all

nsel,all

nsym,x,10000,1,80000,1

esym,,10000,1,10000,1

cskp,12,0,1714,1713,1701

nsym,z,100000,1,100000,1

esym,,100000,1,100000,1

allsel,

nummrg,all

!**************************************************************************************

csys,0

nsel,s,loc,y,-1.85

nsel,r,loc,x,-3,-2.6

nsel,r,loc,z,-0.5,0

d,all,ux,,,,,uy,roty,rotz

allsel

nsel,s,loc,y,-1.85

nsel,r,loc,x,2.6,3

nsel,r,loc,z,-0.5,0

d,all,ux,,,,,uy,roty,rotz

allsel

nsel,s,loc,y,-1.85

nsel,r,loc,x,-3,-2.6

nsel,r,loc,z,169,169.5

d,all,ux,,,,,uy,roty,rotz

allsel

nsel,s,loc,y,-1.85

nsel,r,loc,x,2.6,3

nsel,r,loc,z,169,169.5

d,all,ux,,,,,uy,roty,rotz

allsel

nsel,s,loc,y,-3.875

nsel,r,loc,x,2.6,3

nsel,r,loc,z,49,50

d,all,ux,,,,,uy,uz,roty,rotz

allsel

nsel,s,loc,y,-3.875

nsel,r,loc,x,-3,-2.6

nsel,r,loc,z,49,50

d,all,ux,,,,,uy,uz,roty,rotz

allsel

nsel,s,loc,y,-3.875

nsel,r,loc,x,2.6,3

nsel,r,loc,z,119,120

d,all,ux,,,,,uy,uz,roty,rotz

allsel

nsel,s,loc,y,-3.875

nsel,r,loc,x,-3,-2.6

nsel,r,loc,z,119,120

d,all,ux,,,,,uy,uz,roty,rotz

allsel

!*************************************************************************************

!*

/solu

allsel

acel,,9.8

solve

/post1

plnsol,s,1

nsel,s,loc,z,10

esln,s,,all

plnsol,s,1

finish

save