钢架模型ansys计算

钢架杆件横截面面积均为3250mm2，荷载施加在桁架上，如图1所示，材料弹性模量E=2.1×105Mpa，泊松比μ=0.3.密度 =7.8×103Kg/m3。

下面是ansys的分析过程。

图1 桁架尺寸及荷载情况
1 进入ansys
2 设置不同日期和时间
3选择单元模型
4定义材料参数
5定义实常数
6定义水平杆间的长度和杆的高度
7生成几何模型
Step1生成3个关键点
Step2建立3条线
Step3复制线
Step4对模型进行分析
Step5设置所有单元线上划分单元的个数
Step6对所选择线进行单元划分
8对模型施加边界条件
Step1对关键点1、9施加固定边界条件
Step2对关键点3、6施加边界条件
图2 模型形状9分析计算
10结果的一般显示
（1）
图3 变形位移显示（2）
图4对线形单元按实体效果进行显示（以3倍比例）（3）
图5 Y方向的位移云图
11 线性单元内力结果显示
Step1 定义线性单元I、J节点的轴力
Step2 画出单元的受力图
图6 轴力情况图轴力结果如下
（2）单元计算结果
单元轴向力：
LOAD STEP= 1 SUBSTEP= 1 TIME= 1.0000 LOAD CASE= 0
ELEM SMIS1
1 -0.26942E+06
2 0.13470E+06
3 0.26942E+06
4 -26942.
5 0.28287E+06
6 26942.
7 0.29637E+06
8 0.14817E+06
9 -0.29637E+06
10 -0.26940E+06
11 -0.29634E+06
MINIMUM V ALUES
ELEM 9
V ALUE -0.29637E+06
MAXIMUM V ALUES
ELEM 7
V ALUE 0.29637E+06
单元支反力结果：
LOAD STEP= 1 SUBSTEP= 1
TIME= 1.0000 LOAD CASE= 0
THE FOLLOWING X,Y,Z SOLUTIONS ARE IN THE GLOBAL COORDINATE SYSTEM
NODE FX FY
1 0.20373E-09 0.23333E+06
7 0.25667E+06
TOTAL V ALUES
V ALUE 0.20373E-09 0.49000E+06
获取支撑节点1处的y方向支反力，赋给Ry 1：
获取支撑节点7处的Y方向支反力，赋值给Ry7
计算结果如下：
ABBREVIATION STATUS-
ABBREV STRING
SA VE_DB SA VE
RESUM_DB RESUME
QUIT Fnc_/EXIT
POWRGRPH Fnc_/GRAPHICS
PARAMETER STATUS- ( 25 PARAMETERS DEFINED)
(INCLUDING 19 INTERNAL PARAMETERS)
NAME V ALUE TYPE DIMENSIONS
A 3.60000000 SCALAR
B 3.11800000 SCALAR
I 1.00000000 SCALAR
MAXLAYER 0.00000000 SCALAR
RY1 233300.000 SCALAR
RY7 256700.000 SCALAR
12 退出系统
下面是Log文件
/BATCH
/COM,ANSYS RELEASE 11.0 UP20070125 18:53:36 11/03/2012 /input,menust,tmp,'',,,,,,,,,,,,,,,,1
/GRA,POWER
/GST,ON
/PLO,INFO,3
/GRO,CURL,ON
/CPLANE,1
/REPLOT,RESIZE
WPSTYLE,,,,,,,,0
/PLOPTS,INFO,3
/PLOPTS,LEG1,1
/PLOPTS,LEG2,1
/PLOPTS,LEG3,1
/PLOPTS,FRAME,1
/PLOPTS,TITLE,1
/PLOPTS,MINM,1
/PLOPTS,FILE,0
/PLOPTS,LOGO,1
/PLOPTS,WINS,1
/PLOPTS,WP,0
/PLOPTS,DATE,0
/TRIAD,ORIG
/REPLOT
!*
/PREP7
!*
ET,1,MASS21
!*
SA VE
!* MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,EX,1,,2100000000000 MPDATA,PRXY,1,,0.3 MPTEMP,,,,,,,,
MPTEMP,1,0
MPDE,EX,1
MPDE,PRXY,1
MPDATA,EX,1,,210000000000 MPDATA,PRXY,1,,0.3 MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,DENS,1,,7800
!*
!*
ETDEL,1
!*
ET,1,LINK1
!*
!*
SA VE
R,1,0.00325, ,
!*
SA VE
*SET,a,3.6
*SET,b,3.118
SA VE
K,1,0,0,0,
K,2,a/2,B,0,
RESUME
/COM,ANSYS RELEASE 11.0 UP20070125 18:59:52 11/03/2012 /AUTO,1
/REP,FAST
/PNUM,KP,1
/PNUM,LINE,1
/PNUM,AREA,0
/PNUM,VOLU,0
/PNUM,NODE,0
/PNUM,TABN,0
/PNUM,SV AL,0
/NUMBER,0
!*
/PNUM,ELEM,0
/REPLOT
!*
K,1,0,0,0,
K,2,a/2,B,0,
K,3,a,0,0,
SA VE
LSTR, 1, 2
LSTR, 1, 3
LSTR, 2, 3
SA VE
FLST,3,3,4,ORDE,2
FITEM,3,1
FITEM,3,-3
LGEN,3,P51X, , ,a, , , ,0
FLST,3,2,4,ORDE,2 FITEM,3,2
FITEM,3,5
LGEN,2,P51X, , ,a/2,b, , ,0 SA VE
NUMMRG,ALL, , , ,LOW !*
LESIZE,ALL, , ,1, ,1, , ,1, FLST,2,11,4,ORDE,2 FITEM,2,1
FITEM,2,-11
LMESH,P51X
FINISH
/SOL
FLST,2,1,3,ORDE,1 FITEM,2,1
!*
/GO
DK,P51X, , , ,0,ALL, , , , , , FLST,2,1,3,ORDE,1 FITEM,2,9
!*
/GO
DK,P51X, , , ,0,UY, , , , , , SA VE
/DIST,1,0.924021086472,1 /REP,FAST
SA VE
FLST,2,1,3,ORDE,1 FITEM,2,3
!*
/GO
FK,P51X,FY,-210e3 FLST,2,1,3,ORDE,1 FITEM,2,6
!*
/GO
FK,P51X,FY,-280000
SA VE
/STATUS,SOLU
SOLVE
FINISH
/POST1
PLDISP,1
/DIST,1,1.08222638492,1 /REP,FAST
/DIST,1,1.08222638492,1 /REP,FAST
/DIST,1,0.924021086472,1 /REP,FAST
/DIST,1,0.924021086472,1 /REP,FAST
/DIST,1,1.08222638492,1 /REP,FAST
/DIST,1,1.08222638492,1 /REP,FAST
/DIST,1,1.08222638492,1 /REP,FAST
/DIST,1,1.08222638492,1 /REP,FAST
/DIST,1,1.08222638492,1
/REP,FAST
/DIST,1,0.924021086472,1
/REP,FAST
/DIST,1,0.924021086472,1
/REP,FAST
/DIST,1,0.924021086472,1
/REP,FAST
/DIST,1,1.08222638492,1
/REP,FAST
/DIST,1,1.08222638492,1
/REP,FAST
/DIST,1,0.924021086472,1
/REP,FAST
/DIST,1,0.924021086472,1
/REP,FAST
/DIST,1,1.08222638492,1
/REP,FAST
/USER, 1
/FOC, 1, 6.32209400502 , 0.584690326081 , 0.00000000000 /REPLO
/DIST,1,1.08222638492,1
/REP,FAST
/DIST,1,0.924021086472,1
/REP,FAST
!*
/SHRINK,0
/ESHAPE,3
/EFACET,1
/RATIO,1,1,1
/CFORMAT,32,0
/REPLOT
!*
!*
/EFACET,1
PLNSOL, U,Y, 0,1.0
/DIST,1,1.08222638492,1 /REP,FAST
/DIST,1,1.08222638492,1 /REP,FAST
/DIST,1,1.08222638492,1 /REP,FAST
/DIST,1,1.08222638492,1 /REP,FAST
/DIST,1,1.08222638492,1 /REP,FAST
/DIST,1,0.924021086472,1 /REP,FAST
/DIST,1,0.924021086472,1 /REP,FAST
/DIST,1,0.924021086472,1 /REP,FAST
/DIST,1,1.08222638492,1 /REP,FAST
/DIST,1,0.924021086472,1 /REP,FAST
/DIST,1,0.924021086472,1 /REP,FAST
/DIST,1,1.08222638492,1 /REP,FAST
/DIST,1,0.924021086472,1
/REP,FAST
/DIST,1,0.924021086472,1
/REP,FAST
/DIST,1,1.08222638492,1
/REP,FAST
/DIST,1,1.08222638492,1
/REP,FAST
/DIST,1,1.08222638492,1
/REP,FAST
/REPLOT,RESIZE
/REPLOT,RESIZE
/REPLOT,RESIZE
/REPLOT,RESIZE
SA VE
A VPRIN,0, ,
ETABLE,bridge_I,SMISC, 1
!*
A VPRIN,0, ,
ETABLE,bridge_J,SMISC, 1
!*
A VPRIN,0, ,
ETABLE, ,U,X
!*
ETABLE,,ERASE,3
PLLS,BRIDGE_I,BRIDGE_J,0.5,0 /REPLOT,RESIZE
/DIST,1,0.924021086472,1
/REP,FAST
/DIST,1,1.08222638492,1
/REP,FAST
/DIST,1,1.08222638492,1 /REP,FAST
/DIST,1,1.08222638492,1 /REP,FAST
/DIST,1,0.924021086472,1 /REP,FAST
/DIST,1,1.08222638492,1 /REP,FAST
!*
PRESOL,SMISC,1
!*
PRRSOL,
PRRSOL,FY
*SET,Ry1,233300 PRRSOL,FY
*SET,Ry7,256700
*STAT
FINISH
! /EXIT,ALL。