ANSYS铁塔梁杆模型为啥刚度特别大？模型按设计图规格建模，周期特别小，施加荷载位移特别小。

附ANSYS命令流：

/cle

/fil,TowerModeling

/tit,5AJ1Tower

/prep7

et,1,beam188

et,2,link8

mp,ex,1,2.1e11

mp,prxy,1,0.28

mp,dens,1,7850

tb,bkin,1

tbdata,1,3.45e8

mp,ex,2,2.1e11

mp,prxy,2,0.28

mp,dens,2,7850

tb,bkin,2

tbdata,1,2.35e8

!定义梁截面

sectype,1,beam,l,,0

secoffset,cent

secdata,0.16,0.16,0.014,0.014

sectype,2,beam,l,,0

secoffset,cent

secdata,0.16,0.16,0.012,0.012

sectype,3,beam,l,,0

secoffset,cent

secdata,0.16,0.16,0.01,0.01

sectype,4,beam,l,,0

secoffset,cent

secdata,0.14,0.14,0.012,0.012

sectype,5,beam,l,,0

secoffset,cent

secdata,0.125,0.125,0.01,0.01

sectype,6,beam,l,,0

secoffset,cent

secdata,0.125,0.125,0.008,0.008

sectype,7,beam,l,,0

secoffset,cent

secdata,0.1,0.1,0.01,0.01

sectype,8,beam,l,,0

secoffset,cent

secdata,0.1,0.1,0.008,0.008

sectype,9,beam,l,,0

secoffset,cent

secdata,0.09,0.09,0.007,0.007

sectype,10,beam,l,,0

secoffset,cent

secdata,0.08,0.08,0.007,0.007

sectype,11,beam,l,,0

secoffset,cent

secdata,0.07,0.07,0.005,0.005

sectype,12,beam,l,,0

secoffset,cent

secdata,0.063,0.063,0.005,0.005

sectype,13,beam,l,,0

secoffset,cent

secdata,0.056,0.056,0.005,0.005

sectype,14,beam,l,,0

secoffset,cent

secdata,0.05,0.05,0.005,0.005

sectype,15,beam,l,,0

secoffset,cent

secdata,0.05,0.05,0.004,0.004

sectype,16,beam,l,,0

secoffset,cent

secdata,0.045,0.045,0.004,0.004

!定义实常数

r,1,0.002737

r,2,0.002437

r,3,0.001724

r,4,0.001926

r,5,0.001564

r,6,0.00088

r,7,0.000741

r,8,0.000688

r,9,0.000614

r,10,0.000542

r,11,0.00048

r,12,0.00039

r,13,0.000349

!塔段1建模

n,1,5.25,0,5.25

n,2,5.25,0,-5.25

n,3,-5.25,0,-5.25

n,4,-5.25,0,5.25

n,5,4.1,9.1,4.1

n,6,4.1,9.1,-4.1

n,7,-4.1,9.1,-4.1

n,8,-4.1,9.1,4.1

n,9,4.1,9.1,0

n,10,0,9.1,-4.1

n,11,-4.1,9.1,0

n,12,0,9.1,4.1

n,13,2.05,9.1,2.05

n,14,2.05,9.1,-2.05

n,15,-2.05,9.1,-2.05

n,16,-2.05,9.1,2.05

n,17,2.05,9.1,0

n,18,-2.05,9.1,0

!塔段1生成主材单元

type,1

mat,1

secnum,1

*do,i,1,4,1

 e,i,4+i

*enddo

mat,2

secnum,8

*do,i,1,4,1

 e,i,8+i

*enddo   

*do,i,1,3,1

 e,1+i,8+i

*enddo  

e,1,12

!塔段1生成横隔单元

secnum,9

*do,i,1,4,1

 e,4+i,8+i

*enddo

*do,i,1,3,1

 e,5+i,8+i

*enddo

e,5,12

secnum,11

*do,i,1,3,1

 e,8+i,13+i

*enddo

e,12,13

*do,i,1,3,1

 e,9+i,13+i

*enddo

e,9,13

secnum,12

e,13,17

e,14,17

e,15,18

e,16,18

*do,i,1,4,1

 e,4+i,12+i

*enddo

secnum,15

e,9,17

e,11,18

!塔段2建模

n,19,3.5,14.1,3.5

n,20,3.5,14.1,-3.5

n,21,-3.5,14.1,-3.5

n,22,-3.5,14.1,3.5

n,23,2.9,18.9,2.9

n,24,2.9,18.9,-2.9

n,25,-2.9,18.9,-2.9

n,26,-2.9,18.9,2.9

n,27,2.3,23.7,2.3

n,28,2.3,23.7,-2.3

n,29,-2.3,23.7,-2.3

n,30,-2.3,23.7,2.3

n,31,2.3,23.7,0

n,32,0,23.7,-2.3

n,33,-2.3,23.7,0

n,34,0,23.7,2.3

n,35,1.15,23.7,1.15

n,36,1.15,23.7,-1.15

n,37,-1.15,23.7,-1.15

n,38,-1.15,23.7,1.15

!塔段2生成主材单元

mat,1

secnum,1

*do,i,1,4,1

 e,4+i,18+i

*enddo

secnum,2

*do,i,1,4,1

 *do,j,1,5,4

 e,17+i+j,21+i+j

 *enddo

*enddo

!塔段2生成横隔单元

mat,2

secnum,12

*do,i,1,4,1

 e,26+i,30+i

*enddo

*do,i,1,3,1

 e,27+i,30+i

*enddo

e,27,34

secnum,13

*do,i,1,4,1

 e,30+i,34+i

*enddo

*do,i,1,3,1

 e,30+i,35+i

*enddo

e,34,35

secnum,14

e,35,36

e,37,38

secnum,16

*do,i,1,4,1

 e,26+i,34+i

*enddo

!塔段2生成斜材单元

type,2

real,5

e,5,22

e,8,19

e,19,26

e,22,23

e,6,21

e,7,20

e,20,25

e,21,24

e,5,20

e,6,19

e,19,24

e,20,23

e,8,21

e,7,22

e,22,25

e,21,26

real,4

e,23,30

e,26,27

e,24,29

e,25,28

e,23,28

e,24,27

e,26,29

e,25,30

!塔段3建模

n,39,1.882,27.044,1.882

n,40,1.882,27.044,-1.882

n,41,-1.882,27.044,-1.882

n,42,-1.882,27.044,1.882

n,43,1.508,30.036,1.508

n,44,1.508,30.036,-1.508

n,45,-1.508,30.036,-1.508

n,46,-1.508,30.036,1.508

n,47,1.2,32.5,1.2

n,48,1.2,32.5,-1.2

n,49,-1.2,32.5,-1.2

n,50,-1.2,32.5,1.2

n,51,1.508,30.036,0

n,52,0,30.036,-1.508

n,53,-1.508,30.036,0

n,54,0,30.036,1.508

n,55,0,30.036,0

n,56,0,32.5,0

!塔段3生成主材单元

type,1

mat,1

secnum,4

*do,i,1,4,1

 e,26+i,38+i

*enddo

*do,i,1,4,1

 *do,j,1,5,4

  e,37+i+j,41+i+j

 *enddo

*enddo

!塔段3生成横隔单元

secnum,5

*do,i,1,4,1

 e,42+i,50+i

*enddo

*do,i,1,3,1

 e,43+i,50+i

*enddo

e,43,54

mat,2

secnum,10

*do,i,1,3,1

 e,50+i,51+i

*enddo

e,51,54

secnum,13

*do,i,1,4,1

 e,50+i,55

*enddo

mat,1

secnum,3

*do,i,1,3,1

 e,46+i,47+i

*enddo

e,47,50

mat,2

secnum,13

*do,i,1,4,1

 e,46+i,56

*enddo

!塔段3生成斜材单元

type,2

real,3

e,27,42

e,30,39

e,28,41

e,29,40

e,27,40

e,28,39

e,30,41

e,29,42

real,5

e,39,46

e,42,43

e,40,45

e,41,44

e,40,43

e,39,44

e,42,45

e,41,46

mat,1

e,43,50

e,46,47

e,44,49

e,45,48

e,43,48

e,44,47

e,46,49

e,45,50

!塔段4建模

n,57,1.146,34.12,1.146

n,58,1.146,34.12,-1.146

n,59,-1.146,34.12,-1.146

n,60,-1.146,34.12,1.146

n,61,1.0965,35.605,1.0965

n,62,1.0965,35.605,-1.0965

n,63,-1.0965,35.605,-1.0965

n,64,-1.0965,35.605,1.0965

n,65,1.05,37,1.05

n,66,1.05,37,-1.05

n,67,-1.05,37,-1.05

n,68,-1.05,37,1.05

n,69,1.05,37,0

n,70,0,37,-1.05

n,71,-1.05,37,0

n,72,0,37,1.05

n,73,0,37,0

!塔段4生成主材单元

type,1

secnum,6

*do,i,1,4,1

 e,46+i,56+i

*enddo

*do,i,1,4,1

 *do,j,1,5,4

  e,55+i+j,59+i+j

 *enddo

*enddo

!塔段4生成横隔单元

secnum,7

*do,i,1,4,1

 e,64+i,68+i

*enddo

*do,i,1,3,1

 e,65+i,68+i

*enddo

e,65,72

mat,2

secnum,15

*do,i,1,3,1

 e,68+i,69+i

*enddo

e,69,72

*do,i,1,4,1

 e,68+i,73

*enddo

!塔段4生成斜材单元

type,2

real,9

e,50,57

e,47,60

e,60,61

e,57,64

e,64,65

e,61,68

e,49,58

e,48,59

e,59,62

e,58,63

e,63,66

e,62,67

e,47,58

e,48,57

e,57,62

e,58,61

e,61,66

e,62,65

e,50,59

e,49,60

e,60,63

e,59,64

e,64,67

e,63,68

!塔段5建模

n,74,0.9925,38.495,0.9925

n,75,0.9925,38.495,-0.9925

n,76,-0.9925,38.495,-0.9925

n,77,-0.9925,38.495,0.9925

n,78,0.935,39.99,0.935

n,79,0.935,39.99,-0.935

n,80,-0.935,39.99,-0.935

n,81,-0.935,39.99,0.935

n,82,0.8775,41.485,0.8775

n,83,0.8775,41.485,-0.8775

n,84,-0.8775,41.485,-0.8775

n,85,-0.8775,41.485,0.8775

n,86,0.8,43.5,0.8

n,87,0.8,43.5,-0.8

n,88,-0.8,43.5,-0.8

n,89,-0.8,43.5,0.8

n,90,0,38.495,0

n,91,0.8775,41.485,0

n,92,0,41.485,-0.8775

n,93,-0.8775,41.485,0

n,94,0,41.485,0.8775

n,95,0,43.5,0

!塔段5生成主材单元

type,1

mat,1

secnum,9

*do,i,1,4,1

 e,64+i,73+i

*enddo

*do,i,1,4,1

 *do,j,1,9,4

 e,72+i+j,76+i+j

 *enddo

*enddo

!塔段5生成横隔单元

mat,2

secnum,12

*do,i,1,3,1

 e,73+i,74+i

*enddo

e,74,77

secnum,13

*do,i,1,4,1

 e,73+i,90

*enddo

secnum,12

*do,i,1,4,1

 e,81+i,90+i

*enddo

*do,i,1,3,1

 e,82+i,90+i

*enddo

e,82,94

secnum,13

*do,i,1,3,1

 e,90+i,91+i

*enddo

e,91,94

e,92,94

secnum,11

*do,i,1,3,1

 e,85+i,86+i

*enddo

e,86,89

secnum,15

*do,i,1,4,1

 e,85+i,95

*enddo

!塔段5生成斜材单元

type,2

real,10

e,68,74

e,65,77

e,77,78

e,74,81

e,81,82

e,78,85

e,66,76

e,67,75

e,75,80

e,76,79

e,79,84

e,80,83

e,65,75

e,66,74

e,74,79

e,75,78

e,78,83

e,79,82

e,68,76

e,67,77

e,77,80

e,76,81

e,81,84

e,80,85

real,9

e,82,89

e,85,86

e,83,88

e,84,87

e,82,87

e,83,86

e,85,88

e,84,89

!塔段3横担建模

n,96,3,30.036,1.275

n,97,3,30.036,-1.275

n,98,4.5,30.036,1.05

n,99,4.5,30.036,-1.05

n,100,6,30.036,0.825

n,101,6,30.036,-0.825

n,102,7.5,30.036,0.6

n,103,7.5,30.036,-0.6

n,104,-3,30.036,1.275

n,105,-3,30.036,-1.275

n,106,-4.5,30.036,1.05

n,107,-4.5,30.036,-1.05

n,108,-6,30.036,0.825

n,109,-6,30.036,-0.825

n,110,-7.5,30.036,0.6

n,111,-7.5,30.036,-0.6

n,112,2.775,31.875,1.05

n,113,2.775,31.875,-1.05

n,114,4.35,31.25,0.9

n,115,4.35,31.25,-0.9

n,116,5.925,30.625,0.75

n,117,5.925,30.625,-0.75

n,118,-2.775,31.875,1.05

n,119,-2.775,31.875,-1.05

n,120,-4.35,31.25,0.9

n,121,-4.35,31.25,-0.9

n,122,-5.925,30.625,0.75

n,123,-5.925,30.625,-0.75

!塔段3生成横担下单元

mat,1

real,1

e,43,96

e,96,98

e,98,100

e,100,102

e,44,97

e,97,99

e,99,101

e,101,103

e,45,105

e,105,107

e,107,109

e,109,111

e,46,104

e,104,106

e,106,108

e,108,110

real,6

e,102,103

e,110,111

mat,2

real,9

e,43,97

e,44,96

e,97,98

e,96,99

e,99,100

e,98,101

e,45,104

e,46,105

e,105,106

e,104,107

e,107,108

e,106,109

real,8

e,101,102

e,100,103

e,109,110

e,108,111

!塔段3生成横担上单元

mat,1

real,2

e,47,112

e,112,114

e,114,116

e,116,102

e,48,113

e,113,115

e,115,117

e,117,103

e,49,119

e,119,121

e,121,123

e,123,111

e,50,118

e,118,120

e,120,122

e,122,110

mat,2

real,9

e,48,112

e,113,114

e,49,118

e,119,120

real,10

e,115,116

e,121,122

e,117,102

e,123,110

real,12

e,112,113

e,118,119

real,13

e,114,115

e,116,117

e,120,121

e,122,123

!塔段3生成横担侧单元

real,10

e,43,112

e,44,113

e,46,118

e,45,119

real,13

e,112,96

e,96,114

e,114,98

e,113,97

e,97,115

e,115,99

e,98,116

e,116,100

e,99,117

e,117,101

e,119,105

e,105,121

e,121,107

e,118,104

e,104,120

e,120,106

e,107,123

e,123,109

e,106,122

e,122,108

!塔段5横担建模

n,124,1.85,43.5,0.8

n,125,1.85,43.5,-0.8

n,126,2.9,43.5,0.8

n,127,2.9,43.5,-0.8

n,128,3.95,43.5,0.8

n,129,3.95,43.5,-0.8

n,130,5,43.5,0.8

n,131,5,43.5,-0.8

n,132,-1.85,43.5,0.8

n,133,-1.85,43.5,-0.8

n,134,-2.9,43.5,0.8

n,135,-2.9,43.5,-0.8

n,136,-3.95,43.5,0.8

n,137,-3.95,43.5,-0.8

n,138,-5,43.5,0.8

n,139,-5,43.5,-0.8

n,140,1.85,42,0.8

n,141,1.85,42,-0.8

n,142,2.9,42.5,0.8

n,143,2.9,42.5,-0.8

n,144,3.95,43,0.8

n,145,3.95,43,-0.8

n,146,-1.85,42,0.8

n,147,-1.85,42,-0.8

n,148,-2.9,42.5,0.8

n,149,-2.9,42.5,-0.8

n,150,-3.95,43,0.8

n,151,-3.95,43,-0.8

!塔段5生成横担下单元

mat,1

real,7

e,82,140

e,140,142

e,142,144

e,144,130

e,83,141

e,141,143

e,143,145

e,145,131

e,84,147

e,147,149

e,149,151

e,151,139

e,85,146

e,146,148

e,148,150

e,150,138

mat,2

real,10

e,82,141

e,83,140

e,140,143

e,141,142

e,85,147

e,84,146

e,146,149

e,147,148

real,12

e,142,145

e,143,144

e,144,131

e,145,130

e,148,151

e,149,150

e,150,139

e,151,138

!塔段5生成横担上单元

mat,1

real,8

e,86,124

e,124,126

e,126,128

e,128,130

e,87,125

e,125,127

e,127,129

e,129,131

e,88,133

e,133,135

e,135,137

e,137,139

e,89,132

e,132,134

e,134,136

e,136,138

mat,2

real,11

e,130,131

e,138,139

e,124,125

e,126,127

e,128,129

e,132,133

e,134,135

e,136,137

e,87,124

e,125,126

e,127,128

e,129,130

e,88,132

e,133,134

e,135,136

e,137,138

!塔段5生成横担侧单元

real,13

e,86,140

e,140,124

e,124,142

e,142,126

e,126,144

e,144,128

e,87,141

e,141,125

e,125,143

e,143,127

e,127,145

e,145,129

e,89,146

e,146,132

e,132,148

e,148,134

e,134,150

e,150,136

e,88,147

e,147,133

e,133,149

e,149,135

e,135,151

e,151,137