波浪荷载作用下海洋平台随机分析

《ANSYS.结构有限元高级分析方法与范例应用（第一版）》第14章海洋平台结构的动力分析中谐响应分析、冰荷载作用下海洋平台结构响应分析模型没有加约束，造成分析错误，本人提供完整的模型命令流如下，按此命令流和书中的分析及后处理可以得到书中的分析效果。

模型如下：

FINISH

/CLEAR

/FILENAME,PLATFORM

/TITLE, PLATFORM-STUDY

/PREP7

!定义单元类型

ET,1,PIPE16

ET,2,BEAM4

ET,3,SHELL63

!定义实常数

R,1,1.2,0.03

R,2,0.8,0.02

R,3,0.5,0.02

R,4,0.3,0.02

R,5,0.06,0.0002,0.00045,0.3,0.2

R,6,0.02,0.02,0.02,0.02

!定义BEAM4单元截面

SECTYPE,1,BEAM,RECT,,0

SECOFFSET,USER,,-0.1

SECDATA,0.2,0.3,0,0,0,0,0,0,0,0

!定义材料参数

MP,EX,1,2.0E11

MP,NUXY,1,0.3

MP,DENS,1,7800

!导管架的关键点

K,1,-10,-7.5,0

K,2,0,-9.5,0

K,3,10,-7.5,0

K,4,10,7.5,0

K,5,0,9.5,0

K,6,-10,7.5,0

K,7,-10,0,0

K,8,-5.588,0,0

K,9,0,0,0

K,10,5.588,0,0

K,11,10,0,0

K,12,-9.454,-3.438,10.91

K,13,-9.454,3.438,10.91

K,14,0,-4.313,11.01

K,15,0,4.313,11.01

K,16,9.454,-3.438,10.91

K,17,9.454,3.438,10.91

K,18,-4.75,-7.75,10.53

K,19,4.75,-7.75,10.53

K,20,-4.75,7.75,10.53

K,32,4.75,7.75,10.53

K,21,-9,-6.25,20

K,22,0,-7.75,20

K,23,9,-6.25,20

K,24,9,6.25,20

K,25,0,7.75,20

K,26,-9,6.25,20

K,27,-9,0,20

K,28,-4.982,0,20

K,29,0,0,20

K,30,4.982,0,20

K,31,9,0,20

K,41,-8,-5,40

K,42,0,-6,40

K,43,8,-5,40

K,44,8,5,40

K,45,0,6,40

K,46,-8,5,40

K,47,-8,0,40

K,48,-4.364,0,40

K,49,0,0,40

K,50,4.364,0,40

K,51,8,0,40

K,61,-7,-3.75,60

K,62,0,-4.25,60

K,63,7,-3.75,60

K,64,7,3.75,60

K,65,0,4.25,60

K,66,-7,3.75,60

K,68,-3.720,0,60

K,70,3.720,0,60

K,81,-6,-2.5,80

K,82,0,-2.5,80

K,83,6,-2.5,80

K,84,6,2.5,80

K,85,0,2.5,80

K,86,-6,2.5,80

K,88,-3,0,80

K,90,3,0,80

!基础约束关键点

K,71,-10.1,-7.625,-2

K,72,0,-9.675,-2

K,73,10.1,-7.625,-2

K,74,10.1,7.625,-2

K,75,0,9.675,-2

K,76,-10.1,7.625,-2

!导管架－甲板连接处关键点

K,91,-6,-2.5,82

K,92,0,-2.5,82

K,93,6,-2.5,82

K,94,6,2.5,82

K,95,0,2.5,82

K,96,-6,2.5,82

!甲板部分关键点

K,101,-6,-2.5,90

K,102,0,-2.5,90

K,103,6,-2.5,90

K,104,6,2.5,90

K,105,0,2.5,90

K,106,-6,2.5,90

K,107,-8,-4.5,90

K,108,-6,-4.5,90

K,109,0,-4.5,90

K,110,6,-4.5,90

K,111,8,-4.5,90

K,112,-8,0,90

K,113,-6,0,90

K,114,0,0,90

K,115,6,0,90

K,116,8,0,90

K,117,-8,-2.5,90

K,118,8,-2.5,90

K,119,-8,2.5,90

K,120,8,2.5,90

K,121,-8,4.5,90

K,122,-6,4.5,90

K,123,0,4.5,90

K,124,6,4.5,90

K,125,8,4.5,90

K,151,-6,-2.5,98

K,152,0,-2.5,98

K,153,6,-2.5,98

K,154,6,2.5,98

K,155,0,2.5,98

K,156,-6,2.5,98

K,157,-9,-5.5,98

K,158,-6,-5.5,98

K,159,0,-5.5,98

K,160,6,-5.5,98

K,161,9,-5.5,98

K,162,-9,0,98

K,163,-6,0,98

K,164,0,0,98

K,165,6,0,98

K,166,9,0,98

K,167,-9,-2.5,98

K,168,9,-2.5,98

K,169,-9,2.5,98

K,170,9,2.5,98

K,171,-9,5.5,98

K,172,-6,5.5,98

K,173,0,5.5,98

K,174,6,5.5,98

K,175,9,5.5,98

!结构框架连线

L,1,2
!平面

L,2,3

L,3,11

L,11,4

L,4,5

L,5,6

L,6,7

L,7,1

L,9,2

L,9,5

L,8,1

L,8,2

L,8,9

L,8,5

L,8,6

L,8,7

L,10,2

L,10,3

L,10,11

L,10,4

L,10,5

L,10,9

L,21,22

L,22,23

L,23,31

L,31,24

L,24,25

L,25,26

L,26,27

L,27,21

L,29,22

L,29,25

L,28,21

L,28,22

L,28,29

L,28,25

L,28,26

L,28,27

L,30,22

L,30,23

L,30,31

L,30,24

L,30,25

L,30,29

L,41,42

L,42,43

L,43,51

L,51,44

L,44,45

L,45,46

L,46,47

L,47,41

L,49,42

L,49,45

L,48,41

L,48,42

L,48,49

L,48,45

L,48,46

L,50,42

L,50,43

L,50,44

L,50,45

L,50,49

L,61,62

L,62,63

L,63,64

L,64,65

L,65,66

L,66,61

L,62,65

L,68,61

L,68,62

L,68,65

L,68,66

L,70,62

L,70,63

L,70,64

L,70,65

L,81,82

L,82,83

L,83,84

L,84,85

L,85,86

L,86,81

L,82,85

L,88,81

L,88,82

L,88,85

L,88,86

L,90,82

L,90,83

L,90,84

L,90,85

L,1,21
!侧面

L,21,41

L,41,61

L,61,81

L,6,26

L,26,46

L,46,66

L,66,86

L,13,6

L,13,7

L,13,27

L,13,26

L,12,7

L,12,1

L,12,21

L,12,27

L,7,27

L,27,47

L,26,47

L,21,47

L,47,66

L,47,61

L,61,86

L,2,22

L,22,42

L,42,62

L,62,82

L,5,25

L,25,45

L,45,65

L,65,85

L,15,5

L,15,9

L,15,29

L,15,25

L,9,29

L,14,9

L,14,2

L,14,22

L,14,29

L,29,49

L,25,49

L,22,49

L,49,65

L,49,62

L,62,85

L,3,23

L,23,43

L,43,63

L,63,83

L,4,24

L,24,44

L,44,64

L,64,84

L,17,4

L,17,11

L,17,31

L,17,24

L,11,31

L,16,11

L,16,3

L,16,23

L,16,31

L,31,51

L,24,51

L,23,51

L,51,64

L,51,63

L,63,84

L,18,1
!立面

L,18,2

L,18,22

L,18,21

L,19,2

L,19,3

L,19,23

L,19,22

L,21,42

L,23,42

L,42,61

L,42,63

L,62,81

L,62,83

L,20,6

L,20,5

L,20,25

L,20,26

L,32,5

L,32,4

L,32,24

L,32,25

L,26,45

L,24,45

L,45,66

L,45,64

L,65,86

L,65,84

L,1,71
!桩基础连线

L,2,72

L,3,73

L,4,74

L,5,75

L,6,76

L,81,91
!导管架—甲板连接处连线

L,82,92

L,83,93

L,84,94

L,85,95

L,86,96

L,101,102
!甲板平面

L,102,103

L,103,115

L,115,104

L,104,105

L,105,106

L,106,113

L,113,101

L,107,108

L,108,109

L,109,110

L,110,111

L,112,113

L,113,114

L,114,115

L,115,116

L,117,101

L,103,118

L,119,106

L,104,120

L,121,122

L,122,123

L,123,124

L,124,125

L,107,117

L,117,112

L,112,119

L,119,121

L,108,101

L,106,122

L,109,102

L,102,114

L,114,105

L,105,123

L,110,103

L,104,124

L,111,118

L,118,116

L,116,120

L,120,125

L,151,152

L,152,153

L,153,165

L,165,154

L,154,155

L,155,156

L,156,163

L,163,151

L,157,158

L,158,159

L,159,160

L,160,161

L,162,163

L,163,164

L,164,165

L,165,166

L,167,151

L,153,168

L,169,156

L,154,170

L,171,172

L,172,173

L,173,174

L,174,175

L,157,167

L,167,162

L,162,169

L,169,171

L,158,151

L,156,172

L,159,152

L,152,164

L,164,155

L,155,173

L,160,153

L,154,174

L,161,168

L,168,166

L,166,170

L,170,175

L,91,101
!甲板撑杆

L,101,151

L,92,102

L,102,152

L,93,103

L,103,153

L,94,104

L,104,154

L,95,105

L,105,155

L,96,106

L,106,156

L,91,102

L,102,93

L,94,105

L,105,96

L,91,106

L,95,102

L,93,104

L,151,102

L,102,153

L,154,105

L,105,156

L,106,151

L,104,153

L,102,155

!甲板面

A,107,108,101,117

A,108,109,102,101

A,109,110,103,102

A,110,111,118,103

A,117,101,113,112

A,101,102,114,113

A,102,103,115,114

A,103,118,116,115

A,112,113,106,119

A,113,114,105,106

A,114,115,104,105

A,115,116,120,104

A,119,106,122,121

A,106,105,123,122

A,105,104,124,123

A,104,120,125,124

A,157,158,151,167

A,158,159,152,151

A,159,160,153,152

A,160,161,168,153

A,167,151,163,162

A,151,152,164,163

A,152,153,165,164

A,153,168,166,165

A,162,163,156,169

A,163,164,155,156

A,164,165,154,155

A,165,166,170,154

A,169,156,172,171

A,156,155,173,172

A,155,154,174,173

A,154,170,175,174

!框架网格划分

LSEL,S,,,95,102

LSEL,A,,,118,125

LSEL,A,,,141,148

LSEL,A,,,192,203

LATT,1,1,1

LESIZE,ALL,,,1

LMESH,ALL

LSEL,S,,,1,94

LSEL,A,,,103,117

LSEL,A,,,126,140

LSEL,A,,,149,191

LATT,1,3,1

LESIZE,ALL,,,1

LMESH,ALL

LSEL,S,,,284,295

LATT,1,2,1

LESIZE,ALL,,,1

LMESH,ALL

LSEL,S,,,296,319

LATT,1,4,1

LESIZE,ALL,,,1

LMESH,ALL

!甲板梁网格划分

LSEL,S,,,192,283

LATT,1,5,2,,,,1

LESIZE,ALL,,,3

LMESH,ALL

!甲板面网格划分

ASEL,A,,,ALL

AATT,1,6,3

AMESH,ALL

D,31,ALL

D,32,ALL

D,33,ALL

D,34,ALL

D,35,ALL

D,36,ALL

allsel,all

fini

但波浪荷载作用下海洋平台随机分析中的错误，我只找出一部分，大家看看错误在哪里，按上面模型+下面的分析。

!谱分析求解

/SOLU

ANTYPE,SPECTRUM

SPOPT,PSD,4,0

PSDUNIT,1,FORC,386.4,

PSDFRQ,1, ,0.0001,0.0318,0.0478,0.064,0.0796

PSDFRQ,1, ,0.0955,0.1146,0.1274,0.1592,0.1911

PSDFRQ,1, ,0.2229,0.2548,0.3185,0.4777,0.7962

PSDFRQ,1, ,1.5924,5, , ,

PSDVAL,1,0.001,0.167,0.868,0.02e10,0.124e10

PSDVAL,1,2.319e10,2.533e10,1.66e10,0.89e10,0.503e10

PSDVAL,1,0.129e10,0.074e10,0.034e10,0.019e10,0.008e10

PSDVAL,1,0.006e10,0.006e10, , ,

F,5,FY,1,

F,25,FY,1,

PFACT,1,NODE,  

!当输入PFACT,1,NODE,
后出现错误

PSDRES,DISP,ABS

PSDRES,VELO,ABS

PSDRES,ACEL,ABS

solve

FINISH

/SOLUTION

ANTYPE,SPECTRUM

PSDCOM,0.001,6,

solve

fini

/post26

stor,psd,1

nsol,2,73,u,y,uy

psd,3,2,,1,1,s-uy

/axlab,x,frequency

/axlab,y,s-uy

plvar,3,

FINISH