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Plate deflection wrong in staad pro

 
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atulsharma2595
SEFI Member
SEFI Member


Joined: 19 Jan 2022
Posts: 4

PostPosted: Tue Oct 11, 2022 6:51 pm    Post subject: Plate deflection wrong in staad pro Reply with quote

staad model

STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 11-Oct-22
END JOB INFORMATION
INPUT WIDTH 79
UNIT METER KN
JOINT COORDINATES
1 0 0 0; 2 2 0 0; 3 2 0 1; 4 0 0 1; 5 0.2 0 0; 6 0.2 0 0.1; 7 0 0 0.1;
8 0.4 0 0; 9 0.4 0 0.1; 10 0.6 0 0; 11 0.6 0 0.1; 12 0.8 0 0; 13 0.8 0 0.1;
14 1 0 0; 15 1 0 0.1; 16 1.2 0 0; 17 1.2 0 0.1; 18 1.4 0 0; 19 1.4 0 0.1;
20 1.6 0 0; 21 1.6 0 0.1; 22 1.8 0 0; 23 1.8 0 0.1; 24 2 0 0.1; 25 0.2 0 0.2;
26 0 0 0.2; 27 0.4 0 0.2; 28 0.6 0 0.2; 29 0.8 0 0.2; 30 1 0 0.2; 31 1.2 0 0.2;
32 1.4 0 0.2; 33 1.6 0 0.2; 34 1.8 0 0.2; 35 2 0 0.2; 36 0.2 0 0.3; 37 0 0 0.3;
38 0.4 0 0.3; 39 0.6 0 0.3; 40 0.8 0 0.3; 41 1 0 0.3; 42 1.2 0 0.3;
43 1.4 0 0.3; 44 1.6 0 0.3; 45 1.8 0 0.3; 46 2 0 0.3; 47 0.2 0 0.4; 48 0 0 0.4;
49 0.4 0 0.4; 50 0.6 0 0.4; 51 0.8 0 0.4; 52 1 0 0.4; 53 1.2 0 0.4;
54 1.4 0 0.4; 55 1.6 0 0.4; 56 1.8 0 0.4; 57 2 0 0.4; 58 0.2 0 0.5; 59 0 0 0.5;
60 0.4 0 0.5; 61 0.6 0 0.5; 62 0.8 0 0.5; 63 1 0 0.5; 64 1.2 0 0.5;
65 1.4 0 0.5; 66 1.6 0 0.5; 67 1.8 0 0.5; 68 2 0 0.5; 69 0.2 0 0.6; 70 0 0 0.6;
71 0.4 0 0.6; 72 0.6 0 0.6; 73 0.8 0 0.6; 74 1 0 0.6; 75 1.2 0 0.6;
76 1.4 0 0.6; 77 1.6 0 0.6; 78 1.8 0 0.6; 79 2 0 0.6; 80 0.2 0 0.7; 81 0 0 0.7;
82 0.4 0 0.7; 83 0.6 0 0.7; 84 0.8 0 0.7; 85 1 0 0.7; 86 1.2 0 0.7;
87 1.4 0 0.7; 88 1.6 0 0.7; 89 1.8 0 0.7; 90 2 0 0.7; 91 0.2 0 0.8; 92 0 0 0.8;
93 0.4 0 0.8; 94 0.6 0 0.8; 95 0.8 0 0.8; 96 1 0 0.8; 97 1.2 0 0.8;
98 1.4 0 0.8; 99 1.6 0 0.8; 100 1.8 0 0.8; 101 2 0 0.8; 102 0.2 0 0.9;
103 0 0 0.9; 104 0.4 0 0.9; 105 0.6 0 0.9; 106 0.8 0 0.9; 107 1 0 0.9;
108 1.2 0 0.9; 109 1.4 0 0.9; 110 1.6 0 0.9; 111 1.8 0 0.9; 112 2 0 0.9;
113 0.2 0 1; 114 0.4 0 1; 115 0.6 0 1; 116 0.8 0 1; 117 1 0 1; 118 1.2 0 1;
119 1.4 0 1; 120 1.6 0 1; 121 1.8 0 1;
ELEMENT INCIDENCES SHELL
6 1 5 6 7; 7 5 8 9 6; 8 8 10 11 9; 9 10 12 13 11; 10 12 14 15 13;
11 14 16 17 15; 12 16 18 19 17; 13 18 20 21 19; 14 20 22 23 21; 15 22 2 24 23;
16 7 6 25 26; 17 6 9 27 25; 18 9 11 28 27; 19 11 13 29 28; 20 13 15 30 29;
21 15 17 31 30; 22 17 19 32 31; 23 19 21 33 32; 24 21 23 34 33; 25 23 24 35 34;
26 26 25 36 37; 27 25 27 38 36; 28 27 28 39 38; 29 28 29 40 39; 30 29 30 41 40;
31 30 31 42 41; 32 31 32 43 42; 33 32 33 44 43; 34 33 34 45 44; 35 34 35 46 45;
36 37 36 47 48; 37 36 38 49 47; 38 38 39 50 49; 39 39 40 51 50; 40 40 41 52 51;
41 41 42 53 52; 42 42 43 54 53; 43 43 44 55 54; 44 44 45 56 55; 45 45 46 57 56;
46 48 47 58 59; 47 47 49 60 58; 48 49 50 61 60; 49 50 51 62 61; 50 51 52 63 62;
51 52 53 64 63; 52 53 54 65 64; 53 54 55 66 65; 54 55 56 67 66; 55 56 57 68 67;
56 59 58 69 70; 57 58 60 71 69; 58 60 61 72 71; 59 61 62 73 72; 60 62 63 74 73;
61 63 64 75 74; 62 64 65 76 75; 63 65 66 77 76; 64 66 67 78 77; 65 67 68 79 78;
66 70 69 80 81; 67 69 71 82 80; 68 71 72 83 82; 69 72 73 84 83; 70 73 74 85 84;
71 74 75 86 85; 72 75 76 87 86; 73 76 77 88 87; 74 77 78 89 88; 75 78 79 90 89;
76 81 80 91 92; 77 80 82 93 91; 78 82 83 94 93; 79 83 84 95 94; 80 84 85 96 95;
81 85 86 97 96; 82 86 87 98 97; 83 87 88 99 98; 84 88 89 100 99;
85 89 90 101 100; 86 92 91 102 103; 87 91 93 104 102; 88 93 94 105 104;
89 94 95 106 105; 90 95 96 107 106; 91 96 97 108 107; 92 97 98 109 108;
93 98 99 110 109; 94 99 100 111 110; 95 100 101 112 111; 96 103 102 113 4;
97 102 104 114 113; 98 104 105 115 114; 99 105 106 116 115;
100 106 107 117 116; 101 107 108 118 117; 102 108 109 119 118;
103 109 110 120 119; 104 110 111 121 120; 105 111 112 3 121;
ELEMENT PROPERTY
6 TO 105 THICKNESS 0.01
DEFINE MATERIAL START
ISOTROPIC CONCRETE
E 2.49185e+007
POISSON 0.17
DENSITY 25
ALPHA 1e-005
DAMP 0.05
TYPE CONCRETE
STRENGTH FCU 25000
END DEFINE MATERIAL
CONSTANTS
MATERIAL CONCRETE ALL
SUPPORTS
1 4 PINNED
2 3 FIXED BUT FX FZ MX MY MZ
LOAD 1 LOADTYPE Dead  TITLE LOAD CASE 1
SELFWEIGHT Y -1 LIST ALL
PERFORM ANALYSIS PRINT ALL
FINISH


hand calculation ans ETABS both give 1mm approx but staad showing 26mm approx at center.

for 1*1  5*5  5*10 etc model also very incorrect results ranging upto 1000% error even.

references Timoshenko_-_Theory_of_plates_and_shells
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