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Finite Element Analysis in Structural Mechanics

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Table of Contents

Semi-loofs, BEAM61S1

Problem

Mesh

element type nodes
1 61 1 2 4 3 11 13 14 12 
2 61 3 4 6 5 14 16 17 15
3 61 5 6 8 7 17 19 20 18
4 61 7 8 10 9 20 22 23 21

Boundary conditions

$u=v=w=0$ at node 1
$u=w=0$ at node 2
$u=w=\alpha=\beta=0$ at node 11

Computation

The end force is replaced with the equivalent edge traction $$\begin{align} l_x&=\frac{20000}{0.02}=1000\times10^3\text{ N/m}, \\ l_y&=-10^3\text{ N/m}, \\ l_z&=0.5\times10^3\text{ N/m}. \end{align}$$ The distributed loading in $y$ direction is transformed to the local coordinate systems of the elements' edges L2 that coincide with the line $y=0.02,$ $z=0.$ Thus we have $$l_{xh}|_\text{L2}=l_y=-100\text{ N/m}$$ for elements 1 to 4.

The distributed loading in $z$ direction is replaced with the normal surface traction $$q_n|_\text{S1}=-\frac{l_z}{0.02}=-0.01\times10^6\text{ Pa}$$ acting on the semi-loof's face S1 only.

The computation is executed with the following commands:

beam61s1.bat
rmd3 beam61s1.i1
rpd3 beam61s1.i2
srh3 beam61s1.i3
fefs beam61s1.i4
str3 beam61s1.i5

Input

beam61s1.i1
;  NELEM NNOD ITED
IP   4    23   61
;  CRIT SCALE THDEF
RP 1.01   1    0.01
XY N 1:10 X 2*0 2*0.25 2*0.5 2*0.75 2*1
          Y 5*(0 0.02)
          Z 10*0
EL E 1:4 N =A 1 2 4 3 =A =B 11 13 14 12 =B
           =2A =3B =4A =6B =6A =9B
EN
EN
beam61s1.i2
;  KREST
IP   1
         ; E    α ν   ρ
MP 1 T 1 V 2e11 0 0.3 0
LV 1 T 9 V 1000e3 -1e3 0 ; Fx = 20000 N, Fy = -20 N, Fz =  0 N
LV 2 T 9 V 0 0 0.5e3     ; Fx =     0 N, Fy =   0 N, Fz = 10 N
LV 3 T 6 V -100          ; ly = -100 N/m
SV 1 T 6 V -0.01e6       ; lz =  200 N/m

AS 1 /M 1
  /B 0           N 1
  /B 0 C 1 3     N 2
  /B 0 C 1 2 4 5 N 11
  ; in-plane loading ly, Fx, Fy
  /L 1 E 4   L3
  /L 3 E 1:4 L2

AS 2
  ; three-dimensional loading ly, lz, Fx, Fy, Fz
  /L 1 E 4   L3
  /L 2 E 4   L3
  /L 3 E 1:4 L2
  /S 1 E 1:4 S1

EN
EN
beam61s1.i3
;  KREST
IP   1
EN
EN
beam61s1.i4
;  KREST
IP   1
EN
EN
beam61s1.i5
;  KLC 0 KOUT ILC  ...  KPROB KGRAF
IP  1  0   1   0   6*0    0     2
EN
EN

Output

beam61s1.o5
;  KLC 0 KOUT ILC  ...  KPROB KGRAF                                             
IP  1  0   1   0   6*0    0     2                                               
EN                                                                              
EN                                                                              
                                                      1TH LOAD CASE

                                                    DISPLACEMENTS
           NODE             U                V                W             ALPHA            BETA             GAMMA
                           [m]              [m]              [m]           [rad]            [rad]            [rad]

              1       0.0000000E+00    0.0000000E+00    0.0000000E+00
              2       0.0000000E+00   -0.1767590E-05    0.0000000E+00
              3       0.1880983E-04   -0.1331416E-02    0.0000000E+00
              4       0.2302284E-03   -0.1334231E-02    0.0000000E+00
              5       0.8322892E-04   -0.4738301E-02    0.0000000E+00
              6       0.4156647E-03   -0.4741274E-02    0.0000000E+00
              7       0.1803843E-03   -0.9247236E-02    0.0000000E+00
              8       0.5684913E-03   -0.9250232E-02    0.0000000E+00
              9       0.2985709E-03   -0.1418682E-01    0.0000000E+00
             10       0.7003044E-03   -0.1418982E-01    0.0000000E+00
             11       0.0000000E+00    0.0000000E+00    0.0000000E+00    0.0000000E+00    0.0000000E+00
             12       0.8367713E-05   -0.3349822E-03    0.0000000E+00    0.0000000E+00    0.0000000E+00
             13       0.1151700E-03   -0.3381439E-03    0.0000000E+00    0.0000000E+00    0.0000000E+00
             14       0.1245174E-03   -0.1332362E-02    0.0000000E+00    0.0000000E+00    0.0000000E+00
             15       0.5054521E-04   -0.2845755E-02    0.0000000E+00    0.0000000E+00    0.0000000E+00
             16       0.3232725E-03   -0.2848779E-02    0.0000000E+00    0.0000000E+00    0.0000000E+00
             17       0.2494470E-03   -0.4739527E-02    0.0000000E+00    0.0000000E+00    0.0000000E+00
             18       0.1315113E-03   -0.6905823E-02    0.0000000E+00    0.0000000E+00    0.0000000E+00
             19       0.4923510E-03   -0.6908827E-02    0.0000000E+00    0.0000000E+00    0.0000000E+00
             20       0.3744377E-03   -0.9248648E-02    0.0000000E+00    0.0000000E+00    0.0000000E+00
             21       0.2393201E-03   -0.1169579E-01    0.0000000E+00    0.0000000E+00    0.0000000E+00
             22       0.6345525E-03   -0.1169879E-01    0.0000000E+00    0.0000000E+00    0.0000000E+00
             23       0.4994377E-03   -0.1418830E-01    0.0000000E+00    0.0000000E+00    0.0000000E+00

                                                       REACTIONS
           NODE             RX               RY               RZ            RALPHA           RBETA            RGAMMA
                           [N]              [N]              [N]            [Nm]             [Nm]             [Nm]

              1      -0.1091564E+03   -0.7597486E+04    0.0000000E+00
              2      -0.7109156E+04    0.0000000E+00    0.0000000E+00
             11      -0.1278169E+05    0.7717486E+04    0.0000000E+00    0.0000000E+00    0.0000000E+00



                                                 EQUILIBRIUM OF FORCES AND REACTIONS

                                                 SUM OF FORCES [N]             SUM OF REACTIONS [N]


                         DIRECTION X:                       20000.00                     -20000.00
                         DIRECTION Y:                        -120.00                        120.00
                         DIRECTION Z:                           0.00                          0.00




                                                   STRESSES AT GAUSSPOINTS



   IE    IP      XG          YG          ZG     ERROR   X1        X2        X3       SIGX      SIGY      TAUZ      SIGRED
                [m]         [m]         [m]       [%]                               [MPa]     [MPa]     [MPa]       [MPa]

    1                                             0.0
          1  0.5283E-01  0.4226E-02 -0.5000E-02       -0.00      1.00      0.00      8.18     51.75     -0.31       48.19
             0.5283E-01  0.4226E-02  0.5000E-02       -0.00      1.00      0.00      8.18     51.75     -0.31       48.19
          2  0.5283E-01  0.1577E-01 -0.5000E-02        0.00      1.00      0.00      0.43    148.25     -0.84      148.04
             0.5283E-01  0.1577E-01  0.5000E-02        0.00      1.00      0.00      0.43    148.25     -0.84      148.04
          3  0.1972E+00  0.4226E-02 -0.5000E-02       -0.00      1.00      0.00     -3.67     51.18     -0.60       53.12
             0.1972E+00  0.4226E-02  0.5000E-02       -0.00      1.00      0.00     -3.67     51.18     -0.60       53.12
          4  0.1972E+00  0.1577E-01 -0.5000E-02       -0.00      1.00      0.00      0.19    148.82     -0.40      148.73
             0.1972E+00  0.1577E-01  0.5000E-02       -0.00      1.00      0.00      0.19    148.82     -0.40      148.73

    2                                             0.0
          1  0.3028E+00  0.4226E-02 -0.5000E-02       -0.00      1.00      0.00      1.92     72.01     -0.42       71.07
             0.3028E+00  0.4226E-02  0.5000E-02       -0.00      1.00      0.00      1.92     72.01     -0.42       71.07
          2  0.3028E+00  0.1577E-01 -0.5000E-02        0.00      1.00      0.00     -0.63    127.99     -0.48      128.31
             0.3028E+00  0.1577E-01  0.5000E-02        0.00      1.00      0.00     -0.63    127.99     -0.48      128.31
          3  0.4472E+00  0.4226E-02 -0.5000E-02       -0.00      1.00      0.00     -1.66     72.06     -0.39       72.91
             0.4472E+00  0.4226E-02  0.5000E-02       -0.00      1.00      0.00     -1.66     72.06     -0.39       72.91
          4  0.4472E+00  0.1577E-01 -0.5000E-02       -0.00      1.00      0.00      1.12    127.94     -0.36      127.38
             0.4472E+00  0.1577E-01  0.5000E-02       -0.00      1.00      0.00      1.12    127.94     -0.36      127.38

    3                                             0.0
          1  0.5528E+00  0.4226E-02 -0.5000E-02       -0.00      1.00      0.00      1.42     87.24     -0.32       86.54
             0.5528E+00  0.4226E-02  0.5000E-02       -0.00      1.00      0.00      1.42     87.24     -0.32       86.54
          2  0.5528E+00  0.1577E-01 -0.5000E-02        0.00      1.00      0.00     -1.24    112.76     -0.33      113.39
             0.5528E+00  0.1577E-01  0.5000E-02        0.00      1.00      0.00     -1.24    112.76     -0.33      113.39
          3  0.6972E+00  0.4226E-02 -0.5000E-02       -0.00      1.00      0.00     -1.06     87.14     -0.25       87.68
             0.6972E+00  0.4226E-02  0.5000E-02       -0.00      1.00      0.00     -1.06     87.14     -0.25       87.68
          4  0.6972E+00  0.1577E-01 -0.5000E-02       -0.00      1.00      0.00      0.97    112.86     -0.25      112.38
             0.6972E+00  0.1577E-01  0.5000E-02       -0.00      1.00      0.00      0.97    112.86     -0.25      112.38

    4                                             0.0
          1  0.8028E+00  0.4226E-02 -0.5000E-02       -0.00      1.00      0.00      0.73     96.90     -0.20       96.54
             0.8028E+00  0.4226E-02  0.5000E-02       -0.00      1.00      0.00      0.73     96.90     -0.20       96.54
          2  0.8028E+00  0.1577E-01 -0.5000E-02        0.00      1.00      0.00     -0.71    103.10     -0.20      103.46
             0.8028E+00  0.1577E-01  0.5000E-02        0.00      1.00      0.00     -0.71    103.10     -0.20      103.46
          3  0.9472E+00  0.4226E-02 -0.5000E-02       -0.00      1.00      0.00     -0.20     96.96     -0.13       97.06
             0.9472E+00  0.4226E-02  0.5000E-02       -0.00      1.00      0.00     -0.20     96.96     -0.13       97.06
          4  0.9472E+00  0.1577E-01 -0.5000E-02       -0.00      1.00      0.00      0.18    103.04     -0.13      102.95
             0.9472E+00  0.1577E-01  0.5000E-02       -0.00      1.00      0.00      0.18    103.04     -0.13      102.95
                                                      2TH LOAD CASE

                                                    DISPLACEMENTS
           NODE             U                V                W             ALPHA            BETA             GAMMA
                           [m]              [m]              [m]           [rad]            [rad]            [rad]

              1       0.0000000E+00    0.0000000E+00    0.0000000E+00
              2       0.0000000E+00   -0.1767590E-05    0.0000000E+00
              3       0.1880983E-04   -0.1331416E-02    0.8771865E-02
              4       0.2302284E-03   -0.1334231E-02    0.8771865E-02
              5       0.8322892E-04   -0.4738301E-02    0.2969195E-01
              6       0.4156647E-03   -0.4741274E-02    0.2969195E-01
              7       0.1803843E-03   -0.9247236E-02    0.5643215E-01
              8       0.5684913E-03   -0.9250232E-02    0.5643215E-01
              9       0.2985709E-03   -0.1418682E-01    0.8500809E-01
             10       0.7003044E-03   -0.1418982E-01    0.8500809E-01
             11       0.0000000E+00    0.0000000E+00    0.4925822E-05    0.0000000E+00    0.0000000E+00
             12       0.8367713E-05   -0.3349822E-03    0.2374474E-02    0.8936692E-03    0.6525084E-03
             13       0.1151700E-03   -0.3381439E-03    0.2374474E-02   -0.8936692E-03   -0.6525084E-03
             14       0.1245174E-03   -0.1332362E-02    0.8774679E-02   -0.6437942E-01   -0.6437942E-01
             15       0.5054521E-04   -0.2845755E-02    0.1815809E-01    0.5001449E-03    0.3249778E-03
             16       0.3232725E-03   -0.2848779E-02    0.1815809E-01   -0.5001449E-03   -0.3249778E-03
             17       0.2494470E-03   -0.4739527E-02    0.2969325E-01   -0.9875488E-01   -0.9875488E-01
             18       0.1315113E-03   -0.6905823E-02    0.4263275E-01    0.2202495E-03    0.1099227E-03
             19       0.4923510E-03   -0.6908827E-02    0.4263275E-01   -0.2202495E-03   -0.1099227E-03
             20       0.3744377E-03   -0.9248648E-02    0.5643249E-01   -0.1125055E+00   -0.1125055E+00
             21       0.2393201E-03   -0.1169579E-01    0.7064238E-01    0.5279840E-04    0.7409074E-05
             22       0.6345525E-03   -0.1169879E-01    0.7064238E-01   -0.5279840E-04   -0.7409069E-05
             23       0.4994377E-03   -0.1418830E-01    0.8500804E-01   -0.1150063E+00   -0.1150063E+00

                                                       REACTIONS
           NODE             RX               RY               RZ            RALPHA           RBETA            RGAMMA
                           [N]              [N]              [N]            [Nm]             [Nm]             [Nm]

              1      -0.1091564E+03   -0.7597486E+04   -0.1050000E+03
              2      -0.7109156E+04    0.0000000E+00   -0.1050000E+03
             11      -0.1278169E+05    0.7717486E+04    0.0000000E+00    0.5500000E+02    0.5500000E+02



                                                 EQUILIBRIUM OF FORCES AND REACTIONS

                                                 SUM OF FORCES [N]             SUM OF REACTIONS [N]


                         DIRECTION X:                       20000.00                     -20000.00
                         DIRECTION Y:                        -120.00                        120.00
                         DIRECTION Z:                         210.00                       -210.00




                                                   STRESSES AT GAUSSPOINTS



   IE    IP      XG          YG          ZG     ERROR   X1        X2        X3       SIGX      SIGY      TAUZ      SIGRED
                [m]         [m]         [m]       [%]                               [MPa]     [MPa]     [MPa]       [MPa]

    1                                             0.0
          1  0.5283E-01  0.4226E-02 -0.5000E-02       -0.00      1.00      0.00      8.08    349.32     -1.30      345.35
             0.5283E-01  0.4226E-02  0.5000E-02       -0.00      1.00      0.00      8.28   -245.81      0.69      250.05
          2  0.5283E-01  0.1577E-01 -0.5000E-02        0.00      1.00      0.00      0.33    445.81      0.16      445.64
             0.5283E-01  0.1577E-01  0.5000E-02        0.00      1.00      0.00      0.53   -149.32     -1.84      149.62
          3  0.1972E+00  0.4226E-02 -0.5000E-02       -0.00      1.00      0.00     -3.69    268.62     -1.10      270.49
             0.1972E+00  0.4226E-02  0.5000E-02       -0.00      1.00      0.00     -3.65   -166.26     -0.10      164.47
          4  0.1972E+00  0.1577E-01 -0.5000E-02       -0.00      1.00      0.00      0.18    366.26      0.10      366.17
             0.1972E+00  0.1577E-01  0.5000E-02       -0.00      1.00      0.00      0.21    -68.62     -0.91       68.74

    2                                             0.0
          1  0.3028E+00  0.4226E-02 -0.5000E-02       -0.00      1.00      0.00      1.92    238.74     -1.21      237.79
             0.3028E+00  0.4226E-02  0.5000E-02       -0.00      1.00      0.00      1.92    -94.72      0.37       95.70
          2  0.3028E+00  0.1577E-01 -0.5000E-02        0.00      1.00      0.00     -0.62    294.72      0.31      295.03
             0.3028E+00  0.1577E-01  0.5000E-02        0.00      1.00      0.00     -0.63    -38.74     -1.26       38.49
          3  0.4472E+00  0.4226E-02 -0.5000E-02       -0.00      1.00      0.00     -1.67    180.33     -0.68      181.18
             0.4472E+00  0.4226E-02  0.5000E-02       -0.00      1.00      0.00     -1.64    -36.21     -0.10       35.42
          4  0.4472E+00  0.1577E-01 -0.5000E-02       -0.00      1.00      0.00      1.11    236.21     -0.07      235.66
             0.4472E+00  0.1577E-01  0.5000E-02       -0.00      1.00      0.00      1.14     19.67     -0.65       19.16

    3                                             0.0
          1  0.5528E+00  0.4226E-02 -0.5000E-02       -0.00      1.00      0.00      1.42    160.64     -0.90      159.95
             0.5528E+00  0.4226E-02  0.5000E-02       -0.00      1.00      0.00      1.43     13.84      0.27       13.19
          2  0.5528E+00  0.1577E-01 -0.5000E-02        0.00      1.00      0.00     -1.24    186.16      0.26      186.79
             0.5528E+00  0.1577E-01  0.5000E-02        0.00      1.00      0.00     -1.23     39.36     -0.92       40.02
          3  0.6972E+00  0.4226E-02 -0.5000E-02       -0.00      1.00      0.00     -1.08    123.74     -0.35      124.28
             0.6972E+00  0.4226E-02  0.5000E-02       -0.00      1.00      0.00     -1.05     50.54     -0.16       51.08
          4  0.6972E+00  0.1577E-01 -0.5000E-02       -0.00      1.00      0.00      0.96    149.46     -0.16      148.98
             0.6972E+00  0.1577E-01  0.5000E-02       -0.00      1.00      0.00      0.99     76.26     -0.34       75.78

    4                                             0.0
          1  0.8028E+00  0.4226E-02 -0.5000E-02       -0.00      1.00      0.00      0.72    114.48     -0.59      114.13
             0.8028E+00  0.4226E-02  0.5000E-02       -0.00      1.00      0.00      0.74     79.33      0.19       78.96
          2  0.8028E+00  0.1577E-01 -0.5000E-02        0.00      1.00      0.00     -0.72    120.67      0.19      121.04
             0.8028E+00  0.1577E-01  0.5000E-02        0.00      1.00      0.00     -0.71     85.52     -0.59       85.88
          3  0.9472E+00  0.4226E-02 -0.5000E-02       -0.00      1.00      0.00     -0.21     99.39     -0.02       99.49
             0.9472E+00  0.4226E-02  0.5000E-02       -0.00      1.00      0.00     -0.18     94.54     -0.23       94.63
          4  0.9472E+00  0.1577E-01 -0.5000E-02       -0.00      1.00      0.00      0.17    105.46     -0.23      105.38
             0.9472E+00  0.1577E-01  0.5000E-02       -0.00      1.00      0.00      0.19    100.61     -0.02      100.52

                                * END OF STR3 *
 TOTAL CPU: 00:00:00
en/example/stat/3/2.txt · Last modified: 2024-11-07 09:24 by Petr Pařík