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Subsections


Example Model BOXG

This example illustrates the creation of a box-section cantilever beam with a single point load at the free end. Gravitational forces are not modelled.





  
Figure 9.1: Example Cantilever Beam
\begin{figure}
\centerline{
\psfig {figure=ex1.ps,width=5.0in}
}\end{figure}

FEMGEN Commands for Model BOXG

        
 PROPERTY FE-PROG NASTRAN
 GEOM POINT  P1    0
 GEOM POINT  P2    100
 PROP MAT MAT STEM  0.21000E+06 0.29000     0.78600E-05 0.15000E-04  293.00    
 PROP PHYS BOX PH1 10 8 1  2   
 PROP PHYS BOX PH1 ORIE  0 0 0 1
 GEOM LINE STR  L1   P1   P2       20
 MESHING TYPE L1   BE2     1
 PROP ATTACH L1   STEM PH1 
 PROP LOAD FORC LO1    1 P2   -0.10000E+03     2
 PROP BOUN CONS P1 9
 MESH GENERATE
 UTILITY WRITE NASTRAN boxg.dat
 YES

NASTRAN Input Deck for Model BOXG

 
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ NASTRAN INPUT DECK                        $
$ CREATED BY FEMGV VERSION 5.0              $
$ TRANSLATED BY FEMGEN-NASTRAN VERSION 6.110$
$ FILE CREATED: DATE 20/02/98 TIME 11:00:36 $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ MESSAGE LOGGING IS ON                     $
$ EXTERNAL MATERIAL DIRECTORY NOT USED      $
$ SOLUTION SEQUENCE DIRECTORY NOT USED      $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$ NASTRAN CARDS ... 
$ NONE
$
$ RESULT OUTPUT FILE ... 
$
ASSIGN OUTPUT2=b31box.op2,STATUS=UNKNOWN,UNIT=12                                
$
$ MODEL TITLE ... 
$
ID FEMGEN MODEL: b31box TITLE: No model title      
$
$ EXECUTIVE CONTROL CARDS ... 
$
SOL 24
TIME 60
COMPILE SOL24 SOUIN=MSCSOU NOREF NOLIST
ALTER 176
OUTPUT2 CASECC,GPL,BGPDT,ECT,CSTM///V,N,IUNIT=12 $
OUTPUT2 OPG1,OQG1,OUGV1,OES1,OEF1///V,N,IUNIT=12 $
ALTER 189
OUTPUT2 OGPFB1,,,,///V,N,IUNIT=12 $
ALTER 210
OUTPUT2 OSTR1,,,,///V,N,IUNIT=12 $
CEND
$
$ CASE CONTROL CARDS ... 
$
DISP(PLOT) = ALL
STRESS(PLOT) = ALL
SPC          = 1
SUBCASE    1
LOAD 1001
$
$$$$$$$$$$$$$$$$$
$ BULK DATA ... $
$$$$$$$$$$$$$$$$$
$
BEGIN BULK
PARAM,OUNIT2,12
$
$ ADDITIONAL BULK DATA CARDS ... 
$ NONE
$
$ GRID POINT CARDS ... 
$
$             ID C-SYS  X       Y       Z        LOC-SYS
GRID           1        0.0     0.0     0.0             
GRID           2        5.      0.0     0.0             
GRID           3        10.     0.0     0.0             
GRID           4        15.     0.0     0.0             
GRID           5        20.     0.0     0.0             
GRID           6        25.     0.0     0.0             
GRID           7        30.     0.0     0.0             
GRID           8        35.     0.0     0.0             
GRID           9        40.     0.0     0.0             
GRID          10        45.     0.0     0.0             
GRID          11        50.     0.0     0.0             
GRID          12        55.     0.0     0.0             
GRID          13        60.     0.0     0.0             
GRID          14        65.     0.0     0.0             
GRID          15        70.     0.0     0.0             
GRID          16        75.     0.0     0.0             
GRID          17        80.     0.0     0.0             
GRID          18        85.     0.0     0.0             
GRID          19        90.     0.0     0.0             
GRID          20        95.     0.0     0.0             
GRID          21        100.    0.0     0.0             
$
$ LOCAL COORDINATE SYSTEM CARDS ... 
$
$ NONE SPECIFIED
$
$ SINGLE POINT CONSTRAINT CARDS ... 
$
$   TYPE     SID       G       C       D       G       C       D
SPC            1       1  123456       0
$
$ RIGID ELEMENTS, MULTI-POINT CONSTRAINTS ... 
$
$ NONE SPECIFIED
$
$ ELEMENT CARDS ... 
$
$ TYPE       EID     PID       GRID POINTS ...
CBAR           1       1       1       2     0.0      5.     0.0        +E1     
+E1                          0.0     0.0     0.0     0.0     0.0     0.0
CBAR           2       1       2       3     0.0      5.     0.0        +E2     
+E2                          0.0     0.0     0.0     0.0     0.0     0.0
CBAR           3       1       3       4     0.0      5.     0.0        +E3     
+E3                          0.0     0.0     0.0     0.0     0.0     0.0
CBAR           4       1       4       5     0.0      5.     0.0        +E4     
+E4                          0.0     0.0     0.0     0.0     0.0     0.0
CBAR           5       1       5       6     0.0      5.     0.0        +E5     
+E5                          0.0     0.0     0.0     0.0     0.0     0.0
CBAR           6       1       6       7     0.0      5.     0.0        +E6     
+E6                          0.0     0.0     0.0     0.0     0.0     0.0
CBAR           7       1       7       8     0.0      5.     0.0        +E7     
+E7                          0.0     0.0     0.0     0.0     0.0     0.0
CBAR           8       1       8       9     0.0      5.     0.0        +E8     
+E8                          0.0     0.0     0.0     0.0     0.0     0.0
CBAR           9       1       9      10     0.0      5.     0.0        +E9     
+E9                          0.0     0.0     0.0     0.0     0.0     0.0
CBAR          10       1      10      11     0.0      5.     0.0        +E10    
+E10                         0.0     0.0     0.0     0.0     0.0     0.0
CBAR          11       1      11      12     0.0      5.     0.0        +E11    
+E11                         0.0     0.0     0.0     0.0     0.0     0.0
CBAR          12       1      12      13     0.0      5.     0.0        +E12    
+E12                         0.0     0.0     0.0     0.0     0.0     0.0
CBAR          13       1      13      14     0.0      5.     0.0        +E13    
+E13                         0.0     0.0     0.0     0.0     0.0     0.0
CBAR          14       1      14      15     0.0      5.     0.0        +E14    
+E14                         0.0     0.0     0.0     0.0     0.0     0.0
CBAR          15       1      15      16     0.0      5.     0.0        +E15    
+E15                         0.0     0.0     0.0     0.0     0.0     0.0
CBAR          16       1      16      17     0.0      5.     0.0        +E16    
+E16                         0.0     0.0     0.0     0.0     0.0     0.0
CBAR          17       1      17      18     0.0      5.     0.0        +E17    
+E17                         0.0     0.0     0.0     0.0     0.0     0.0
CBAR          18       1      18      19     0.0      5.     0.0        +E18    
+E18                         0.0     0.0     0.0     0.0     0.0     0.0
CBAR          19       1      19      20     0.0      5.     0.0        +E19    
+E19                         0.0     0.0     0.0     0.0     0.0     0.0
CBAR          20       1      20      21     0.0      5.     0.0        +E20    
+E20                         0.0     0.0     0.0     0.0     0.0     0.0
$
$ PHYSICAL PROPERTY CARDS ...
$
$ PH1        PID    MID1
PBAR           1       1     44. 558.667 318.667 545.391     0.0        +P1     
+P1           5.      4.     -5.      4.      5.     -4.     -5.     -4.+P2     
+P2      .272727 .727273     0.0
$
$ MATERIAL CARDS ...
$
$ STEM       MID       E       G      NU     RHO       A    TREF
MAT1           1 210000.             .29 .786E-5  .15E-4    293.
$
$ LOAD CARDS ... 
$
$ LOAD CASE    1
$
$
$ LO1        SID       G     CID       F      N1      N2      N3
FORCE          1      21             1.0           -100.        
$
$ LOAD COMBINATION CARDS ... 
$
$   LOAD     SID       S      S1    LSID
LOAD        1001     1.0     1.0       1
ENDDATA
$ FEMGEN-NASTRAN TRANSLATION COMPLETED WITH ...
$ INFORMATION MESSAGES: 0
$ WARNING     MESSAGES: 0
$ ERROR       MESSAGES: 0



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8/18/1999