$-------------------------------------------------------------------------------
$                       RIGID FORMAT No. 1, Static Analysis
$           Long, Narrow, 5 x 100 Orthotropic Plate (INPUT, 1-4-1)
$ 
$ A. Description
$ 
$ A long, narrow, orthotropic plate is modeled and analyzed to illustrate
$ NASTRAN operations with spill logic for problems too large for available core.
$ Other features of this problem include grid point resequencing, use of
$ orthotropic materials, application of quarter symmetry, and use of the INPUT
$ module.
$ 
$ This model could be run if desired with an optimal bandwidth by simply
$ deleting the SEQGP cards from the bulk data.
$ 
$ B. Input
$ 
$ 1. Parameters
$ 
$    Material Elastic Properties
$ 
$    |             |     |                     |                |
$    | sigma sub 1 |     | 4.0+6  2.0+6   0.   |  epsilon sub 1 |
$    | sigma sub 2 |  =  | 2.0+6  6.0+6   0.   |  epsilon sub 2 |
$    | tau sub 12  |     |   0.     0.   3.0+6 |  gamma sub 12  |
$    |             |     |                     |                |
$ 
$ 
$    I = .0833333 (area moment of inertia per unit width)
$ 
$ C. Results
$ 
$ The displacement and stress results from NASTRAN are presented along with
$ theoretical results in Tables 1 and 2. The theoretical results are from an
$ infinitely long continuous plate analyzed in Section 37 of Reference 4.
$ 
$ Table 1. NASTRAN and Theoretical Displacements for Long, Narrow, Orthotropic
$ Plate
$                            ---------------------------
$                                                      4
$                                   Z DISPLACEMENT X 10
$                                   --------------------
$                            GRID   THEORY      NASTRAN
$                            ---------------------------
$                              1     3.048       3.037
$                              2     2.899       2.889
$                              3     2.466       2.457
$                              4     1.792       1.785
$                              5     0.942       0.939
$                              7     2.949       2.940
$                             13     2.723       2.714
$                             19     2.446       2.435
$                             25     2.157       2.145
$                             31     1.880       1.866
$                             37     1.625       1.611
$                             43     1.397       1.383
$                            ---------------------------
$ 
$ Table 2. NASTRAN and Theoretical Stresses for Long, Narrow, Orthotropic Plate
$           ------------------------------------------------------------
$                    STRESS X           STRESS Y          SHEAR STRESS
$           EL.   ----------------   ----------------   ----------------
$           ID.   THEORY   NASTRAN   THEORY   NASTRAN   THEORY   NASTRAN
$           ------------------------------------------------------------
$            1    19.05    18.90     20.35    20.40     -0.39    -0.39
$            2    17.19    17.05     18.36    18.40     -1.12    -1.13
$            3    13.64    13.53     14.57    14.60     -1.74    -1.76
$            4     8.76     8.69      9.35     9.38     -2.19    -2.22
$            5     3.02     2.99      3.22     3.23     -2.43    -2.46
$            7    15.86    15.76     12.91    12.90     -0.84    -0.88
$           13    13.27    13.20      8.28     8.23     -1.03    -1.06
$           19    11.14    11.08      5.38     5.33     -1.07    -1.09
$           25     9.37     9.33      3.55     3.51     -1.02    -1.04
$           31     7.90     7.86      2.38     2.36     -0.94    -0.95
$           37     6.67     6.63      1.64     1.63     -0.84    -0.85
$           ------------------------------------------------------------
$     
$ APPLICABLE REFERENCES
$ 
$ 4. S. Timoshemko, THEORY OF PLATES AND SHELLS. McGraw Hill, 1940. 
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