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LOAD bulk data entry doesn't support PLOAD4 #196

@victorkemp

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@victorkemp

Not really a bug because this capability is not listed in the manual. But it's a pain nonetheless.

With PLOAD4, the solution has all-zero displacements.

SOL 101
CEND
DISPLACEMENT = ALL
SPCFORCES = ALL
SPC = 1
LOAD = 1
BEGIN BULK
GRID           1       0   0.0+0   0.0+0   0.0+0       0
GRID           2       0   5.0-1   0.0+0   0.0+0       0
GRID           3       0   5.0-1   1.0+0   0.0+0       0
GRID           4       0   0.0+0   1.0+0   0.0+0       0
GRID           5       0   1.0+0   0.0+0   0.0+0       0
GRID           6       0   1.0+0   1.0+0   0.0+0       0
MAT1           1  2.0+11  1.0+11   0.0+0   0.0+0   0.0+0   0.0+0
SPC            1       1     123   0.0+0
SPC            1       4      13   0.0+0
SPC            1       5       3   0.0+0
SPC            1       6       3   0.0+0
PSHELL         1       1   1.0-2       1               1           0.0+0
CQUAD4         1       1       1       2       3       4   0.0+0   0.0+0
CQUAD4         2       1       2       5       6       3   0.0+0   0.0+0
PLOAD4         2       2  -3.0+3
PLOAD4         2       1  -3.0+3
LOAD           1   1.0+0   1.0+0       2
ENDDATA 

Here's the same file except PLOAD4 is changed to PLOAD2 and does give non-zero displacement where it should (T3 of GPs 2 and 3).

SOL 101
CEND
DISPLACEMENT = ALL
SPCFORCES = ALL
SPC = 1
LOAD = 1
BEGIN BULK
GRID           1       0   0.0+0   0.0+0   0.0+0       0
GRID           2       0   5.0-1   0.0+0   0.0+0       0
GRID           3       0   5.0-1   1.0+0   0.0+0       0
GRID           4       0   0.0+0   1.0+0   0.0+0       0
GRID           5       0   1.0+0   0.0+0   0.0+0       0
GRID           6       0   1.0+0   1.0+0   0.0+0       0
MAT1           1  2.0+11  1.0+11   0.0+0   0.0+0   0.0+0   0.0+0
SPC            1       1     123   0.0+0
SPC            1       4      13   0.0+0
SPC            1       5       3   0.0+0
SPC            1       6       3   0.0+0
PSHELL         1       1   1.0-2       1               1           0.0+0
CQUAD4         1       1       1       2       3       4   0.0+0   0.0+0
CQUAD4         2       1       2       5       6       3   0.0+0   0.0+0
PLOAD2         2  -3.0+3       2
PLOAD2         2  -3.0+3       1
LOAD           1   1.0+0   1.0+0       2
ENDDATA 

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