This is the guide for the Modal analysis in MSC (or NX)/NASTRAN. It is necessary for you to the appreciate DMAP command in order to run your input file in MSC (or NX)/ NASTRAN. The below step informs to you how to modify DMAP command. The example file is located in “<Install Dir>\Toolkits\Flexible input files\NASTRAN\NASTRAN_normal.dat”
1. Delete
•Delete commands related to the super elements
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SEALL = ALL |
•Delete unnecessary commands in the case control section.
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ECHO = NONE MAXLINES = 999999999 $ Direct Text Input for Global Case Control Data SUBCASE 1 $ Subcase name : Default
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Figure 1 DMAP command (Delete)
2. Add
•Input Global mass and stiffness matrix
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COMPILE PHASE18 nolist noref Alter ‘call sekmr’$ |
•Add the following commands in the case control section.
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ECHO = PUNCH |
Figure 2 DMAP command (Add)