original_docstring: APDL Command: DDASPEC
  
          Specifies the shock spectrum computation constants for DDAM analysis.
  
          Parameters
          ----------
          keyref
              Key for reference catalog:
  
              1 - The spectrum computation constants are based on NRL-1396 (default). For more
                  information, see Dynamic Design Analysis Method in the
                  Mechanical APDL Theory Reference
  
          shptyp
              Select the ship type:
  
              SUBM - Submarine
  
              SURF - Surface ship
  
          mountloc
              Select the mounting location:
  
              HULL - Hull mounting location. These structures are mounted directly to basic hull
                     structures like frames, structural bulkheads below the water
                     line, and shell plating above the water line.
  
              DECK - Deck mounting location. These structures are mounted directly to decks, non-
                     structural bulkheads, or to structural bulkheads above the
                     water line.
  
              SHEL - Shell plating mounting location. These structures are mounted directly to shell
                     plating below the water line without intervening
                     foundations.
  
          deftyp
              Select the deformation type:
  
              ELAS - Elastic deformation (default)
  
              PLAS - Elastic-plastic deformation
  
          amin
              Minimum acceleration value in inch/sec2. It defaults to 2316
              inch/sec2 which equals 6g, where g is the acceleration due to
              gravity (g = 386 in/sec2).
  
          Notes
          -----
          The excitation direction is required to calculate the spectrum
          coefficients. Issue the SED command before issuing DDASPEC.
  
          ADDAM and VDDAM may alternatively be used to calculate spectrum
          coefficients.
  
          This command is also valid in PREP7.
          
docstring: APDL Command: DDASPEC
  Specifies the shock spectrum computation constants for DDAM analysis.
  
  Parameters
  
  keyref
  Key for reference catalog.
  
  The spectrum computation constants are based on NRL-1396 (default). For more
  information, see Dynamic Design Analysis Method in the
  Mechanical APDL Theory Reference
  
  shptyp
  Select the ship type.
  
  Submarine
  
  Surface ship
  
  mountloc
  Select the mounting location.
  
  Hull mounting location. These structures are mounted directly to basic hull
  structures like frames, structural bulkheads below the water
  line, and shell plating above the water line.
  
  Deck mounting location. These structures are mounted directly to decks, non
  structural bulkheads, or to structural bulkheads above the
  water line.
  
  Shell plating mounting location. These structures are mounted directly to shell
  plating below the water line without intervening
  foundations.
  
  deftyp
  Select the deformation type.
  
  Elastic deformation (default)
  
  Elastic-plastic deformation
  
  amin
  Minimum acceleration value in inch/sec2. It defaults to 2316
  inch/sec2 which equals 6g, where g is the acceleration due to
  gravity (g = 386 in/sec2).
  
  Notes
  
  The excitation direction is required to calculate the spectrum
  coefficients. Issue the SED command before issuing DDASPEC.
  
  ADDAM and VDDAM may alternatively be used to calculate spectrum
  coefficients.
  
  This command is also valid in PREP7.
docstring_tokens: APDL Command : DDASPEC Specifies the shock spectrum computation constants for DDAM analysis . Parameters keyref Key for reference catalog . The spectrum computation constants are based on NRL - 1396 ( default ) . For more information see Dynamic Design Analysis Method in the Mechanical APDL Theory Reference shptyp Select the ship type . Submarine Surface ship mountloc Select the mounting location . Hull mounting location . These structures are mounted directly to basic hull structures like frames structural bulkheads below the water line and shell plating above the water line . Deck mounting location . These structures are mounted directly to decks non structural bulkheads or to structural bulkheads above the water line . Shell plating mounting location . These structures are mounted directly to shell plating below the water line without intervening foundations . deftyp Select the deformation type . Elastic deformation ( default ) Elastic - plastic deformation amin Minimum acceleration value in inch / sec2 . It defaults to 2316 inch / sec2 which equals 6g where g is the acceleration due to gravity ( g = 386 in / sec2 ) . Notes The excitation direction is required to calculate the spectrum coefficients . Issue the SED command before issuing DDASPEC . ADDAM and VDDAM may alternatively be used to calculate spectrum coefficients . This command is also valid in PREP7 .
code: def ddaspec(self, keyref="", shptyp="", mountloc="", deftyp="", amin="", **kwargs):
          """APDL Command: DDASPEC
  
          Specifies the shock spectrum computation constants for DDAM analysis.
  
          Parameters
          ----------
          keyref
              Key for reference catalog:
  
              1 - The spectrum computation constants are based on NRL-1396 (default). For more
                  information, see Dynamic Design Analysis Method in the
                  Mechanical APDL Theory Reference
  
          shptyp
              Select the ship type:
  
              SUBM - Submarine
  
              SURF - Surface ship
  
          mountloc
              Select the mounting location:
  
              HULL - Hull mounting location. These structures are mounted directly to basic hull
                     structures like frames, structural bulkheads below the water
                     line, and shell plating above the water line.
  
              DECK - Deck mounting location. These structures are mounted directly to decks, non-
                     structural bulkheads, or to structural bulkheads above the
                     water line.
  
              SHEL - Shell plating mounting location. These structures are mounted directly to shell
                     plating below the water line without intervening
                     foundations.
  
          deftyp
              Select the deformation type:
  
              ELAS - Elastic deformation (default)
  
              PLAS - Elastic-plastic deformation
  
          amin
              Minimum acceleration value in inch/sec2. It defaults to 2316
              inch/sec2 which equals 6g, where g is the acceleration due to
              gravity (g = 386 in/sec2).
  
          Notes
          -----
          The excitation direction is required to calculate the spectrum
          coefficients. Issue the SED command before issuing DDASPEC.
  
          ADDAM and VDDAM may alternatively be used to calculate spectrum
          coefficients.
  
          This command is also valid in PREP7.
          """
          command = f"DDASPEC,{keyref},{shptyp},{mountloc},{deftyp},{amin}"
          return self.run(command, **kwargs)
code_tokens: def ddaspec ( self , keyref = "" , shptyp = "" , mountloc = "" , deftyp = "" , amin = "" , ** kwargs ) : command = f"DDASPEC,{keyref},{shptyp},{mountloc},{deftyp},{amin}" return self . run ( command , ** kwargs )
short_docstring: APDL Command: DDASPEC
  Specifies the shock spectrum computation constants for DDAM analysis.
short_docstring_tokens: APDL Command : DDASPEC Specifies the shock spectrum computation constants for DDAM analysis .
comment: """APDL Command: DDASPEC
  
          Specifies the shock spectrum computation constants for DDAM analysis.
  
          Parameters
          ----------
          keyref
              Key for reference catalog:
  
              1 - The spectrum computation constants are based on NRL-1396 (default). For more
                  information, see Dynamic Design Analysis Method in the
                  Mechanical APDL Theory Reference
  
          shptyp
              Select the ship type:
  
              SUBM - Submarine
  
              SURF - Surface ship
  
          mountloc
              Select the mounting location:
  
              HULL - Hull mounting location. These structures are mounted directly to basic hull
                     structures like frames, structural bulkheads below the water
                     line, and shell plating above the water line.
  
              DECK - Deck mounting location. These structures are mounted directly to decks, non-
                     structural bulkheads, or to structural bulkheads above the
                     water line.
  
              SHEL - Shell plating mounting location. These structures are mounted directly to shell
                     plating below the water line without intervening
                     foundations.
  
          deftyp
              Select the deformation type:
  
              ELAS - Elastic deformation (default)
  
              PLAS - Elastic-plastic deformation
  
          amin
              Minimum acceleration value in inch/sec2. It defaults to 2316
              inch/sec2 which equals 6g, where g is the acceleration due to
              gravity (g = 386 in/sec2).
  
          Notes
          -----
          The excitation direction is required to calculate the spectrum
          coefficients. Issue the SED command before issuing DDASPEC.
  
          ADDAM and VDDAM may alternatively be used to calculate spectrum
          coefficients.
  
          This command is also valid in PREP7.
          """