original_docstring: Specifies the velocity spectrum computation constants for the analysis
  
          APDL Command: VDDAM
          of shock resistance of shipboard structures.
  
          Parameters
          ----------
          vf
              Direction-dependent velocity coefficient for elastic or elastic-
              plastic analysis option (Default = 0).
  
          va, vb, vc
              Coefficients for the DDAM velocity spectrum equations.  See Dynamic
              Design Analysis Method in the Mechanical APDL Theory Reference.
              Default for these coefficients is zero.
  
          Notes
          -----
          This command specifies velocity coefficients to analyze shock
          resistance of shipboard equipment.  These coefficients are used to
          compute mode coefficients according to the equations given in Dynamic
          Design Analysis Method in the Mechanical APDL Theory Reference.  The
          form of these equations is based on the Naval NRL Dynamic Design
          Analysis Method.  This command, along with the ADDAM and SED commands,
          is used with the spectrum (ANTYPE,SPECTR) analysis as a special purpose
          alternative to the SV, FREQ, and SVTYP commands.  The mass and length
          units of the model must be in pounds and inches, respectively.
  
          DDASPEC may alternatively be used to calculate spectrum coefficients.
  
          This command is also valid in PREP7.
          
docstring: Specifies the velocity spectrum computation constants for the analysis
  APDL Command: VDDAM
  of shock resistance of shipboard structures.
  
  Parameters
  
  vf
  Direction-dependent velocity coefficient for elastic or elastic
  plastic analysis option (Default = 0).
  
  va, vb, vc
  Coefficients for the DDAM velocity spectrum equations.  See Dynamic
  Design Analysis Method in the Mechanical APDL Theory Reference.
  Default for these coefficients is zero.
  
  Notes
  
  This command specifies velocity coefficients to analyze shock
  resistance of shipboard equipment.  These coefficients are used to
  compute mode coefficients according to the equations given in Dynamic
  Design Analysis Method in the Mechanical APDL Theory Reference.  The
  form of these equations is based on the Naval NRL Dynamic Design
  Analysis Method.  This command, along with the ADDAM and SED commands,
  is used with the spectrum (ANTYPE,SPECTR) analysis as a special purpose
  alternative to the SV, FREQ, and SVTYP commands.  The mass and length
  units of the model must be in pounds and inches, respectively.
  
  DDASPEC may alternatively be used to calculate spectrum coefficients.
  
  This command is also valid in PREP7.
docstring_tokens: Specifies the velocity spectrum computation constants for the analysis APDL Command : VDDAM of shock resistance of shipboard structures . Parameters vf Direction - dependent velocity coefficient for elastic or elastic plastic analysis option ( Default = 0 ) . va vb vc Coefficients for the DDAM velocity spectrum equations . See Dynamic Design Analysis Method in the Mechanical APDL Theory Reference . Default for these coefficients is zero . Notes This command specifies velocity coefficients to analyze shock resistance of shipboard equipment . These coefficients are used to compute mode coefficients according to the equations given in Dynamic Design Analysis Method in the Mechanical APDL Theory Reference . The form of these equations is based on the Naval NRL Dynamic Design Analysis Method . This command along with the ADDAM and SED commands is used with the spectrum ( ANTYPE SPECTR ) analysis as a special purpose alternative to the SV FREQ and SVTYP commands . The mass and length units of the model must be in pounds and inches respectively . DDASPEC may alternatively be used to calculate spectrum coefficients . This command is also valid in PREP7 .
code: def vddam(self, vf="", va="", vb="", vc="", **kwargs):
          """Specifies the velocity spectrum computation constants for the analysis
  
          APDL Command: VDDAM
          of shock resistance of shipboard structures.
  
          Parameters
          ----------
          vf
              Direction-dependent velocity coefficient for elastic or elastic-
              plastic analysis option (Default = 0).
  
          va, vb, vc
              Coefficients for the DDAM velocity spectrum equations.  See Dynamic
              Design Analysis Method in the Mechanical APDL Theory Reference.
              Default for these coefficients is zero.
  
          Notes
          -----
          This command specifies velocity coefficients to analyze shock
          resistance of shipboard equipment.  These coefficients are used to
          compute mode coefficients according to the equations given in Dynamic
          Design Analysis Method in the Mechanical APDL Theory Reference.  The
          form of these equations is based on the Naval NRL Dynamic Design
          Analysis Method.  This command, along with the ADDAM and SED commands,
          is used with the spectrum (ANTYPE,SPECTR) analysis as a special purpose
          alternative to the SV, FREQ, and SVTYP commands.  The mass and length
          units of the model must be in pounds and inches, respectively.
  
          DDASPEC may alternatively be used to calculate spectrum coefficients.
  
          This command is also valid in PREP7.
          """
          command = f"VDDAM,{vf},{va},{vb},{vc}"
          return self.run(command, **kwargs)
code_tokens: def vddam ( self , vf = "" , va = "" , vb = "" , vc = "" , ** kwargs ) : command = f"VDDAM,{vf},{va},{vb},{vc}" return self . run ( command , ** kwargs )
short_docstring: Specifies the velocity spectrum computation constants for the analysis
  APDL Command: VDDAM
  of shock resistance of shipboard structures.
short_docstring_tokens: Specifies the velocity spectrum computation constants for the analysis APDL Command : VDDAM of shock resistance of shipboard structures .
comment: """Specifies the velocity spectrum computation constants for the analysis
  
          APDL Command: VDDAM
          of shock resistance of shipboard structures.
  
          Parameters
          ----------
          vf
              Direction-dependent velocity coefficient for elastic or elastic-
              plastic analysis option (Default = 0).
  
          va, vb, vc
              Coefficients for the DDAM velocity spectrum equations.  See Dynamic
              Design Analysis Method in the Mechanical APDL Theory Reference.
              Default for these coefficients is zero.
  
          Notes
          -----
          This command specifies velocity coefficients to analyze shock
          resistance of shipboard equipment.  These coefficients are used to
          compute mode coefficients according to the equations given in Dynamic
          Design Analysis Method in the Mechanical APDL Theory Reference.  The
          form of these equations is based on the Naval NRL Dynamic Design
          Analysis Method.  This command, along with the ADDAM and SED commands,
          is used with the spectrum (ANTYPE,SPECTR) analysis as a special purpose
          alternative to the SV, FREQ, and SVTYP commands.  The mass and length
          units of the model must be in pounds and inches, respectively.
  
          DDASPEC may alternatively be used to calculate spectrum coefficients.
  
          This command is also valid in PREP7.
          """