Spectrum options#
These SOLUTION commands are used to define options for spectrum analyses.
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Specifies the acceleration spectrum computation constants for the |
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Defines PSD cospectral values. |
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Specifies the complete quadratic mode combination method. |
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APDL Command: DDASPEC |
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Specifies the double sum mode combination method. |
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Defines the frequency points for the SV vs. |
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Specifies the grouping mode combination method. |
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Specifies the missing mass response calculation. |
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Specifies the Naval Research Laboratory (NRL) sum mode combination |
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Calculates participation factors for the PSD or multi-point response |
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Controls the behavior of an analysis when a negative or zero equation solver pivot value is encountered. |
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Specifies the power spectral density mode combination method. |
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Defines the frequency points for the input spectrum tables PSDVAL vs. |
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Displays input PSD curves |
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Controls solution output written to the results file from a PSD |
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Defines a partially correlated excitation in a PSD analysis. |
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Defines the type of input PSD. |
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Defines PSD values. |
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Defines a wave propagation excitation in a PSD analysis. |
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Defines PSD quadspectral values. |
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Specifies a rocking response spectrum. |
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Specifies the Rosenblueth mode combination method. |
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Specifies the rigid response calculation. |
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Defines the excitation direction for response spectrum and PSD |
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Defines input spectrum damping in a multi-point response spectrum |
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Defines the frequency points for the input spectrum tables SPVAL vs. |
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Displays input spectrum curves for MPRS analysis. |
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Selects the spectrum type and other spectrum options. |
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Defines the type of multi-point response spectrum. |
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Defines multi-point response spectrum values. |
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Specifies the square root of sum of squares mode combination method. |
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Defines spectrum values to be associated with frequency points. |
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Displays input spectrum curves. |
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Defines the type of single-point response spectrum. |
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Specifies the velocity spectrum computation constants for the analysis |