FEA Analysis

Structure for the analysis tuple = (‘Analysis Name’, ‘Value’). 'Analysis Name' defines the reference name for the analysis being specified. The "Value" can either be a JSON String dictionary (see Section JSON String Dictionary) or a single string keyword (see Section Single Value String).

JSON String Dictionary

If "Value" is JSON string dictionary (e.g. "Value" = {"numDesiredEigenvalue": 10, "eigenNormalization": "MASS", "numEstEigenvalue": 1, "extractionMethod": "GIV", "frequencyRange": [0, 10000]}) the following keywords ( = default values) may be used:

• analysisType = "Modal"
  Type of load. Options: "Modal", "Static".

• analysisLoad = "(no default)"
  Single or list of "Load Name"s defined in FEA Load in which to use for the analysis (e.g. "Name1" or ["Name1","Name2",...].

• analysisConstraint = "(no default)"
  Single or list of "Constraint Name"s defined in FEA Constraint in which to use for the analysis (e.g. "Name1" or ["Name1","Name2",...].

• analysisSupport = "(no default)"
  Single or list of "Support Name"s defined in FEA Support in which to use for the analysis (e.g. "Name1" or ["Name1","Name2",...].

• extractionMethod = "(no default)"
  Extraction method for modal analysis.

• frequencyRange = [0.0, 0.0]
  Frequency range of interest for modal analysis.
  Note: specifying inf (math.inf or np.inf in Python) results in a blank entry in the input card

• numEstEigenvalue = 0
  Number of estimated eigenvalues for modal analysis.

• numDesiredEigenvalue = 0
  Number of desired eigenvalues for modal analysis.
  A value <= 0 will result in a blank card entry

• eigenNormalization = "(no default)"
  Method of eigenvector renormalization. Options: "POINT", "MAX", "MASS"

• gridNormalization = 0
  Grid point to be used in normalizing eigenvector to 1.0 when using eigenNormalization = "POINT"

• componentNormalization = 0
  Degree of freedom about "gridNormalization" to be used in normalizing eigenvector to 1.0 when using eigenNormalization = "POINT"

• lanczosMode = 2
  Mode refers to the Lanczos mode type to be used in the solution. In mode 3 the mass matrix, Maa,must be nonsingular whereas in mode 2 the matrix K aa - sigma*Maa must be nonsingular

• lanczosType = "(no default)"
  Lanczos matrix type. Options: DPB, DGB.

• aeroSymmetryXY = "(no default)"
  Aerodynamic symmetry about the XY Plane. Options: SYM, ANTISYM, ASYM. Aerodynamic symmetry about the XY Plane. Options: SYM, ANTISYM, ASYM. SYMMETRIC Indicates that a half span aerodynamic model is moving in a symmetric manner with respect to the XY plane. ANTISYMMETRIC Indicates that a half span aerodynamic model is moving in an antisymmetric manner with respect to the XY plane. ASYMMETRIC Indicates that a full aerodynamic model is provided.

• aeroSymmetryXZ = "(no default)"
  Aerodynamic symmetry about the XZ Plane. Options: SYM, ANTISYM, ASYM. SYMMETRIC Indicates that a half span aerodynamic model is moving in a symmetric manner with respect to the XZ plane. ANTISYMMETRIC Indicates that a half span aerodynamic model is moving in an antisymmetric manner with respect to the XZ plane. ASYMMETRIC Indicates that a full aerodynamic model is provided.

Single Value String

If "Value" is a string, the string value may correspond to an entry in a predefined analysis lookup table. NOT YET IMPLEMENTED!!!!