genericROM.Containers.Loadings.Centrifugal module

class Centrifugal(solutionName, set)[source]

Bases: LoadingBase

Class containing a Loading of type centrifugal effects for mechanical problems.

rotationVelocityTimes

time values on which rotation velocity values are provided

Type:: np.ndarray or list of floats

rotationVelocityValues

rotation velocity values at the corresponding time values

Type:: np.ndarray or list of floats

center

np.ndarray of size 1, 2 or 3, containing the coordinates of the center of rotation

Type:: np.ndarray

direction

np.ndarray of size 1, 2 or 3, containing the unit vector of direction of rotation

Type:: np.ndarray

coefficient

coefficient multiplying the rotational velocity

Type:: float

reducedUnitCentrifugalVector

np.ndarray of size (numberOfModes) containing the precomputed vector “red” for deriving the centrifugal reduced external forces contribution is the form: (coefficient*rotationVelocity)**2*red

Type:: np.ndarray

ComputeContributionToReducedExternalForces(time)[source]

Computes and returns the reduced external forces contribution of the loading

Parameters:: time (float)
Returns:: of size (numberOfModes,)
Return type:: np.ndarray

GetRotationVelocityAtTime(time: float) → float[source]

Computes the rotationVelocity at time, using PieceWiseLinearInterpolation

Parameters:: time (float)
Returns:: rotationVelocity at time
Return type:: float

ReduceLoading(mesh, problemData, reducedOrderBases, operatorCompressionData=None, integrationRule=<Muscat.FE.IntegrationRules.MeshQuadrature object>)[source]

Computes and sets the reduced representation of the loading

Parameters:

mesh (Muscat.Containers.Mesh) – mesh of the high-fidelity model
problemData (ProblemData) – problemData containing the loading
reducedOrderBases (dict(str: np.ndarray)) – dictionary with solutionNames (str) as keys and reducedOrderBases (np.ndarray of size (numberOfModes, numberOfDOFs)) as values
operatorCompressionData (dict(str: custom_data_structure)) – not used in this loading dictionary with solutionNames (str) as keys and data structure generated by the operator compression step as values

SetCenter(center)[source]

Sets center

Parameters:: center (np.ndarray or list of floats) – coordinates of the center of rotation

SetCoefficient(coefficient)[source]

Sets coefficient

Parameters:: coefficient (float) – coefficient multiplying the rotational velocity

SetDirection(direction)[source]

Sets direction

Parameters:: direction (np.ndarray or list of floats) – unit vector of direction of rotation

SetRotationVelocity(rotationVelocity)[source]

Sets rotationVelocityTimes and rotationVelocityValues

Parameters:: rotationVelocity (dict) – dictionary with time steps (float) as keys and the values of the rotation velocity (float)