seapy.components.beam.SubsystemShear

class seapy.components.beam.SubsystemShear(name, system, **properties)[source]

Bases: seapy.subsystems.subsystemstructural.SubsystemStructural

Subsystem for shear waves in a 1D isotropic system.

__init__(name, system, **properties)

Constructor.

Parameters:
  • name (string) – Identifier
  • component (SeaPy.components.Component) – Component

Methods

__init__(name, system, **properties) Constructor.
addExcitation(name, model, **properties) Add excitation to subsystem.
disable([couplings]) Disable this subsystem.
enable([couplings]) Enable this subsystem.
info([attributes]) Return dataframe.
plot(quantity[, yscale]) Plot quantity.

Attributes

SORT str(object=’‘) -> str
average_frequency_spacing Average frequency spacing for bending waves.
classname Name of class of the object.
component
conductance Conductance G.
conductance_point_average Average point conductance of a structural component.
damping_term The damping term is the ratio of the modal half-power bandwidth to the average modal frequency spacing.
dlf Damping loss factor of subsystem.
enabled Switch indicating whether the object is enabled.
energy Total energy E in subsystem.
frequency Frequency.
impedance Impedance
included Indicates whether the object is included in the analysis.
linked_couplings_from
linked_couplings_to
linked_excitations
mobility Mobility Y
modal_density Modal density.
modal_energy Class capable of containing spectral values.
modal_overlap_factor Modal overlap factor.
name
power_input Total input power due to excitations.
resistance Resistance R, the real part of the impedance Z.
resistance_point_average Average point resistance.
soundspeed_group Group velocity for shear wave.
soundspeed_phase Phase velocity for shear wave.
tlf Total loss factor.
velocity Vibrational velocity v.
velocity_level Velocity level L_v.
wavenumber Wave number.
average_frequency_spacing[source]

Average frequency spacing for bending waves.

Return type:numpy.ndarray

\overline{\delta f}_T^{1D} = \frac{c_T}{2L}

See Lyon, eq. 8.1.8

impedance[source]

Impedance

Return type:numpy.ndarray
soundspeed_group[source]

Group velocity for shear wave.

Return type:numpy.ndarray

c_{T,g}^{1D} = c_{T,\phi}^{1D}

soundspeed_phase[source]

Phase velocity for shear wave.

Return type:numpy.ndarray

c_{T,g}^{1D} = \sqrt{\frac{G J }{\rho I_p}}

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