seapy.couplings.couplingsurfaceacoustical.CouplingSurfaceAcoustical

class seapy.couplings.couplingsurfaceacoustical.CouplingSurfaceAcoustical(name, system, **properties)[source]

Bases: seapy.couplings.coupling.Coupling

Coupling for cavity3D to cavity transmission.

__init__(name, system, **properties)

Constructor.

Parameters:
  • name (string) – Identifier
  • junction (seapy.junctions.junction) – junction
  • subsystem_from (seapy.subsystems.Subsystem) – subsystem from
  • subsystem_to (seapy.subsystems.Subsystem) – subsystem_to

Methods

__init__(name, system, **properties) Constructor.
CouplingSurfaceAcoustical.df
disable([subsystems]) Disable this coupling.
enable([subsystems]) Enable this coupling.
info([attributes]) Return dataframe.
plot(quantity[, yscale]) Plot quantity.

Attributes

SORT str(object=’‘) -> str
classname Name of class of the object.
clf Coupling loss factor for transmission from a 3D cavity to a 3D cavity.
CouplingSurfaceAcoustical.density
enabled Switch indicating whether the object is enabled.
frequency Frequency.
impedance_from Choses the right impedance of subsystem_from.
impedance_to Choses the right impedance of subsystem_from.
included Indicates whether the object is included in the analysis.
junction
mobility_from Mobility of subsystem_from corrected for the type of coupling.
mobility_to Mobility of subsystem_to corrected for the type of coupling.
modal_coupling_factor Modal coupling factor of the coupling.
name
reciproce Reciproce or inverse coupling.
resistance_from Resistance of subsystem_from corrected for the type of coupling.
resistance_to Resistance of subsystem_to corrected for the type of coupling.
subsystem_from
subsystem_to
tau Non-resonant transmission coefficient by Leppington et al (1987).
area[source]

Area.

clf[source]

Coupling loss factor for transmission from a 3D cavity to a 3D cavity.

\eta_{12} = \frac{c S \tau_{12}}{8 \pi f V}

See Craik, equation 4.20, page 100.

impedance_from[source]

Choses the right impedance of subsystem_from. Applies boundary conditions correction as well.

impedance_to[source]

Choses the right impedance of subsystem_from. Applies boundary conditions correction as well.

sound_reduction_index[source]

Sound reduction index.

R_{12} = 10 \log_{10}{\frac{1}{\tau_{12}}}

with:

  • transmission coefficient tau.

See Craik, equation 1.26, page 10.

tau[source]

Non-resonant transmission coefficient by Leppington et al (1987).

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