seapy.couplings.coupling.Coupling¶

class seapy.couplings.coupling.Coupling(name, system, **properties)[source]¶

Bases: seapy.base.Base

Abstract base class for couplings.

__init__(name, system, **properties)[source]¶

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.
`Coupling.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 eta.
`enabled`	Switch indicating whether the object is enabled.
`frequency`	Frequency.
`impedance_from`	Impedance of `subsystem_from` corrected for the type of coupling.
`impedance_to`	Impedance of `subsystem_to` corrected for the type of coupling.
`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`

__init__(name, system, **properties)[source]

Constructor.

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

clf[source]¶

Coupling loss factor eta.

Return type:	`numpy.ndarray`

In case the CLF is not specified for the given coupling it is calculated using the SEA consistency relation.

eta_{12} = eta_{21} frac{n_2}{n_1}

conductivity[source]¶

Conductivity of coupling.

$\omega n_i \eta_{i,j}$

with:

angular frequency $\omega$
modal density of subsystem i $n_i$
coupling loss factor of this coupling $\eta_{i,j}$

disable(subsystems=False)[source]¶

Disable this coupling. Optionally disable dependent subsystems as well.

Parameters:	subsystems (bool) – Disable subsystems

enable(subsystems=False)[source]¶

Enable this coupling. Optionally enable dependent subsystems as well.

Parameters:	subsystems (bool) – Enable subsystems

impedance_from[source]¶

Impedance of subsystem_from corrected for the type of coupling.

Return type:	`numpy.ndarray`

impedance_to[source]¶

Impedance of subsystem_to corrected for the type of coupling.

Return type:	`numpy.ndarray`

junction = None¶: Junction this coupling is part of.

mobility_from[source]¶

Mobility of subsystem_from corrected for the type of coupling.

Returns:	Mobility $Y$
Return type:	`numpy.ndarray`

mobility_to[source]¶

Mobility of subsystem_to corrected for the type of coupling.

Returns:	Mobility $Y$
Return type:	`numpy.ndarray`

modal_coupling_factor[source]¶

Modal coupling factor of the coupling.

Return type:	`numpy.ndarray`

$\beta_{ij} = \frac{ f * \eta_{ij} } { \overline{\delta f_i} }$

See Lyon, above equation 12.1.4

reciproce[source]¶

Reciproce or inverse coupling.

Returns:	Reciproce coupling if it exists, else None.

resistance_from[source]¶

Resistance of subsystem_from corrected for the type of coupling.

Returns:	Impedance $Z$
Return type:	`numpy.ndarray`

resistance_to[source]¶

Resistance of subsystem_to corrected for the type of coupling.

Returns:	Impedance $Z$
Return type:	`numpy.ndarray`

subsystem_from = None¶: Type of subsystem origin for coupling

subsystem_to = None¶: Type of subsystem destination for coupling

seapy.couplings.coupling.Coupling¶

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