All subjects regarding the pyva toolbox. The toolbox for vibroacoustic simulation.
The article reflecting the paper from Price and Crocker1 is out now. I nice reminder regarding the still ongoing and challenging discussion about how to correctly model double walls in SEA. The examples from the paper are presented as pyva example. In the low- and mid-frequency range the subsystems are strongly coupled. This strong coupling […]
JASA Article on Double Wall Simulation using SEA and Pyva Read More »
There is an ongoing discussion about if it is worth to implement the complicated Johnson-Champoux-Allard (JCA)[1] models or even the full Biot Model. Why not using the Delany-Bazley Model[3] or the modified version by Miki [4]. The Advantage of there empirical models is their simplicity, because the only parameter is the flow resistivity In the
Is the Delany-Bazley-Miki Model Precise Enough? Read More »
Introduction Area Junctions are special in SEA theory. For cavity-plate-cavity connections there are not only direct paths. This violates the principle SEA assumption that only connected subsystems can exchange energy An intrusive way to understand the different paths is the transmission formula from Cremer. and are mass per area, fluid density and speed of sound,
SEA Area Junctions Read More »
In many applications plates or impervious screen layers are perforated. That means there is a fraction of motion given by the flow through theperforation of the plate. This is done by using the perforation keyword in the definition of the related infiniteLayers class. Usually, a plate or mass layer is described by a transfer impedance
New release: pyva 1.2.2 can now handle plate perforation Read More »