Toolbox description

This section introduces the modules and sub-packages of pyva from the simulation perspective. It presents each module in the context of its simulation purpose.

Overview of pyva sub-packages and modules

The toolbox is organised in accordance with the setup of vibroacoustic systems. The top level module of the pyva package is the pyva.models module providing methods and classes for the joined [All2009] of deterministic and random systems.

All sub-packages and their included modules populate the database to describe the systems or to provide classes and methods to simulate the dynamics and coupling of systems. This includes the physical models but also data structures to efficiently handle system matrices, vectors and degrees of freedom.

This section gives an overview about the functionality and features of the implemented modules and classes. For details of classes, methods and attributes please refer to the API section API, for the application of the classes in a simulation context you should refer to the Creating Models section of the User guide

• Models module
  • Finite Element Model (FEM)
  • Vibro Acoustic Model VAmodel
  • HybridModel
  • Transfer matrix model
    • The Allard matrix
• Properties package
  • Materials
    • Fluids
    • Air properties under specific atmospheric conditions
    • Equivalent fluids
    • Isotropic solid material
  • Geometrical properties
  • Structural properties
    • Beam properties
    • Plate properties
  • Poroelastic Materials
• Systems package
  • SEA_system
  • Acoustic Systems
    • One dimensional acoustic systems
      • Acoustic tubes
      • Lumped acoustic systems
      • Mass, stiffness (and damping) layer
      • Membrane
      • Perforated layer
      • Helmholtz resonator
      • Quarter wave resonator
    • Three dimensional acoustic systems
  • Structure Systems
    • One-dimensional structural systems
    • Two-dimensional structural systems
      • Generic two-dimensional plate system
      • The Rectangular Plate
  • Special systems
    • Acoustic radiators
• Infinite Layers
  • Acoustic Layer
    • Mass Layer
    • Plate Layer
    • Fluid Layer
    • Fluid Layer Honeycomb
  • Solid Layer
  • Impervious Screen
  • Poroelastic Layer
  • Use perforation at all plate-like infinite layers
  • Coupling transfer matrices
    • Two layers of the same nature
    • Two layers of the different nature
      • Solid-Fluid Interface
• Coupling package
  • Connections
  • Junctions
    • Line Junction
    • Area Junction
    • Hybrid area junction
    • Semi infinite fluid
• Geometry package
  • Mesh classes
• Data package
  • DOFtype
  • Degree of freedom DOF
  • DataAxis
  • Signal
  • LinearMatrix
  • DynamicMatrix