© 2011 ANSYS, Inc. March 4, 2014 1

Table Of Contents

Acoustics ACTx R150

© 2011 ANSYS, Inc. March 4, 2014 2

Table Of Contents

1. Introduction to Acoustics L1 • Acoustics ACTx L1-1

• Introduction to Acoustics L1-2

• Governing Equations L1-3

• Analyses Types L1-4

• Acoustic Material Properties L1-5

• Non-Uniform Acoustic Media L1-6

• Mesh Requirement L1-7

• Solving Fluid-Structure Interaction L1-8

• Automatic creation of BC L1-9

• Applications L1-10

2. Modal Analyses L2 • Applying Impedance Boundary L2-1

• Fluid Structure Interaction L2-2

• Eigensolvers L2-3

• Sloshing L2-4

• Postprocessing L2-5

3. Harmonic Analyses L3

• Harmonic response of a tube L3-1

• Defining Acoustic Excitations L3-2

• Defining Acoustic Boundary Conditions L3-3

• Scattering L3-4

• Wave Absorption Conditions L3-5

• Equivalent Perforated Material L3-6

• Viscous-Thermal Models L3-7

• Transfer Admittance Matrix L3-8

• Fluid Structure Interaction L3-9

• Analysis Settings L3-10

• Postprocessing L3-8

4. Transient Analyses L4 • Boundary conditions & Loads L4-1

• Wave Absorption Conditions L4-2

• Fluid Structure Interaction L4-3

• Analysis Settings L4-4

• Postprocessing L4-5

5. Advanced Applications L5 • Linear Perturbation L5-1

• One Way Coupling L5-2

6. Appendix L6 • Piezoelectric Vibro-acoustics L6-1

• Motor Noise Using Maxwell L6-2