Course content
Intended learning outcome: The students are able to
- name the relevant physical foundations of structure borne sound with respect to generic oscillating systems.
- recall the working principles of the interaction of airborne and structure borne sound.
- theoretically and practically apply passive noise mitigation measures to a given problem description.
- compare the effect of different passive measures for reducing structure borne sound using a practical example.
- develop solutions for the design of low-noise technical products.
- apply design guidelines for acoustical design in the early phase of product development to exemplary constructions.
- evaluate noise protection measures in relation to a practical example.
- conduct modelling and computations of various practical problems using a given numerical tool.
- derive meaningful insights of a systems acoustic behavior on the basis of results obtained from computations.
Module content:
- Fundamentals and Definitions: Basic acoustical knowledge and mathematical modelling.
- Modelling and Simulation: Modelling of acoustic problems, simulation process, and introduction to the major numerical methods of acoustics.
- Finite Element Method (FEM): Introduction to FEM, FEM modelling of fluid domain, structural domain and coupled problems, level of finite element discretization, FEM for free field/radiation problems, free field boundary conditions, mathematical formulation of plate, damping models, fluid-structure interaction, and application examples.
- Boundary Element Method (BEM): Introduction to BEM, BEM modelling, mathematical formulation, uniqueness of BEM, strategies to overcome non-uniqueness, and application examples.
- Geometrical Methods: Introduction to major geometrical methods of Mirror Image Source Method (MISM), Ray Tracing Method (RTM), and application examples.
- Statistical Energy Analysis (SEA): Introduction to SEA, basic parameters of SEA, and application examples.
- Hybrid Methods: Motivation for hybrid methods. Coupling of methods: FEM-BEM, FEM-Scaled Boundary FEM, BEM-RTM, RTM-FEM, CFD-FEM/BEM, SEA-FEM, and application examples.
- Parameter Identification and Validation: Introduction to parameter identification, validation, validation criteria, and verification.
