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Applied Finite Element Method in Vibroacoustics

Module MW2342

This Module is offered by Chair of Vibro-Acoustics of Vehicles and Machines (Prof. Marburg).

This module handbook serves to describe contents, learning outcome, methods and examination type as well as linking to current dates for courses and module examination in the respective sections.

Module version of WS 2016/7

There are historic module descriptions of this module. A module description is valid until replaced by a newer one.

Whether the module’s courses are offered during a specific semester is listed in the section Courses, Learning and Teaching Methods and Literature below.

available module versions
SS 2018WS 2016/7

Basic Information

MW2342 is a semester module in German language at Master’s level which is offered in winter semester.

This module description is valid from WS 2016/7 to SS 2022.

Total workloadContact hoursCredits (ECTS)
150 h 45 h 5 CP

Content, Learning Outcome and Preconditions


This course focuses on the application of the finite element method (FEM) to vibroacoustic analysis.
The vibroacoustic problem are structural-acoustic systems which deal with the bilateral interaction of compressible fluids (e.g. air) and elastic structures, known as Fluid-Structure Interaction (FSI). It concerns with noise and vibration of structural systems coupled with external and/or internal acoustic fluids. Typical applications are aerospace, automotive and railway industries and noise reduction in household devices.
Analytical solutions of vibroacoustic problems are only available for simple and classical cases. For that reason, FEM has become an important and very powerful numerical technique for solving such problems. Following topic will be presented during the lectures:
1.Introduction to FEM
2.Theory of vibroacoustic
3.FEM for:
•Structural dynamics ( modal, harmonic and transient analysis)
•Duct’s acoustic
•Rigid-walled cavity
•Damped vibroacoustic problems
•Sound absorption problems
4.Industrial applications

Learning Outcome

Upon successful completion of this course, the student will be able to understand and analysing vibroacoustic problems and applying FEM and learning related critical and practical issues to the vibroacoustic problems. They will be able to use ANSYS and MATLAB for evaluating practical problems.


Engineering Mechanics 3

Courses, Learning and Teaching Methods and Literature

Learning and Teaching Methods

In this course, at first an introduction to FEM and the theory of vibroacoustic problems will be presented. The most lectures are given on the applied and practical issues relating FEM modeling of the vibroacoustic problems using commercial software ANSYS and MATLAB. There will be practical exercises for each two lecture in which students attend to solve step to step FEM problems in vibroacoustic.
In the lecture, training content is taught based on lectures and writings on the whiteboard as well as by using tablet PC and projector. The numerical fundamentals of FEM are derived and the power of the methods based on practical, vibroacoustic problems is demonstrated. Intermediate steps such as results can be visualized by commercial or free software in order to support the understanding.
The exercise will be held as a computer lab with work in Matlab and Ansys.


Presentation, PC and projector, panel painting and computer work


Will be announced in the first lecture.

Module Exam

Description of exams and course work

The course grading is based on oral/written exam (20 or 90 min) and project report.

1 - Exam (50%): the exam type (oral or written) depends on the number of participants. The oral type (20 min.) can take place if the number of participants be less than 10, otherwise the written exam (90 min.) will take place.
Permitted aid: calculator.

2 - Projects (50%): There will be two projects to be performed using MATLAB or ANSYS (or other codes). Project reports (up to 5 pages) have to be submitted electronically. The students have to show that they can apply FEM program to solve acoustic problems in practice. The students have to show that they can apply FEM programs to solve acoustic problems in practice.

The examination parts must not be passed individually. The final grade is calculated from the total score of the individual parts of the examination.

Exam Repetition

There is a possibility to take the exam in the following semester.

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