Vibration and Noise of Vehicles
FSI-QDZAcad. year: 2017/2018
The subject should serve as an introduction of the most important problems of noise, vibration and harshness applied on motored vehicles. There are presented current calculation models and experimental methods used in the development of state-of-the-art powertrains and vehicles to the students. The emphasis is laid upon the mathematical and physical foundations of calculation models and the respective software as well as the verification of results of the computer modelling by way of appropriate experimental methods. There are presented examples of noise and vibration solutions like acoustic sources, acoustic properties of vehicle components, passive or active methods for noise decrease.
Learning outcomes of the course unit
The course gives students the opportunity to learn about current computational models, applied at motor vehicles and powertrain development. Students will gain the knowledge about the up-date numerical methods applied for a solution of noise and vibration problems.
Matrix calculus, differential and integral calculus, differential equations. Technical mechanics, kinematics, dynamics, elasticity and strength. Fourier analysis and Fourier transformation.
- compulsory co-requisite
Recommended optional programme components
Recommended or required reading
BRUEL & KJAER. Noise Control. 2nd ed. Naerum, Norsko: Bruel & Kjaer, 1986. ISBN 8787355094. (EN)
NGUYEN-SCHÄFER, Hung. Aero and Vibroacoustics of Automotive Turbochargers. 1. Stuttgart, Germany: 3, 2013. ISBN 978-3-642-35069-6. (EN)
SMETANA, C. et al. Hluk a vibrace: měření a hodnocení. Praha: Sdělovací technika, 1998. ISBN 80-901936-2-5. (CS)
BROCH, J. T. Mechanical Vibrations and Shock Measurement. Naerum, Norsko: Bruel&Kjaer, 1984. ISBN 87 87355 361. (EN)
NOVÝ R., KUČERA M. Snižování hluku a vibrací. Praha: Vydavatelství ČVUT Praha, 2009.
Planned learning activities and teaching methods
The course is taught through lectures explaining the basic principles and theory of the discipline. Exercises are focused on practical topics presented in lectures.
Assesment methods and criteria linked to learning outcomes
The course-unit credit requirements:
The orientation at physical fundamentals of presented problems and the knowledge of practical solving methods , leading to individual work especially on a diploma thesis and in engineering practice after completing studies. The ability to solve problems using computer technology and necessary advanced software equipment. Students have to individually elaborate assigned tasks without significant mistakes. Together with evaluating them the continuous study checking is carried out.
The course is concluded by a final test, as well as oral discussion.
Final evaluation consists of:
1. Evaluation of the individual work on seminars (individually elaborated tasks).
2. The results of written and oral parts of the exam.
Language of instruction
The objective of the course is to make students familiar with state-of-the-art of noise and vibration for solving various problems at motor vehicles and powertrain development. The aim of the subject is to explain to students mathematical and physical fundamentals of computational models that are built up to ready-to-use software level for various problems.
Specification of controlled education, way of implementation and compensation for absences
The form of fulfilment by relevant reasons missed lessons is solved individually with subject guarantee person.
Type of course unit
13 hours, optionally
Teacher / Lecturer
1. Noise and vibration introduction
2. Fundamentals of numerical methods
3. Finite Element Method
4. Finite Element Method in dynamics I.
5. Finite Element Method in dynamics
6. Fundamentals of experimental methods
13 hours, compulsory
Teacher / Lecturer
1. Finite element Method – modal analysis
2. Finite element Method – harmonic analysis
3. Finite element Method – acoustic analysis
4. Finite element Method – coupled acoustic-structural analysis
5. Application of Multibody dynamics in acoustic
6. Application of experimental methods