Vibration and Noise of Vehicles (FSI-QDZ-A)

Academic year 2021/2022
Supervisor: prof. Ing. Pavel Novotný, Ph.D.  
Supervising institute: ÚADI all courses guaranted by this institute
Teaching language: English
Aims of the course unit:
The objective of the course is to make students familiar with state-of-the-art of noise and vibration and enable the solution of various problems of motor vehicles by computational and experimentational methods.
Learning outcomes and competences:
The course gives students the opportunity to learn about current computational models, applied at motor vehicle development. Students will gain the knowledge about the up-date numerical methods applied for a solution of noise and vibration problems.
Prerequisites:
Matrix calculus, differential and integral calculus, differential equations. Kinematics, Dynamics and Strength of Materials. Fourier analysis and Fourier transformation.

Links to other subjects:
compulsory co-requisite: Tractors [QT]
Course contents:
The subject should serve as an introduction of the most important problems of noise, vibration and harshness applied on motored vehicles. Current computational and experimental methods used in the development of motor vehicles are presented 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. Selected examples of application of the subject matter in technical practice are also presented.
Teaching methods and criteria:
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 is conditioned by active participation in the seminars, proper preparation of the semester work and fulfilment of the conditions of the control tests. The exam verifies the knowledge gained during lectures and seminars and is divided into a written theoretical part, part of the computational solution of vibrations and noise and oral part. The exam considers the work of the student in the exercise. The student has to score more than one half of points for the successful completion of the test.
Controlled participation in lessons:
The form of replacement of missed lessons is solved individually with the guarantee person of the subject.
Type of course unit:
    Lecture  13 × 2 hrs. optionally                  
    Computer-assisted exercise  13 × 2 hrs. compulsory                  
Course curriculum:
    Lecture 1. Fundamentals of vibrations.
2. The vibration of the system with one degree of freedom.
3. Vibration of non-linear systems and systems with multiple degrees of freedom.
4. Fundamentals of finite element method and commercial systems.
5. Application of the finite element method to dynamic tasks.
6. Description of sound sources and sound propagation through acoustic domain.
7. Processing of vibroacoustic signals.
8. Experimental methods for vibration determination.
9. Experimental methods for noise determination.
10. Vibration and noise sources on the vehicle I.
11. Vibration and noise sources on the vehicle II.
12. Vibration and noise sources on the vehicle III.
13. Solution applications of vibration and noise issues.
    Computer-assisted exercise 1. Vibration of the system with one degree of freedom.
2. Application of finite element method – modal analysis.
3. Application of finite element method – harmonic analysis.
4. Application of finite element method – analysis of acoustic system.
5. Calculation of hybrid powertrain excitation.
6. Experimental methods for vibration and noise determination.
Literature - fundamental:
1. DE SILVA C. W. Vibration and Shock Handbook. 1st Edition. Taylor and Francis Group. 2005.
2. NORTON, M. P. and D. G. Karczub. Fundamentals of Noise and Vibration Analysis for Engineers. Cambridge University Press, second edition, 2004. ISBN 978-0-521-49561-6.
3. NGUYEN-SCHÄFER, Hung. Rotordynamics of Automotive Turbochargers. Second Edition. Ludwigsburg, Germany: Springer, 2015. ISBN 978-3-319-17643-7.
Literature - recommended:
1. NGUYEN-SCHÄFER, Hung. Aero and Vibroacoustics of Automotive Turbochargers. 1. Stuttgart, Germany: 3, 2013. ISBN 978-3-642-35069-6.
2. SMETANA, C. et al. Hluk a vibrace: měření a hodnocení. Praha: Sdělovací technika, 1998. ISBN 80-901936-2-5.
3. NOVÝ R., KUČERA M. Snižování hluku a vibrací. Praha: Vydavatelství ČVUT Praha, 2009.
The study programmes with the given course:
Programme Study form Branch Spec. Final classification   Course-unit credits     Obligation     Level     Year     Semester  
N-ENG-A full-time study --- no specialisation -- Cr,Ex 6 Compulsory-optional 2 1 S
N-ADI-P full-time study --- no specialisation -- Cr,Ex 6 Compulsory 2 1 S
N-ENG-Z visiting student --- no specialisation -- Cr,Ex 6 Recommended course 2 1 S
N-ENG-Z visiting student --- no specialisation -- Cr,Ex 6 Recommended course 2 2 S