Course detail

# Vibration and Noise of Vehicles

The course discusses the physical description of vibration and noise generation and propagation with reference to applications in the automotive industry. Emphasis is placed on understanding the physical nature of vibration and noise, measures leading to the reduction of negative effects, and analytical and numerical methods of solving this problem. The problematics are applied to the identification of sources of vibration and noise in motor vehicles, powertrains and rotating machinery.

Language of instruction

English

Number of ECTS credits

6

Mode of study

Not applicable.

Offered to foreign students

Of all faculties

Entry knowledge

Knowledge of mathematics taught at the bachelor’s degree level and necessarily includes linear algebra (matrices, determinants, systems of linear equations), differential and integral calculus and ordinary differential equations.

Knowledge of basic kinematics, dynamics and strength of materials.

Rules for evaluation and completion of the course

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 an oral part. The exam considers the work of the student in the exercise. The student has to score more than one-half of the points for the successful completion of the test.

Exercises are compulsory, the form of replacing the missed lessons is solved individually with the lecturer or with the course guarantor. Lectures are optional.

Aims

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.

The student will acquire the ability to critically evaluate the vibration and noise of motor vehicles and apply analytical, numerical and experimental methods. The student can apply these skills in the development of motor vehicles.

Study aids

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

DE SILVA C. W. Vibration and Shock Handbook. 1st Edition. Taylor and Francis Group. 2005. (EN)
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. (EN)
NGUYEN-SCHÄFER, Hung. Rotordynamics of Automotive Turbochargers. Second Edition. Ludwigsburg, Germany: Springer, 2015. ISBN 978-3-319-17643-7. (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)
NOVÝ R., KUČERA M. Snižování hluku a vibrací. Praha: Vydavatelství ČVUT Praha, 2009. (CS)
DE JALON, J., G. a E. BAYO. Kinematics and Dynamic Simulations of Multibody Systems The Real-Time Chalange. New York: Springer-Verlag, 1994. ISBN 978-1461276012. (EN)

eLearning

Classification of course in study plans

• Programme N-ADI-P Master's, 1. year of study, summer semester, compulsory
• Programme N-ENG-Z Master's, 1. year of study, summer semester, recommended
• Programme N-ENG-A Master's, 1. year of study, summer semester, compulsory-optional

#### Type of course unit

Lecture

26 hours, optionally

Teacher / Lecturer

Syllabus

1. Basic terms and quantities.
2. Description and processing of vibroacoustic signals.
3. Vibration of discrete systems.
4. Vibration of discrete systems and advanced problems.
5. Noise propagation through the acoustic domain.
6. Application of finite element method to dynamic problems.
7. Description of mechanical and aerodynamic sources of noise and vibration.
8. Vibration and noise of drivetrain components.
9. Vibration and noise of powertrain components.
10. Vibration and noise of powertrains.
11. Vibration and noise of drivetrains.
12. Vehicle vibration and noise.

Computer-assisted exercise

26 hours, compulsory

Teacher / Lecturer

Syllabus

1. Introduction of NVH methods and tools.
2. Processing of vibroacoustic signals obtained by measuring motor vehicles.
3. Analysis of motor vehicle vibration using analytical methods.
4. Analysis of turbocharger vibration using analytical methods.
5. Introduction of commercial FEA tools for solving dynamic problems.
6. FEM application for the solution of motor vehicle dynamics.
7. FEM application for modal structural analysis of gearbox housing.
8. FEM application for harmonic structural analysis of a chassis component.
9. FEM application for harmonic structural analysis of gearbox housing.
10. FEM application for modal acoustic analysis of tractor cab cavity.
11. FEM application for harmonic acoustic analysis of the turbocharger inlet duct cavity.
12. Identification of sources of motor vehicle vibration.

eLearning