Course detail

Vibration and Noise of Vehicles

FSI-QDZ-A Acad. year: 2024/2025 Summer semester

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

Supervisor

prof. Ing. Pavel Novotný, Ph.D.

Department

Institute of Automotive Engineering

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.

The study programmes with the given course

Programme N-AAE-P: Advanced Automotiv Engineering, Master's, compulsory-optional

Programme N-ADI-P: Automotive and Material Handling Engineering, Master's, compulsory

Programme N-ENG-A: Mechanical Engineering, Master's, compulsory-optional

Type of course unit

 

Lecture

26 hours, optionally

Syllabus


  1. Basic terms and quantities in vibroacoustic analyses

  2. Description and processing of vibroacoustic signals with a focus on motor vehicles

  3. Vibration of discrete systems with application to motor vehicles

  4. Vibration of discrete systems and specific problems of motor vehicles

  5. Application of finite element method to dynamic problems

  6. Noise propagation through acoustic domain

  7. Description of mechanical and aerodynamic sources of noise and vibration

  8. Vibration and noise of drivetrain components

  9. Vibration and noise of high-speed rotating machines

  10. Vibration and noise of powertrains

  11. Vibration and noise of vehicle drivetrains

  12. Vibration and noise of vehicles due to aerodynamics and interactions with the road

  13. Vibration and noise of electric vehicles

Computer-assisted exercise

26 hours, compulsory

Syllabus


  1. Introduction of NVH methods and tools

  2. Processing of vibroacoustic signals obtained by measuring motor vehicles

  3. Analysis of motor vehicle vibrations using analytical methods

  4. Analysis of turbocharger rotor vibrations using analytical methods

  5. Presentation of commercial FEA tools for solving dynamic problems

  6. Application of FEM for modal structural analysis of vehicle components

  7. Application of FEM for modal structural analysis of drivetrain components

  8. Creation of reduced elastic body for dynamic analysis

  9. Application of FEM for harmonic structural analysis of drivetrain components

  10. Application of FEM for harmonic structural analysis of vehicle components

  11. FEM application for modal acoustic analysis of the tractor cabin cavity

  12. FEM application for harmonic acoustic analysis of the inlet pipe cavity

  13. Analysis of vehicle vibrations and noise using FEM and analytical methods