SD2140 Vibro Acoustics 8.0 credits

Strukturakustik

The course will provide information about how dynamic forces excite mechanical structures and how various responce wavetypes are transmitted through structures. Finally, the mechanism of acoustic energy radiation from these vibrating structures is examined.

  • Education cycle

    Second cycle
  • Main field of study

    Mechanical Engineering
  • Grading scale

    A, B, C, D, E, FX, F

Course offerings

Autumn 19 for programme students

Autumn 18 for programme students

Intended learning outcomes

Vibrations are often generated by dynamical and acoustical forces exciting large complex constructions. The aim of the course is to illustrate how these disturbances are excited and how the mechanical energy is transmitted by various wave types in and between structures, how various wave types interact and finally how acoustical energy is radiated from a structure to a surrounding fluid.

Students graduating from the course shall be able to:

  • Explain free and forced vibrations of a system
  • Discuss and explain how a structure can be excited
  • Discuss models for energy flow between structural elements
  • Explain the response of a structure excited by a harmonic or random forces
  • Explain kinetic and potential energy of a structure as function of the input power to the system
  • Discuss some possible methods for the reduction of the transmission of structure-borne sound to a mechanical system
  • Use some different methods for the prediction of the response of a structure

Course main content

Wave types in solids. Excitation of vibrations. Modes of vibrations in solids. The mobility concept. Wave propagation and attenuation. Transmission between structures. Acoustical radiation from transmission through structures. Prediction models.

Eligibility

Basic courses in mathematics, mechanics.

Literature

Nilsson, A. Vibroacoustics Part I och Part II. (In English)

Examination

  • TEN1 - Examination, 8.0, grading scale: A, B, C, D, E, FX, F

Requirements for final grade

Written examination (TEN1; 8 university credits).

Offered by

SCI/Aeronautical and Vehicle Engineering

Contact

Ines Lopez Arteaga (inesla@kth.se)

Examiner

Ines Lopez Arteaga <inesla@kth.se>

Add-on studies

SD2165 Acoustical Measurements
SD2150 Experimental Structure Dynamics
SD2155 Flow Acoustics
SD2160 Sound and Vibration, Project Course
SD2170 Energy Methods
SD2175 Numerical Methods for Acoustics and Vibration
SD2180 Non-Linear Acoustics
SD2185 Ultrasonics
SD2190 Vehicle Acoustics and Vibration

Version

Course syllabus valid from: Autumn 2007.
Examination information valid from: Autumn 2007.