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SD2145 Vibro-Acoustics 11.0 credits

Administer About course

Course offerings are missing for current or upcoming semesters.
Headings with content from the Course syllabus SD2145 (Autumn 2007–) are denoted with an asterisk ( )

Content and learning outcomes

Course contents

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. Room acoustics.Prediction models. Variational calculus. Dynamics of sandwich elements.

Intended learning outcomes

Vibrations are often generated by dynamical forces acting on 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 wavetypes in and between structures, how wave types interact and finally how acoustical energy is radiated 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

Literature and preparations

Specific prerequisites

Basic courses in fundamentals of noise and vibration control.

Recommended prerequisites

No information inserted

Equipment

No information inserted

Literature

Nilsson, A. Vibro-Acoustics Part I to III

Examination and completion

If the course is discontinued, students may request to be examined during the following two academic years.

Grading scale

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

Examination

  • TEN1 - Examination, 11.0 credits, grading scale: A, B, C, D, E, FX, F

Based on recommendation from KTH’s coordinator for disabilities, the examiner will decide how to adapt an examination for students with documented disability.

The examiner may apply another examination format when re-examining individual students.

Other requirements for final grade

Written examination (TEN1; 11 university credits).

Opportunity to complete the requirements via supplementary examination

No information inserted

Opportunity to raise an approved grade via renewed examination

No information inserted

Examiner

Profile picture Svante Finnveden

Ethical approach

  • All members of a group are responsible for the group's work.
  • In any assessment, every student shall honestly disclose any help received and sources used.
  • In an oral assessment, every student shall be able to present and answer questions about the entire assignment and solution.

Further information

Course room in Canvas

Registered students find further information about the implementation of the course in the course room in Canvas. A link to the course room can be found under the tab Studies in the Personal menu at the start of the course.

Offered by

SCI/Aeronautical and Vehicle Engineering

Main field of study

This course does not belong to any Main field of study.

Education cycle

Second cycle

Add-on studies

SD2130 Signal Analysis
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