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SD2140 Vibro Acoustics 8.0 credits

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.

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For course offering

Autumn 2024 Start 28 Oct 2024 programme students

Application code


Headings with content from the Course syllabus SD2140 (Spring 2022–) 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. Prediction models.

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

Literature and preparations

Specific prerequisites

Completed course SE1010 HSolid Mechanics

Completed course SF1633 Differential Equations I

Completed course SG1130 Mechanics I

Completed course  SG1140 Mechanics II

English B / English 6

Recommended prerequisites

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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


  • TEN1 - Examination, 8.0 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; 8 university credits).

Opportunity to complete the requirements via supplementary examination

No information inserted

Opportunity to raise an approved grade via renewed examination

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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

Main field of study

Mechanical Engineering

Education cycle

Second cycle

Add-on studies

SD2165 Acoustical Measurements
SD2150 Experimental Structure Dynamics
SD2155 Flow Acoustics
SD2175 Numerical Methods for Acoustics and Vibration
SD2180 Non-Linear Acoustics
SD2190 Vehicle Acoustics and Vibration


Romain Rumpler (