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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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
Course disposition
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
Equipment
Literature
Examination and completion
If the course is discontinued, students may request to be examined during the following two academic years.
Grading scale
Examination
- 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
Opportunity to raise an approved grade via renewed examination
Examiner
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 web
Further information about the course can be found on the Course web at the link below. Information on the Course web will later be moved to this site.
Course web SD2140Offered by
Main field of study
Education cycle
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