Structural Dynamics & Acoustics
Ref: 2EL1810
Description
Vibrations and wave propagation play an key role in many areas: geophysics, behaviour of civil engineering structure subjected to wind, earthquakes or waves, stability and comfort of aeronautical and terrestrial vehicles. Acoustics is also essential in the transportation vehicles for both internal comfort and external noise.
The aim of this course is to provide students with essential knowledge, methods and tools for the analysis and quantification of these phenomena in structural dynamics and acoustics. It will be based on a set of case-studies to illustrate the fundamental concepts of resonance and radiation.
Quarter number
SG6
Prerequisites (in ters of CS courses)
It is strongly recommended to have followed the course of mechanics of continuous media or a course on waves.
Syllabus
- Dynamic response of an oscillator, principle of vibration reduction (Lecture)
- Mechanical and acoustic waves and resonances (Lecture and tutorial)
- Vibrations of beams (Lecture and tutorial)
- Construction
of reduced Multi-Degree-Of-Freedom models in dynamics (Lecture and
tutorial) & reminder on continuum mechanics ( self-taught)
- Dynamic response of a complex structure (Lecture & Case-study 1.1: building under wind and earthquake loads)
- Case-study 1.2 and 2.1 : building under wind and earthquake loads (Finite element models)
- Introduction to advanced dynamic models (Lecture and end of Case study 2.2)
- Acoustic radiation (Lecture and tutorial)
- Acoustic resonance (Lecture and tutorial)
- Case-study 3: Analysis of a scientific paper
- Final exam
Class components (lecture, labs,etc.)
Class : 8 slots
Tutorials : 5 slots
Hands-on : 6 slots + homework
Resources
Lectures will be given in French and recorded lectures in English will be made available to students.
Tutorial classes: 35 students with at least one tutorial in English and if more than 35 student a tutorial class in French.
Résultats de l'apprentissage couverts par le cours
Completing this course students will be able to:
- model the dynamic behaviour of structures using a relevant model : (3D , beams,...)-model the acoustic behaviour of an enclosure and the radiation patern of a acoustic source or an open system.
- model transient and random environmental loads (Wind , seism...)
- build a low frequency surrogate model to solve practical vibration or acoustic problems.
Course support, bibliography
Lecture notes +course slides + recorded lectures in English and in French