Lecturer(s): Jean-Jacques SINOU
Course ⋅ 16 hStudy ⋅ 12 h


When designing structures and mechanical systems, it is imperative to control the risks of instability arising from many phenomena. Mention may in particular be made of the various couplings of a non-conservative nature related to the existence of friction or of contact between a moving elastic structure and a fluid or a solid. Moreover, the phenomena of buckling and blistering are increasingly dimensioning given the lightening of the structures associated with the use of new materials. In the fields of transport, civil engineering and energy, we can cite: brake noise, resistance to crashes, instabilities of rotating machines, risk of building collapse, stability of drilling systems.


Stability, brake squeal, fluid-structure, rotating machines, aeroelastic coupling, hydro-elastic coupling


I. Introduction and illustration from industries II. Buckling of elastic structures III. Non-conservative elastic structures IV. Stability of mechanical systems and vibration V. Practical methodology in engineering and research units. VI. Applications to mechanical systems with friction and structures coupled with flow

Learning Outcomes

  • Develop a synthetic vision of the risks of instabilities of mechanical systems in the design process
  • Learn about computational tools to predict instabilities
  • Understand the coupling phenomena at the origin of the instabilities