GDR MePhy

Instabilities in Solid Mechanics

The aim of this workshop was to bring together and foster the discussion between communities dealing with instabilities in Solid Mechanics. The research on instabilities in Solid Mechanics is very currently very active: In some cases, the aim is to determine, prevent or control the stability of a system; In a different stream of research, the idea is to use an unstable behaviour (to trigger a spatial pattern, or a non-linear mechanical response).

Le but de ces journées était de faire le point sur les études actuelles de stabilité de systèmes en mécanique des solides. Il s’agit tout d’abord de caractériser ou détecter une perte de stabilité et le mode instable correspondant, et éventuellement de contrôler ou de retarder l’instabilité. Mais on peut aussi chercher à utiliser une instabilité pour permettre d’actionner, d’imposer un motif particulier, de modifier la réponse non-linéaire, etc..

The workshop will be held in english.

When, where?

may 16th 2018,

campus Jussieu Amphiteatre Durand (Bulding Esclangon)

4 place Jussieu, 75005 Paris

Download the campus map.

Find your itineray in Paris public transportation.

Programme / Program

Download the program (pdf)

Presentations are 12mn  long (+ 3mn questions)

• 10h15-10h45 :                         Welcome coffee
• 10h45- 11h15 :  Nick Triantafyllidis    Stability problems in mechanics : Multiphysics and Multiscale aspects

• 11h15-12h30 :                        Buckling Instabilities

  • David Robinson The Effects of Nonlinear Bending on the Wrinkling of Thin Elastic Sheets
  • Tomohiko Sano Twist-induced snap-buckling in a bent elastic ribbon
  • Emmanuel Siefert Instabilities in pneumatic actuated plates
  • Kostas Danas Instabilities in magnetorheological elastomers
  • Paul Grandgeorge Surface-tension induced buckling of thin fibrous membranes for the design of stretchable materials
• 12h30-14h00 : lunch break (PMMH lab) – short visit PMMH
• 14h00-15h00              Shells
  

  • Matteo Pezzulla Curvature-Induced Instabilities of Shells
  • Corrado Maurini Piezoelectric shape control of a neutrally stable shell
  • Anna Lee  Defect-controlled buckling of depressurized elastic shells
  • Dong Yan Buckling of Spherical Shells Containing a Thickness Defect
• 15h-15h30                  Buckling and delamination
  
  • Etienne Barthel Buckling instabilities of thin films: interface properties and blister morphologies
  • Franck Vernerey Rate control of blister instabilities in soft matter
• 15h30-16h00               Coffee break
• 16h-17h                        Material instabilities
  • Christelle Combescure  Local vs Global instabilities in metamaterials, the importance of modeling joints
  • Laurent Guin  Stability of vicinal surfaces: beyond the quasi-static approximation
  • Anne Tanguy   Instability and plasticity  in sodo-silicate glass
    
  • Laurent Ponson    Localisation and fracture under compression
    

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