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BEGIN:VEVENT
UID:0-591@lptms.universite-paris-saclay.fr
DTSTART:20180412T110000Z
DTEND:20180412T113000Z
DTSTAMP:20180326T074953Z
URL:https://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lpt
 ms-corrado-rainone-seminaire-exceptionnel/
SUMMARY:Séminaire du LPTMS: Corrado Rainone *** séminaire exceptionnel **
 * - LPTMS\, salle 201\, 2ème étage\, Bât 100\, Campus d'Orsay - 12 Avr 
 18 11:00
DESCRIPTION:Mechanical Failure in Amorphous Solids: Scale Free Spinodal Cri
 ticality\nCorrado Rainone (Dpt of Chemical and biological physics\, Weizma
 nn Institute of Science\, Israël)\nThe mechanical failure of amorphous me
 dia is a ubiquitous phenomenon from material engineering to geology. It ha
 s been noticed for a long time that the phenomenon is "scale-free"\, indic
 ating some type of criticality. In spite of attempts to invoke "Self-Organ
 ized Criticality"\, the physical origin of this criticality\, and also its
  universal nature\, being quite insensitive to the nature of microscopic i
 nteractions\, remained elusive. Recently we proposed that the precise natu
 re of this critical behavior is manifested by a spinodal point of a thermo
 dynamic phase transition. Moreover\, at the spinodal point there exists a 
 divergent correlation length which is associated with the system-spanning 
 instabilities (known also as shear bands) which are typical to the mechani
 cal yield. Demonstrating this requires the introduction of an "order param
 eter" that is suitable for distinguishing between disordered amorphous sys
 tems\, and an associated correlation function\, suitable for picking up th
 e growing correlation length. The theory\, the order parameter\, and the c
 orrelation functions used are universal in nature and can be applied to an
 y amorphous solid that undergoes mechanical yield. Critical exponents for 
 the correlation length and the system size dependence are estimated. We co
 nclude with some perspectives and modelling ideas on the subject.\n\nRéf:
 \n\n 	Itamar Procaccia\, Corrado Rainone\, and Murari Singh\, Mechanical f
 ailure in amorphous solids: Scale-free spinodal criticality\, Phys. Rev. E
  96\, 032907 (2017)\n
LOCATION:LPTMS\, salle 201\, 2ème étage\, Bât 100\, Campus d'Orsay\, 15 
 Rue Georges Clemenceau\, Orsay\, 91405\, France
GEO:48.698185;2.181768
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=15 Rue Georges Clemenceau\,
  Orsay\, 91405\, France;X-APPLE-RADIUS=100;X-TITLE=LPTMS\, salle 201\, 2è
 me étage\, Bât 100\, Campus d'Orsay:geo:48.698185,2.181768
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