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SUMMARY:Phase field modelling of crack propagation - Dr Emilio Martinez-Pa
 neda\, CUED
DTSTART:20190215T140000Z
DTEND:20190215T143000Z
UID:TALK118459@talks.cam.ac.uk
CONTACT:Hilde Hambro
DESCRIPTION:*Abstract:*\n\nThe phase field method for fracture has emerged
  as a promising numerical framework to model crack nucleation and growth. 
 Among other possibilities\, the method has proven to be capable of capturi
 ng complex crack propagation paths\, crack branching\, crack nucleation fr
 om arbitrary locations\, and merging of two or more cracks. All of these f
 eatures can be modelled within the original finite element mesh and in com
 plex 3D topologies\, overcoming some of the limitations intrinsic to discr
 ete computational fracture methods. Not surprisingly\, the phase field fra
 cture method has gained immediate traction in the computational mechanics 
 community and it has been applied to model numerous brittle and ductile da
 mage phenomena\, including hydraulic fracturing\, fibre cracking\, composi
 tes delamination and stress corrosion cracking\, to name a few. \n\nIn the
  talk\, I will: (i) introduce the basic theoretical foundations of the met
 hod and its connections to Griffith’s fracture framework\, (ii) outline 
 the implementation in a finite element context\, and (iii) showcase its po
 tential by addressing several engineering applications. Specifically\, I w
 ill show how we have extended the method to capture brittle fracture in fu
 nctionally graded composites [1]\, and present a novel multiphysics framew
 ork to predict hydrogen assisted cracking in a coupled deformation-diffusi
 on-phase field fracture fashion [2]. The finite element codes developed ar
 e available for download in https://www.empaneda.com/codes.\n\n*References
 *\n\n[1] Hirshikesh\, S. Natarajan\, R.K. Annabattula\, E. Martínez-Pañe
 da. Phase field modelling of crack propagation in functionally graded mate
 rials (in review)\n\n[2] E. Martínez-Pañeda\, A. Golahmar\, C. F. Niords
 on. _A phase field formulation for hydrogen assisted cracking_. Computer M
 ethods in Applied Mechanics and Engineering *342*\, 742-761 (2018)\n\n*Abo
 ut the speaker:*\n \nEmilio Martínez Pañeda is an 1851 Research Fellow a
 t the University of Cambridge and a Junior Research Fellow at Wolfson Coll
 ege. His current research interests lie in the field of applied mechanics\
 ; more specifically in plasticity\, fracture mechanics\, coupled diffusion
 -deformation theories\, and mechanism-based models for damage. His work on
  the mechanics of solids has been disseminated in numerous journal publica
 tions and has been recognized through several awards\, including the Acta 
 Student Award\, the Springer PhD Thesis Prize and the Extraordinary Doctor
 al Prize for the Best PhD Thesis in Engineering. More info: https://www.em
 paneda.com\n
LOCATION:Oatley Seminar Room\, Department of Engineering
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