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VERSION:2.0
PRODID:www.imperial.ac.uk
BEGIN:VEVENT
UID:641d90e7b1fd8
DTSTART:20230202T140000Z
SEQUENCE:0
TRANSP:OPAQUE
DTEND:20230202T150000Z
URL:https://www.imperial.ac.uk/events/157676/crack-nucleation-in-variationa
l-phase-field-models-of-brittle-fracture/
LOCATION:Skempton Room 064A\, Skempton Building\, South Kensington Campus\,
Imperial College London\, London\, SW7 2AZ\, United Kingdom
SUMMARY:Crack nucleation in variational phase-field models of brittle fract
ure
CLASS:PUBLIC
DESCRIPTION:Crack nucleation in variational phase-field models of brittle f
racture \nCorrado Maurini\nd’Alembert Institute\nSorbonne Université\n
Paris\, France\nSummary\nPhase-field approaches model sharp cracks as the
localisation of a smooth damage field. Their success is due to their abili
ty to predict the nucleation and propagation of complex crack patterns wit
hout ad-hoc hypotheses. My talk will focus on the problem of crack nucleat
ion. First\, I will introduce the variational formulation of phase-field m
odels as the quasi-static evolution of softening gradient damage models in
cluding an internal length-scale. In this framework\, I will show how crac
k nucleation can be understood as the results of a structural instability
and present the methods to study it theoretically and numerically. I will
argue that classical phase-field model can correctly predict the material
strength and toughness in the case of almost uniaxial loadings. Hence\, I
will discuss the difficulties in the case of multi-axial loadings\, where
the strength is a hyper-surface in the stress space.\nSpeaker Biography\nD
r Corrado Maurini is a Full Professor of Solid Mechanics in the d’Alembe
rt Institute (http://www.dalembert.upmc.fr/ijlrda/) at Sorbonne Universit
é in Paris\, France. He earned a Ph.D. degree in Mechanics from Universit
y of Rome La Sapienza and Paris 6 – Pierre and Marie Curie University in
2005\, after Master degrees from La Sapienza and Virgina Tech. His resear
ch interests are in theoretical and computational nonlinear solid mechanic
s and instabilities\, and in particular on fracture and damage\, phase-fie
ld models of fracture\, nonlinear elasticity\, plates and shells\, morphin
g structures and active materials. His current work on crack nucleation in
variational models of fracture is partially founded by the European Commi
ssion under the Marie Skłodowska-Curie Action Newfrac\, Grant Agreement n
° 861061ITN (https://www.newfrac.eu/)
X-ALT-DESC;FMTTYPE=text/html:**Crack nucleation in variational ph
ase-field models of brittle fracture **

\nCorrado Ma
urini

\nd’Alembert Institute

\nSorbo
nne Université

\nParis\, France

\n**Summary**

\nPhase-field approaches model sharp crack
s as the localisation of a smooth damage field. Their success is due to th
eir ability to predict the nucleation and propagation of complex crack pat
terns without ad-hoc hypotheses. My talk will focus on the problem of crac
k nucleation. First\, I will introduce the variational formulation of phas
e-field models as the quasi-static evolution of softening gradient damage
models including an internal length-scale. In this framework\, I will show
how crack nucleation can be understood as the results of a structural ins
tability and present the methods to study it theoretically and numerically
. I will argue that classical phase-field model can correctly predict the
material strength and toughness in the case of almost uniaxial loadings. H
ence\, I will discuss the difficulties in the case of multi-axial loadings
\, where the strength is a hyper-surface in the stress space.

\n
**Speaker Biography**

\nDr
Corrado Maurini is a Full Professor of Solid Mechanics in the d’Alembert
Institute (http://www.da
lembert.upmc.fr/ijlrda/) at Sorbonne Université in Paris\, France. He
earned a Ph.D. degree in Mechanics from University of Rome La Sapienza an
d Paris 6 – Pierre and Marie Curie University in 2005\, after Master deg
rees from La Sapienza and Virgina Tech. His research interests are in theo
retical and computational nonlinear solid mechanics and instabilities\, an
d in particular on fracture and damage\, phase-field models of fracture\,
nonlinear elasticity\, plates and shells\, morphing structures and active
materials. His current work on crack nucleation in variational models of f
racture is partially founded by the European Commission under the Marie Sk
łodowska-Curie Action Newfrac\, Grant Agreement n° 861061ITN (https://www.newfrac.eu/)

DTSTAMP:20230324T120039Z
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