[Dottorcomp] METaL seminars: Mathematics & Engineering Talks And Lectures

[Siam Student Chapter]

Dear all,

We're pleased to invite you to our upcoming series of seminars, *METaL
- Mathematics & Engineering Talks And Lectures*, hosted by the SIAM Student
Chapter of Pavia in collaboration with the Compmech group ar DICAr.

*What is METaL?**: *The METaL seminar cycle is a new initiative organized
by the SIAM Chapter of the University of Pavia – IMATI. The series aims to
promote dialogue and collaboration between Mathematics and Engineering,
exploring interdisciplinary topics that bridge theory and application.

Each seminar features contributions from both established researchers and
emerging scholars, fostering an environment of knowledge exchange and
innovation at the intersection of these two fields.
We are pleased to announce two* Inaugural Seminars:*

   - *Speaker*: Matteo Negri - Professor at University of Pavia


   - *Title*:  From Energy Functionals to cracks: bridging analysis and
   computation in phase-field fracture


   - *Where and when*:  October 30th, Aula Beltrami, Department of
   Mathematics, University of Pavia.


   - *Abstract: * We present a general approach for quasi-static and
   dynamic fracture propagation based on energy functionals. Quasi-static
   (steady-state) evolutions are governed by energy identity and equilibrium,
   with respect to displacement and crack variations. We present these basic
   ingredients and the resulting system of evolution equations for a toy
   sharp-crack model and then for a phase-field model. In the latter case the
   evolution is computed by means of constrained incremental problems, which
   we solve using a staggered algorithm. Consistency between sharp and
   phase-field approaches is supported by Γ-convergence and numerical
   simulations, however the overall theoretical and computational picture is
   far from being complete and raises open problems on convergence of
   energies, algorithms and evolutions. For dynamic problems, evolutions are
   governed by energy identity and equilibrium (as in quasi-static) together
   with stationary action. Again, we compute phase-field evolutions by a
   staggered scheme where the wave equation is solved by a Newmark method, in
   a way that numerical dissipation is negligible; as a result simulations
   feature energy conservation and a precise representation of P- and S-waves.
   In this setting, high order phase-field energies turn out to be crucial to
   reduce the computational cost without compromising accuracy.



   - *Speaker*: Antonio MAria D'altri - Professor at University of Bologna


   - *Title*: Computational Analysis of Masonry and Heritage
   Structures:recent advances across different scales


   - *Where and when*:  November 19th, Sala Conferenze, IMATI - CNR.


   - *Abstract: *  This seminar provides an overview of computational
   modeling techniques applied to masonry and heritage structures, emphasizing
   recent advances across different scales, i.e., from a full-scale monument
   (e.g., medieval castle) down to the micrometer scale of a single pore in
   porous building material. The presentation begins by addressing the
   structural scale, focusing on the numerical modeling and structural
   analysis of full-scale heritage structures. A key challenge discussed is
   finite element (FE) mesh generation from point clouds, featuring procedures
   such as Cloud2FEM. This is followed by an overview of analysis approaches
   for conducting structural assessments on large-scale historical structures.
   Next, the focus narrows to a high-fidelity block-based mechanical model for
   masonry, where damaging blocks interact through cohesive-frictional contact
   constraints. Applications, including those in the dynamic regime under
   earthquake-like actions, will be shown. A recent advancement is the
   "continualization" of this block-based model through deriving a
   mechanism-based strength domain and implementing it within plasticity and
   damage computational frameworks. Finally, the discussion shifts to the
   micrometer scale with the simulation of salt crystallization-induced damage
   in porous materials. This involves multiphase modeling of water and salt
   transport within porous building materials, coupled with
   micromechanics-based damage estimations. The seminar will conclude with a
   brief mention of advances in the Virtual Element Method (VEM) and an
   overview of the Marie Skłodowska-Curie Postdoctoral Fellowships (MSCA PF)
   call, highlighting this opportunity for future research funding for
   young investigators.


We look forward to your participation!

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Sincerely,

SIAM Chapter Organization Committee