{"id":19675,"date":"2025-04-17T11:44:20","date_gmt":"2025-04-17T09:44:20","guid":{"rendered":"https:\/\/navier-lab.fr\/?post_type=event&#038;p=19675"},"modified":"2025-04-17T11:45:58","modified_gmt":"2025-04-17T09:45:58","slug":"seminaire-geotech-maria-olarte-garzon","status":"publish","type":"event","link":"https:\/\/navier-lab.fr\/en\/agenda\/seminaire-geotech-maria-olarte-garzon\/","title":{"rendered":"Geotech Young Seminar Series: Maria Camila Olarte Garzon (Navier)"},"content":{"rendered":"<section class=\"kc-elm kc-css-779425 kc_row\"><div class=\"kc-row-container  kc-container\"><div class=\"kc-wrap-columns\"><div class=\"kc-elm kc-css-405585 kc_col-sm-12 kc_column kc_col-sm-12\"><div class=\"kc-col-container\">\n<div class=\"kc-elm kc-css-98910 kc-title-wrap \">\n\n\t<h1 class=\"kc_title\">A FFT-based method for computing the thermo-hydro-mechanical response of porous composites <\/h1>\n<\/div>\n<div class=\"kc-elm kc-css-703236 kc_text_block\"><\/p>\n<h2><strong>Abstract:<\/strong><\/h2>\n<p style=\"text-align: justify;\">Fast Fourier Transform (FFT) methods have been widely used for more than a decade as an alternative to more conventional numerical techniques (FEM, BEM). These methods allow estimating the elastic mechanical response of composite materials, by means of the discretization of the Lippmann-Schwinger equation, and the truncation of the Fourier series values. The basic scheme, a fixed-point algorithm of easy application, is limited when multiphase systems with both pores and infinitely rigid inclusions are used. Using the approach proposed by Sab et al. [1]1, we present the mathematical analysis of three different FFT-based numerical schemes for homogenization of porous composites in the framework of : (i) linear plasticity, evaluating the plastic evolution with von Mises, Drucker-Prager and Cam clay yield criteria, (ii) hydraulic and thermal fields, calculating the permeability tensor, Khom, from the Darcy\/Darcy problem and the thermal conductivity tensor, \u03bbhom formulated for Fourier to Fourier upscaling, and (iii) thermoporomechanical (THM) coupling, where we use the constitutive relations of the porous solid [2] to calculate all the homogeneous operators of the THM matrix. The accuracy of each scheme is evaluated by comparisons with a finite element solver and analytical solutions for simple microstructures.<\/p>\n<p><strong>References:<\/strong><\/p>\n<p>[1] Sab, K., Bleyer, J., Brisard, S., &amp; Dolbeau, M. (2024), <em>An FFT-based adaptive polarization method for infinitely contrasted media with guaranteed convergence<\/em>. Computer Methods in Applied Mechanics and Engineering, 427, 117012<br \/>\n[2] Coussy (2011), <em>Mechanics and physics of porous solids<\/em>. John Wiley &amp; Sons<\/p>\n<p>\n<\/div><div class=\"kc-elm kc-css-20130 kc_text_block\"><\/p>\n<h2><strong>Short bio:<\/strong><\/h2>\n<p style=\"text-align: justify;\">Maria earned her Master\u2019s degree in Geotechnical Engineering from the Universidade de Bras\u00edlia (Brazil, 2023). Since the same year, she has been pursuing a PhD at CERMES, within the Navier Laboratory, under the supervision of Prof. Jean-Michel Pereira and Prof. Patrick Dangla. Her research focuses on investigating thermo-hydro-mechanical couplings in frozen soils using FFT-based homogenization techniques.<\/p>\n<p>\n<\/div><\/div><\/div><\/div><\/div><\/section>\n","protected":false},"excerpt":{"rendered":"<p>A FFT-based method for computing the thermo-hydro-mechanical response of porous composites <\/p>\n","protected":false},"author":158,"featured_media":0,"template":"","class_list":["post-19675","event","type-event","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/event\/19675","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/event"}],"about":[{"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/types\/event"}],"author":[{"embeddable":true,"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/users\/158"}],"wp:attachment":[{"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/media?parent=19675"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}