{"id":12330,"date":"2020-07-30T10:20:41","date_gmt":"2020-07-30T08:20:41","guid":{"rendered":"http:\/\/navier-lab.fr\/?page_id=12330"},"modified":"2020-07-30T10:20:41","modified_gmt":"2020-07-30T08:20:41","slug":"reduction-de-modeles-en-dynamique","status":"publish","type":"page","link":"https:\/\/navier-lab.fr\/en\/research\/materiaux-et-structures-architectures-msa\/modelisation-et-changements-dechelle\/reduction-de-modeles-en-dynamique\/","title":{"rendered":"R\u00e9duction de mod\u00e8les en dynamique"},"content":{"rendered":"<section class=\"kc-elm kc-css-788153 kc_row\"><div class=\"kc-row-container  kc-container\"><div class=\"kc-wrap-columns\"><div class=\"kc-elm kc-css-251975 kc_col-sm-8 kc_column kc_col-sm-8\"><div class=\"kc-col-container\"><div class=\"kc-elm kc-css-383145 kc_text_block\"><\/p>\n<p>L\u2019activit\u00e9 se concentre autour de la m\u00e9thode Wave Finite Element (WFE) dont le principe est de d\u00e9crire la propagation des ondes harmoniques dans un milieu p\u00e9riodique \u00e0 partir des ondes dans une seule cellule en utilisant le th\u00e9or\u00e8me de Floquet. On constitue ainsi une base de modes d\u2019onde permettant de d\u00e9crire avec un faible co\u00fbt en temps de calcul, le mouvement d\u2019une structure compl\u00e8te avec un nombre arbitraire de cellules. Les principales avanc\u00e9es r\u00e9centes ont concern\u00e9 la possibilit\u00e9 de d\u00e9crire le mouvement avec un nombre r\u00e9duit de modes d\u2019onde au lieu d\u2019utiliser la totalit\u00e9 des modes comme cela est fait classiquement. Le d\u00e9veloppement de la m\u00e9thode s\u2019est aussi orient\u00e9 vers la prise en compte de chargements complexes et r\u00e9parties sur l\u2019ensemble de la structure pour pouvoir traiter des cas plus r\u00e9alistes. Les applications pratiques principales sont la dynamique des voies ferroviaires et les vibrations de ponts.<\/p>\n<p>\n<\/div><\/div><\/div><div class=\"kc-elm kc-css-390797 kc_col-sm-4 kc_column kc_col-sm-4\"><div class=\"kc-col-container\"><div class=\"kc-elm kc-css-954042 kc_shortcode kc_single_image\">\n\n        <a rel=\"prettyPhoto\" class=\"kc-pretty-photo\" href=\"https:\/\/navier-lab.fr\/wp-content\/uploads\/2020\/07\/fem_wfe-1024x632-1.png\" title=\"\" target=\"\">\n        <img decoding=\"async\" src=\"https:\/\/navier-lab.fr\/wp-content\/uploads\/2020\/07\/fem_wfe-1024x632-1.png\" class=\"\" alt=\"\" \/>    <\/a>\n    <\/div>\n<\/div><\/div><\/div><\/div><\/section>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":12320,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-12330","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/pages\/12330","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/comments?post=12330"}],"version-history":[{"count":1,"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/pages\/12330\/revisions"}],"predecessor-version":[{"id":12331,"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/pages\/12330\/revisions\/12331"}],"up":[{"embeddable":true,"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/pages\/12320"}],"wp:attachment":[{"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/media?parent=12330"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}