{"id":358,"date":"2021-05-20T11:08:03","date_gmt":"2021-05-20T09:08:03","guid":{"rendered":"https:\/\/cfcp.wp2.siteo.com\/lrccp\/?page_id=358"},"modified":"2021-09-10T14:48:14","modified_gmt":"2021-09-10T12:48:14","slug":"mecanique-des-polymeres","status":"publish","type":"page","link":"https:\/\/cfcp-caoutchouc.com\/lrccp\/nos-prestations-techniques\/mecanique-des-polymeres\/","title":{"rendered":"M\u00e9canique des polym\u00e8res"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Essais statiques et dynamiques<\/h2>\n\n\n\n<p>La caract\u00e9risation m\u00e9canique avanc\u00e9e des mat\u00e9riaux polym\u00e8res et notamment des \u00e9lastom\u00e8res repr\u00e9sente le pilier de cette activit\u00e9.<br>Le LRCCP dispose de nombreux moyens de caract\u00e9risations statiques et dynamiques.<br>En statique, outre des capacit\u00e9s dynamom\u00e9triques \u00e9lectrom\u00e9caniques jusqu\u2019\u00e0 100 kN permettant la r\u00e9alisation d\u2019essais divers et vari\u00e9s sur \u00e9prouvettes et sur pi\u00e8ces, des moyens sp\u00e9cifiques permettent de mener des essais d\u00e9di\u00e9s pour diff\u00e9rentes sollicitations :<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Relaxation de contrainte<\/li><li>Fluage<\/li><li>Recouvrance<\/li><\/ul>\n\n\n\n<p>Des moyens de caract\u00e9risations dynamiques, DMA et machines servo hydrauliques, compl\u00e8tent les outils indispensables \u00e0 l\u2019\u00e9tude des polym\u00e8res et \u00e9lastom\u00e8res pour des applications vibratoires.<\/p>\n\n\n\n<p>Tous ces moyens d\u2019essais peuvent \u00eatre adapt\u00e9s aux conditions d\u2019exploitation des polym\u00e8res avec prise en compte des effets des param\u00e8tres temps et temp\u00e9rature.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Mod\u00e9lisation et simulation num\u00e9rique<\/h2>\n\n\n\n<p>La simulation num\u00e9rique par \u00e9l\u00e9ments finis du comportement thermo-m\u00e9canique de pi\u00e8ces et de structures faisant intervenir des \u00e9lastom\u00e8res, des thermoplastiques, n\u00e9cessite la d\u00e9finition de mod\u00e8le de comportement adapt\u00e9s (hyper\u00e9lasticit\u00e9 et visco\u00e9lasticit\u00e9 pour les \u00e9lastom\u00e8res, \u00e9lastoplasticit\u00e9 et viscoplasticit\u00e9 pour les thermoplastiques).<\/p>\n\n\n\n<p>Depuis de nombreuses ann\u00e9es, le LRCCP a d\u00e9velopp\u00e9 une solide expertise permettant de d\u00e9velopper des mod\u00e8les de comportement statiques et dynamiques utilisables pour des travaux de simulations num\u00e9riques par \u00e9l\u00e9ments finis dans des codes non lin\u00e9aires comme ANSYS, MSC MARC, ABAQUS\u2026<\/p>\n\n\n\n<p>Par ailleurs, le LRCCP propose \u00e9galement des travaux de simulations num\u00e9riques par \u00e9l\u00e9ments finis sur la base de 2 outils de simulation : ANSYS et ABAQUS.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Rupture et fatigue<\/h2>\n\n\n\n<p>Les probl\u00e9matiques de maitrise de la rupture, de l\u2019endommagement de pi\u00e8ces \u00e9lastom\u00e8res ou polym\u00e8res repr\u00e9sente un enjeu de premier plan.<\/p>\n\n\n\n<p>Outre la r\u00e9alisation d\u2019essais classiques de m\u00e9canique de la rupture en quasi-statique, le LRCCP dispose de moyens et de comp\u00e9tences pour l\u2019\u00e9tude du comportement en fatigue de mat\u00e9riaux polym\u00e8res et notamment \u00e9lastom\u00e8res.<\/p>\n\n\n\n<p>Des essais sur pi\u00e8ces ou sur \u00e9prouvettes peuvent \u00eatre r\u00e9alis\u00e9s en d\u2019endurance sur machines servo-hydrauliques (d\u00e9placement ou efforts impos\u00e9s) mais \u00e9galement en fissuration (essais sur \u00e9prouvettes entaill\u00e9es de cisaillement pur).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Essais statiques et dynamiques La caract\u00e9risation m\u00e9canique avanc\u00e9e des mat\u00e9riaux polym\u00e8res et notamment des \u00e9lastom\u00e8res repr\u00e9sente le pilier de cette activit\u00e9.Le LRCCP dispose de nombreux moyens de caract\u00e9risations statiques et dynamiques.En statique, outre des capacit\u00e9s dynamom\u00e9triques \u00e9lectrom\u00e9caniques jusqu\u2019\u00e0 100 kN permettant la r\u00e9alisation d\u2019essais divers et vari\u00e9s sur \u00e9prouvettes et sur pi\u00e8ces, des moyens sp\u00e9cifiques [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":15,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"ppbuilder\/page-multisection-partiel.php","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"1","_relevanssi_noindex_reason":"","footnotes":""},"class_list":["post-358","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the 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