{"id":6878,"date":"2021-02-10T14:20:53","date_gmt":"2021-02-10T12:20:53","guid":{"rendered":"https:\/\/blog.federnshop.com\/types-de-ressorts-de-traction-de-contrainte\/"},"modified":"2021-02-10T14:20:55","modified_gmt":"2021-02-10T12:20:55","slug":"types-de-ressorts-de-traction-de-contrainte","status":"publish","type":"post","link":"https:\/\/blog.federnshop.com\/fr\/types-de-ressorts-de-traction-de-contrainte\/","title":{"rendered":"Types de ressorts de traction de contrainte"},"content":{"rendered":"<p><a href=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Formelzeichen_Zugfedern_komplett.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-6876\" src=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Hubspannung_Zugfeder.jpg\" alt=\"Ressort de traction de tension de course\" width=\"600\" height=\"345\" data-wp-pid=\"1930\" srcset=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Hubspannung_Zugfeder.jpg 800w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Hubspannung_Zugfeder-300x173.jpg 300w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Hubspannung_Zugfeder-600x345.jpg 600w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Hubspannung_Zugfeder-400x230.jpg 400w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Hubspannung_Zugfeder-200x115.jpg 200w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<p style=\"text-align: right;\"><a href=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Formelzeichen_Zugfedern_komplett.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Description Symbole de formule Ressorts de tension<\/a><\/p>\n<p>Avant d&rsquo;interpr\u00e9ter le<a href=\"https:\/\/blog.federnshop.com\/fr\/ressorts-dextension-dinformation\/\"> ressort de traction<\/a> il faut clarifier si le type de stress pr\u00e9vu est un<strong> statique<\/strong> ou un<strong> contrainte dynamique<\/strong> actes.<\/p>\n<p>Aucune valeur g\u00e9n\u00e9rale de r\u00e9sistance \u00e0 la fatigue ne peut \u00eatre donn\u00e9e pour les charges dynamiques sur les ressorts de traction,<a href=\"https:\/\/blog.federnshop.com\/fr\/ressorts-dextension-dinformation\/\"> Points de pliage des \u0153illets<\/a> des contraintes suppl\u00e9mentaires peuvent survenir, dont certaines d\u00e9passent les contraintes admissibles. Les ressorts de tension ne doivent donc \u00eatre soumis \u00e0 des charges statiques que si possible. Si le stress dynamique ne peut \u00eatre \u00e9vit\u00e9, il faut opter pour un angle<a href=\"https:\/\/blog.federnshop.com\/fr\/forme-danneau-des-ressorts-de-traction\/\"> Oeillets<\/a> renoncer et<a href=\"https:\/\/blog.federnshop.com\/fr\/forme-danneau-des-ressorts-de-traction\/\"> roul\u00e9 ou viss\u00e9 en bouts<\/a> d\u00e9ployer. Lorsque les ressorts de tension sont soumis \u00e0 des charges dynamiques, un test de dur\u00e9e de vie dans des conditions de fonctionnement ult\u00e9rieures est important. Un renforcement de surface par grenaillage ne peut pas \u00eatre r\u00e9alis\u00e9 ou seulement avec un effort important en raison des spires rapproch\u00e9es.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/blog.federnshop.com\/fr\/types-de-ressorts-de-traction-de-contrainte\/#Contrainte_statique_sur_le_ressort_de_traction\" >Contrainte statique sur le ressort de traction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/blog.federnshop.com\/fr\/types-de-ressorts-de-traction-de-contrainte\/#Contrainte_dynamique_sur_le_ressort_de_traction\" >Contrainte dynamique sur le ressort de traction<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Contrainte_statique_sur_le_ressort_de_traction\"><\/span>Contrainte statique sur le ressort de traction<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Charge constante dans le temps (statique) ou charge variable dans le temps avec moins de 10000 courses au total ou petites contraintes de course (\u03c4h = \u03c42 &#8211; \u03c41) jusqu&rsquo;\u00e0 0,1 x r\u00e9sistance \u00e0 la fatigue (\u03c4kh = \u03c4k2 &#8211; \u03c4k1).<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Contrainte_dynamique_sur_le_ressort_de_traction\"><\/span>Contrainte dynamique sur le ressort de traction<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Les contraintes dynamiques sur les ressorts sont d\u00e9finies comme des contraintes qui changent dans le temps avec plus de 10 000 changements de charge ou des contraintes de course (\u03c4h) sup\u00e9rieures \u00e0 0,1 x r\u00e9sistance \u00e0 la fatigue (\u03c4kh) avec une contrainte de course constante et variable.<\/p>\n<p>La contrainte de cisaillement existante est d\u00e9termin\u00e9e comme suit.<\/p>\n<p>Contrainte de cisaillement due \u00e0 la force: <img decoding=\"async\" class=\"mathtex-equation-editor\" src=\"https:\/\/chart.apis.google.com\/chart?cht=tx&amp;chl=%5Ctau%3D%5Cfrac%7B8DF%7D%7B%5Cpi%20d%5E%7B3%7D%7D\" alt=\"\\ tau = \\ frac wpml_curved wpml_value = '8DF' \/ wpml_curved {\\ pi d ^ wpml_curved wpml_value = '3' \/ wpml_curved }\" align=\"absmiddle\"><\/p>\n<p>Contrainte de cisaillement du chemin: <img decoding=\"async\" class=\"mathtex-equation-editor\" src=\"https:\/\/chart.apis.google.com\/chart?cht=tx&amp;chl=%5Ctau%3D%5Cfrac%7BGds%7D%7B%5Cpi%20nD%5E%7B2%7D%7D\" alt=\"\\ tau = \\ frac wpml_curved wpml_value = 'Gds' \/ wpml_curved {\\ pi nD ^ wpml_curved wpml_value = '2' \/ wpml_curved }\" align=\"absmiddle\"><\/p>\n<p>Pour la charge dynamique, la tension de course corrig\u00e9e doit \u00eatre calcul\u00e9e en raison de l&rsquo;augmentation de la tension.<\/p>\n<p>Contrainte de cisaillement corrig\u00e9e: <img decoding=\"async\" class=\"mathtex-equation-editor\" src=\"https:\/\/chart.apis.google.com\/chart?cht=tx&amp;chl=%5Ctau_%7B%7Bk%7D%7D%3Dk%5Ctau\" alt=\"\\ dew_ {} = k \\ tau\" align=\"absmiddle\"><\/p>\n<p>Tension de course corrig\u00e9e: \u03c4kh = \u03c4k2 &#8211; \u03c4k1<\/p>\n<p>O\u00f9 pour k s&rsquo;applique (selon Bergstr\u00e4sser):<\/p>\n<p><img decoding=\"async\" class=\"mathtex-equation-editor\" src=\"https:\/\/chart.apis.google.com\/chart?cht=tx&amp;chl=k%3D%5Cfrac%7B%5Cfrac%7BD%7D%7Bd%7D%2B0%2C5%7D%7B%5Cfrac%7BD%7D%7Bd%7D-0%2C75%7D\" alt=\"k = \\ frac {\\ frac wpml_curved wpml_value = 'D' \/ wpml_curved wpml_curved wpml_value = 'd' \/ wpml_curved +0,5} {\\ frac wpml_curved wpml_value = 'D' \/ wpml_curved wpml_curved wpml_value = 'd' \/ wpml_curved -0,75}\" align=\"absmiddle\"><\/p>\n<p>Avec le facteur de correction de tension k, qui d\u00e9pend du rapport d&rsquo;enroulement (rapport du diam\u00e8tre moyen \u00e0 l&rsquo;\u00e9paisseur du fil) du ressort, la tension la plus \u00e9lev\u00e9e peut \u00eatre approximativement d\u00e9termin\u00e9e.<\/p>\n<p>Tension admissible: <img decoding=\"async\" class=\"mathtex-equation-editor\" src=\"https:\/\/chart.apis.google.com\/chart?cht=tx&amp;chl=%5Ctau_%7B%7Bzul%7D%7D%3D0%2C45%20%5Ccdot%20R_%7B%7Bm%7D%7D\" alt=\"\\ dew_ {} = 0,45 \\ cdot R_ {}\" align=\"absmiddle\"><\/p>\n<p><a href=\"https:\/\/blog.federnshop.com\/zugfestigkeit-federwerkstoffe\/\" target=\"_blank\" rel=\"noopener noreferrer\">Valeurs minimales de r\u00e9sistance \u00e0 la traction des mat\u00e9riaux de ressort <img decoding=\"async\" class=\"mathtex-equation-editor\" src=\"https:\/\/chart.apis.google.com\/chart?cht=tx&amp;chl=R_%7B%7Bm%7D%7D\" alt=\"R_ {}\" align=\"absmiddle\"> <\/a><\/p>\n<p>La contrainte maximale existante \u03c4n \u00e0 la plus grande d\u00e9formation du ressort sn correspond \u00e0 la contrainte admissible. Pour cependant<a href=\"https:\/\/blog.federnshop.com\/fr\/relaxation-des-ressorts\/\" target=\"_blank\" rel=\"noopener noreferrer\"> relaxation<\/a> Pour \u00e9viter cela, seulement 80% de cette course de ressort doit \u00eatre utilis\u00e9e en pratique.<\/p>\n<p><img decoding=\"async\" class=\"mathtex-equation-editor\" src=\"https:\/\/chart.apis.google.com\/chart?cht=tx&amp;chl=s_%7B%7B2%7D%7D%3D0%2C8%5Ccdot%20s_%7B%7Bn%7D%7D\" alt=\"s_ {} = 0.8 \\ cdot s_ {}\" align=\"absmiddle\"><\/p>\n<p>&nbsp;<\/p>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/cqsZmGz7Tng\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p>Liens int\u00e9ressants:<\/p>\n<ul>\n<li><a href=\"https:\/\/blog.federnshop.com\/fr\/types-de-ressorts-de-compression-de-contrainte\/\">Types de ressorts de compression de contrainte<\/a><\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.federnshop.com\/de\/federberechnung-auswahl.html\" target=\"_blank\" rel=\"noopener noreferrer\">Calcul du ressort Gutekunst WinFSB<\/a><\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.federnshop.com\/de\/service_informationen\/federnauslegung.html\" target=\"_blank\" rel=\"noopener noreferrer\">Conception de ressort<\/a><\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.federnshop.com\/de\/service-und-informationen\/technische-beratung.html\" target=\"_blank\" rel=\"noopener noreferrer\">Conseils techniques de Gutekunst Federn<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Description Symbole de formule Ressorts de tension Avant d&rsquo;interpr\u00e9ter le ressort de traction il faut clarifier si le type de stress pr\u00e9vu est un statique ou un contrainte dynamique actes. Aucune valeur g\u00e9n\u00e9rale de r\u00e9sistance \u00e0 la fatigue ne peut<\/p>\n","protected":false},"author":4,"featured_media":6880,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[464,873,874,870],"tags":[1469,1210,567,1470,1600,621],"class_list":["post-6878","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-connaissance","category-ressorts-de-traction","category-ressorts-de-traction-sans-fin","category-ressorts-en-fil","tag-dynamische-beanspruchung-fr","tag-oesenformen","tag-schubspannung-fr","tag-statische-beanspruchung-fr","tag-tension-de-levage","tag-zugfedern-fr"],"_links":{"self":[{"href":"https:\/\/blog.federnshop.com\/fr\/wp-json\/wp\/v2\/posts\/6878","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.federnshop.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.federnshop.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.federnshop.com\/fr\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.federnshop.com\/fr\/wp-json\/wp\/v2\/comments?post=6878"}],"version-history":[{"count":1,"href":"https:\/\/blog.federnshop.com\/fr\/wp-json\/wp\/v2\/posts\/6878\/revisions"}],"predecessor-version":[{"id":6881,"href":"https:\/\/blog.federnshop.com\/fr\/wp-json\/wp\/v2\/posts\/6878\/revisions\/6881"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.federnshop.com\/fr\/wp-json\/wp\/v2\/media\/6880"}],"wp:attachment":[{"href":"https:\/\/blog.federnshop.com\/fr\/wp-json\/wp\/v2\/media?parent=6878"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.federnshop.com\/fr\/wp-json\/wp\/v2\/categories?post=6878"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.federnshop.com\/fr\/wp-json\/wp\/v2\/tags?post=6878"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}