{"id":939,"date":"2022-09-15T19:12:38","date_gmt":"2022-09-15T19:12:38","guid":{"rendered":"https:\/\/insyte.website\/WordPress\/?post_type=glossary&#038;p=939"},"modified":"2022-09-18T17:38:38","modified_gmt":"2022-09-18T17:38:38","slug":"moment-dinertie","status":"publish","type":"glossary","link":"https:\/\/insyte.website\/WordPress\/glossary\/moment-dinertie\/","title":{"rendered":"Moment d&rsquo;inertie"},"content":{"rendered":"<p><em>Mn&eacute;motechnique : les masses sont fain&eacute;antes &hellip;. les inerties aussi !!<\/em><\/p>\n\n\n\n<p>Le moment d&rsquo;inertie \\(J \\)ou \\( I\\) caract&eacute;rise la r&eacute;partition des masses par rapport &agrave; un axe de rotation. On parle de moment d&rsquo;inertie uniquement dans les mouvements de translation. Le <strong>moment d&rsquo;inertie<\/strong> est &agrave; la rotation ce que la <strong>masse <\/strong>est &agrave; la translation. <\/p>\n\n\n\n<p>Les vid&eacute;os ci-dessous montrent l&rsquo;effet du moment d&rsquo;inertie sur l&rsquo;&eacute;nergie accumul&eacute;e dans un objet en rotation.<\/p>\n\n\n<style>#kt-layout-id_ae7d39-4f > .kt-row-column-wrap{align-content:start;}:where(#kt-layout-id_ae7d39-4f > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}#kt-layout-id_ae7d39-4f > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);padding-top:var( --global-kb-row-default-top, 25px );padding-bottom:var( --global-kb-row-default-bottom, 25px );padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);grid-template-columns:minmax(0, calc(50% - ((var(--global-kb-gap-md, 2rem) * 1 )\/2)))minmax(0, calc(50% - ((var(--global-kb-gap-md, 2rem) * 1 )\/2)));}#kt-layout-id_ae7d39-4f > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){#kt-layout-id_ae7d39-4f > .kt-row-column-wrap{grid-template-columns:minmax(0, 2fr) minmax(0, 1fr);}}@media all and (max-width: 767px){#kt-layout-id_ae7d39-4f > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style>\n<div class=\"wp-block-kadence-rowlayout alignnone\"><div id=\"kt-layout-id_ae7d39-4f\" class=\"kt-row-layout-inner kt-layout-id_ae7d39-4f\"><div class=\"kt-row-column-wrap kt-has-2-columns kt-gutter-default kt-v-gutter-default kt-row-valign-top kt-row-layout-left-golden kt-tab-layout-inherit kt-m-colapse-left-to-right kt-mobile-layout-row  kt-custom-first-width-50  kt-custom-second-width-50\"><style>.kadence-column_2856ef-c4 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_2856ef-c4 > .kt-inside-inner-col,.kadence-column_2856ef-c4 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column_2856ef-c4 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_2856ef-c4 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_2856ef-c4 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_2856ef-c4 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_2856ef-c4{position:relative;}@media all and (max-width: 1024px){.kadence-column_2856ef-c4 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_2856ef-c4 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_2856ef-c4\"><div class=\"kt-inside-inner-col\">\n<p>Les deux volants d&rsquo;inertie sont lanc&eacute;s &agrave; la m&ecirc;me vitesse. Cependant le volants d&rsquo;inertie rouge s&rsquo;arr&ecirc;te avant le bleu&hellip;malgr&eacute; que les dimensions des deux volants d&rsquo;inertie soient identiques. Pourquoi ?<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"volants inertie mat&#xE9;riaux diff&#xE9;rents\" width=\"720\" height=\"405\" src=\"https:\/\/www.youtube.com\/embed\/iGZTXWQI5Sc?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p><strong>R&eacute;ponse :<\/strong> Les mat&eacute;riaux sont diff&eacute;rents, ce qui indique que les masses et surtout les moments d&rsquo;inerties sont diff&eacute;rents. Le volant bleu de moment d&rsquo;inertie plus grand accumule plus d&rsquo;&eacute;nergie cin&eacute;tique de rotation et ainsi tourne plus longtemps.<\/p>\n<\/div><\/div>\n\n\n<style>.kadence-column_7ab099-ac > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_7ab099-ac > .kt-inside-inner-col,.kadence-column_7ab099-ac > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column_7ab099-ac > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_7ab099-ac > .kt-inside-inner-col{flex-direction:column;}.kadence-column_7ab099-ac > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_7ab099-ac > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_7ab099-ac{position:relative;}@media all and (max-width: 1024px){.kadence-column_7ab099-ac > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_7ab099-ac > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-2 kadence-column_7ab099-ac\"><div class=\"kt-inside-inner-col\">\n<p>Les deux volants d&rsquo;inertie sont lanc&eacute;s &agrave; la m&ecirc;me vitesse. Cependant le <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Syst&egrave;me &agrave; stockage inertiel&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Les syst&egrave;mes &agrave; stockage inertiel sont bas&eacute;s sur la mise en rotation de volants d&amp;#039;inertie. Ces volants d&amp;#039;inertie vont stocker m&eacute;caniquement de l&amp;#039;&eacute;nergie cin&eacute;tique.&amp;lt;br\/&amp;gt;L&amp;#039;expression de l&amp;#039;&eacute;nergie(...)&lt;iframe width=&#039;380&#039; height=&#039;214&#039; src=&#039;https:\/\/www.youtube.com\/embed\/PEcIlxUABOQ&#039; title=&#039;D&eacute;fi &eacute;nerg&eacute;tique: le volant d&#039;inertie (stockage d&#039;&eacute;nergie)&#039; frameborder=&#039;0&#039; allow=&#039;accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture&#039; allowfullscreen&gt;&lt;\/iframe&gt;&lt;\/div&gt;\"  href=\"https:\/\/insyte.website\/WordPress\/glossary\/systeme-a-stockage-inertiel\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>volant d&rsquo;inertie<\/a> rouge s&rsquo;arr&ecirc;tent avant le bleu &hellip;. malgr&eacute; que cette fois les masses soit identiques et mat&eacute;riaux identiques. Pourquoi ?<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Inertie volant Acier Alli&#xE9; Plein et Reparti\" width=\"720\" height=\"405\" src=\"https:\/\/www.youtube.com\/embed\/t0XxaLPB8mA?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p><strong>R&eacute;ponse :<\/strong> La r&eacute;partition des masses est diff&eacute;rente. Le volant bleu pr&eacute;sente une r&eacute;partition des masses plus &eacute;loign&eacute;e de l&rsquo;axe de rotation. Son moment d&rsquo;inertie est par cons&eacute;quent plus important. Ayant un moment d&rsquo;inertie plus grand, le volant bleu accumule plus d&rsquo;&eacute;nergie cin&eacute;tique de rotation et ainsi tourne plus longtemps.<\/p>\n<\/div><\/div>\n<\/div><\/div><\/div>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/matriceMomentInertie.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"Contenu embarqu&#xE9; Contenu embarqu&#xE9; matriceMomentInertie..\"><\/object><a id=\"wp-block-file--media-d0942808-2e9e-4453-a966-e43abba50a4e\" href=\"https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/matriceMomentInertie.pdf\">matriceMomentInertie<\/a><a href=\"https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/matriceMomentInertie.pdf\" class=\"wp-block-file__button\" download aria-describedby=\"wp-block-file--media-d0942808-2e9e-4453-a966-e43abba50a4e\">T&#xE9;l&#xE9;charger<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Mn&eacute;motechnique : les masses sont fain&eacute;antes &hellip;. les inerties aussi !! Le moment d&rsquo;inertie ou caract&eacute;rise la r&eacute;partition des masses par rapport &agrave; un axe de rotation. On parle de moment d&rsquo;inertie uniquement dans les mouvements de translation. Le moment d&rsquo;inertie est &agrave; la rotation ce que la masse est &agrave; la translation. Les vid&eacute;os&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"menu_order":0,"template":"","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"glossary-categories":[],"glossary-tags":[],"glossary-languages":[],"class_list":["post-939","glossary","type-glossary","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Moment d&#039;inertie - Insyte.website<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/insyte.website\/WordPress\/glossary\/moment-dinertie\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Moment d&#039;inertie - Insyte.website\" \/>\n<meta property=\"og:description\" content=\"Mn&eacute;motechnique : les masses sont fain&eacute;antes &hellip;. les inerties aussi !! 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