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Disponible en 27 langues." > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-27" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">27 langues</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B4%D8%AF" title="شد – arabe" lang="ar" hreflang="ar" data-title="شد" data-language-autonym="العربية" data-language-local-name="arabe" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-bh mw-list-item"><a href="https://bh.wikipedia.org/wiki/%E0%A4%A4%E0%A4%BE%E0%A4%A8_(%E0%A4%AD%E0%A4%93%E0%A4%A4%E0%A4%BF%E0%A4%95%E0%A5%80)" title="तान (भओतिकी) – Bhojpuri" lang="bh" hreflang="bh" data-title="तान (भओतिकी)" data-language-autonym="भोजपुरी" data-language-local-name="Bhojpuri" class="interlanguage-link-target"><span>भोजपुरी</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%95%CF%86%CE%B5%CE%BB%CE%BA%CF%85%CF%83%CE%BC%CF%8C%CF%82" title="Εφελκυσμός – grec" lang="el" hreflang="el" data-title="Εφελκυσμός" data-language-autonym="Ελληνικά" data-language-local-name="grec" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Tension_(physics)" title="Tension (physics) – anglais" lang="en" hreflang="en" data-title="Tension (physics)" data-language-autonym="English" data-language-local-name="anglais" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Tensi%C3%B3n_(mec%C3%A1nica)" title="Tensión (mecánica) – espagnol" lang="es" hreflang="es" data-title="Tensión (mecánica)" data-language-autonym="Español" data-language-local-name="espagnol" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%DA%A9%D8%B4%D8%B4_(%D9%81%DB%8C%D8%B2%DB%8C%DA%A9)" title="کشش (فیزیک) – persan" lang="fa" hreflang="fa" data-title="کشش (فیزیک)" data-language-autonym="فارسی" data-language-local-name="persan" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%9E%D7%AA%D7%99%D7%97%D7%95%D7%AA" title="מתיחות – hébreu" lang="he" hreflang="he" data-title="מתיחות" data-language-autonym="עברית" data-language-local-name="hébreu" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%A4%E0%A4%A8%E0%A4%BE%E0%A4%B5_(%E0%A4%AD%E0%A5%8C%E0%A4%A4%E0%A4%BF%E0%A4%95%E0%A5%80)" title="तनाव (भौतिकी) – hindi" lang="hi" hreflang="hi" data-title="तनाव (भौतिकी)" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-ht mw-list-item"><a href="https://ht.wikipedia.org/wiki/Tansyon" title="Tansyon – créole haïtien" lang="ht" hreflang="ht" data-title="Tansyon" data-language-autonym="Kreyòl ayisyen" data-language-local-name="créole haïtien" class="interlanguage-link-target"><span>Kreyòl ayisyen</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Tarikan_(fisika)" title="Tarikan (fisika) – indonésien" lang="id" hreflang="id" data-title="Tarikan (fisika)" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonésien" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Mekanikala_tenso" title="Mekanikala tenso – ido" lang="io" hreflang="io" data-title="Mekanikala tenso" data-language-autonym="Ido" data-language-local-name="ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Tensione_(meccanica)" title="Tensione (meccanica) – italien" lang="it" hreflang="it" data-title="Tensione (meccanica)" data-language-autonym="Italiano" data-language-local-name="italien" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E5%BC%B5%E5%8A%9B" title="張力 – japonais" lang="ja" hreflang="ja" data-title="張力" data-language-autonym="日本語" data-language-local-name="japonais" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D2%B0%D0%BB%D2%93%D0%B0%D1%8E_%D0%BC%D0%B5%D0%BD_%D1%81%D1%8B%D2%93%D1%8B%D0%BB%D1%83" title="Ұлғаю мен сығылу – kazakh" lang="kk" hreflang="kk" data-title="Ұлғаю мен сығылу" data-language-autonym="Қазақша" data-language-local-name="kazakh" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%8E%E0%B2%B3%E0%B3%86%E0%B2%A4" title="ಎಳೆತ – kannada" lang="kn" hreflang="kn" data-title="ಎಳೆತ" data-language-autonym="ಕನ್ನಡ" data-language-local-name="kannada" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%9E%A5%EB%A0%A5" title="장력 – coréen" lang="ko" hreflang="ko" data-title="장력" data-language-autonym="한국어" data-language-local-name="coréen" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%A4%E0%B4%A8%E0%B4%A8_%E0%B4%AC%E0%B4%B2%E0%B4%82" title="തനന ബലം – malayalam" lang="ml" hreflang="ml" data-title="തനന ബലം" data-language-autonym="മലയാളം" data-language-local-name="malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Si%C5%82a_naci%C4%85gu" title="Siła naciągu – polonais" lang="pl" hreflang="pl" data-title="Siła naciągu" data-language-autonym="Polski" data-language-local-name="polonais" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Tens%C3%A3o_(f%C3%ADsica)" title="Tensão (física) – portugais" lang="pt" hreflang="pt" data-title="Tensão (física)" data-language-autonym="Português" data-language-local-name="portugais" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/For%C8%9B%C4%83_de_%C3%AEntindere" title="Forță de întindere – roumain" lang="ro" hreflang="ro" data-title="Forță de întindere" data-language-autonym="Română" data-language-local-name="roumain" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A1%D0%B8%D0%BB%D0%B0_%D0%BD%D0%B0%D1%82%D1%8F%D0%B6%D0%B5%D0%BD%D0%B8%D1%8F" title="Сила натяжения – russe" lang="ru" hreflang="ru" data-title="Сила натяжения" data-language-autonym="Русский" data-language-local-name="russe" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Tension_(mechanics)" title="Tension (mechanics) – Simple English" lang="en-simple" hreflang="en-simple" data-title="Tension (mechanics)" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Forca_e_tensioni_(fizik%C3%AB)" title="Forca e tensioni (fizikë) – albanais" lang="sq" hreflang="sq" data-title="Forca e tensioni (fizikë)" data-language-autonym="Shqip" data-language-local-name="albanais" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Mekanisk_sp%C3%A4nning" title="Mekanisk spänning – suédois" lang="sv" hreflang="sv" data-title="Mekanisk spänning" data-language-autonym="Svenska" data-language-local-name="suédois" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A0%D0%BE%D0%B7%D1%82%D1%8F%D0%B3" title="Розтяг – ukrainien" lang="uk" hreflang="uk" data-title="Розтяг" data-language-autonym="Українська" data-language-local-name="ukrainien" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%BC%B5%E5%8A%9B" title="張力 – chinois" lang="zh" hreflang="zh" data-title="張力" data-language-autonym="中文" data-language-local-name="chinois" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E5%BC%B5%E5%8A%9B" title="張力 – cantonais" lang="yue" hreflang="yue" data-title="張力" data-language-autonym="粵語" data-language-local-name="cantonais" class="interlanguage-link-target"><span>粵語</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q908584#sitelinks-wikipedia" title="Modifier les liens interlangues" class="wbc-editpage">Modifier les liens</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Espaces de noms"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Tension_m%C3%A9canique" title="Voir le contenu de la page [c]" accesskey="c"><span>Article</span></a></li><li id="ca-talk" class="vector-tab-noicon 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class="mw-indicators"> </div> <div id="siteSub" class="noprint">Un article de Wikipédia, l'encyclopédie libre.</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="fr" dir="ltr"><div class="bandeau-container metadata bandeau-article bandeau-niveau-ebauche"><div class="bandeau-cell bandeau-icone" style="display:table-cell;padding-right:0.5em"><span class="noviewer" typeof="mw:File"><a href="/wiki/Fichier:Circle-icons-gear.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/05/Circle-icons-gear.svg/35px-Circle-icons-gear.svg.png" decoding="async" width="35" height="35" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/05/Circle-icons-gear.svg/53px-Circle-icons-gear.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/05/Circle-icons-gear.svg/70px-Circle-icons-gear.svg.png 2x" data-file-width="512" data-file-height="512" /></a></span></div><div class="bandeau-cell" style="display:table-cell;padding-right:0.5em"> <p><strong class="bandeau-titre">Cet article est une <a href="/wiki/Aide:%C3%89bauche" title="Aide:Ébauche">ébauche</a> concernant la <a href="/wiki/M%C3%A9canique_(science)" title="Mécanique (science)">mécanique</a>.</strong> </p><p>Vous pouvez partager vos connaissances en l’améliorant (<b><a href="/wiki/Aide:Comment_modifier_une_page" title="Aide:Comment modifier une page">comment ?</a></b>) selon les recommandations des <a href="/wiki/Projet:Accueil" title="Projet:Accueil">projets correspondants</a>. </p><p>Consultez la liste des <b>tâches à accomplir</b> en <a href="/wiki/Discussion:Tension_m%C3%A9canique" title="Discussion:Tension mécanique">page de discussion</a>. </p> </div></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fichier:Tug_Of_War_Tension.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/Tug_Of_War_Tension.png/220px-Tug_Of_War_Tension.png" decoding="async" width="220" height="104" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/Tug_Of_War_Tension.png/330px-Tug_Of_War_Tension.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/83/Tug_Of_War_Tension.png/440px-Tug_Of_War_Tension.png 2x" data-file-width="582" data-file-height="276" /></a><figcaption>Combinaison d'une photo d'une équipe de tir à la corde avec une illustration dessinée des éléments de la corde et un diagramme de corps libre d'un élément représentant la tension mécanique exercée par les deux équipes.</figcaption></figure> <p>En physique, la <b>tension mécanique</b> d'un <a href="/wiki/Corps_(entit%C3%A9)" title="Corps (entité)">solide</a> ou une <a href="/wiki/Corde_(outil)" title="Corde (outil)">corde</a>, exprimée en newtons (<abbr class="abbr" title="newton">N</abbr>) — ce qui correspond à des <abbr class="abbr" title="kilogramme mètre par seconde carré">kg m s<sup>−2</sup></abbr> dans le système d'unités <a href="/wiki/Syst%C3%A8me_international_d%27unit%C3%A9s" title="Système international d'unités">SI</a> — est l'effort qu'ils subissent quand ils sont soumis, à leur extrémités, à deux <a href="/wiki/Force_(physique)" title="Force (physique)">forces</a> dirigées vers l'extérieur. En <a href="/wiki/M%C3%A9canique_du_solide_d%C3%A9formable" class="mw-redirect" title="Mécanique du solide déformable">mécanique du solide déformable</a>, cet effort correspond à une <a href="/wiki/Contrainte_(m%C3%A9canique)" title="Contrainte (mécanique)">contrainte</a> appelée <a href="/wiki/Traction" class="mw-disambig" title="Traction">traction</a>. </p><p>Le <a href="/wiki/Vibration" title="Vibration">comportement vibratoire</a> d'une corde <a href="/wiki/D%C3%A9formation_%C3%A9lastique" title="Déformation élastique">élastique</a> dépend de sa tension. C'est la variation de cette tension qui permet d'accorder un <a href="/wiki/Instrument_%C3%A0_cordes" title="Instrument à cordes">instrument à cordes</a>. </p><p>Contrairement à la corde, un solide peut être mis en <a href="/wiki/Compression_(physique)" title="Compression (physique)">compression</a> (ce qui correspond à une contrainte de traction négative). </p><p>Lors du calcul de la <a href="/wiki/Force_centrip%C3%A8te" title="Force centripète">force centripète</a> s'appliquant à une masse <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle m}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>m</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle m}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/0a07d98bb302f3856cbabc47b2b9016692e3f7bc" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:2.04ex; height:1.676ex;" alt="{\displaystyle m}"></span> en rotation à une vitesse <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle V}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>V</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/af0f6064540e84211d0ffe4dac72098adfa52845" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.787ex; height:2.176ex;" alt="{\displaystyle V}"></span> et parcourant un cercle de rayon <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle r}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>r</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle r}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/0d1ecb613aa2984f0576f70f86650b7c2a132538" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.049ex; height:1.676ex;" alt="{\displaystyle r}"></span>, la tension du fil ou de ce qui retient la masse s'exprime par la formule <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle m{\frac {v^{2}}{r}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>m</mi> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <msup> <mi>v</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> <mi>r</mi> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle m{\frac {v^{2}}{r}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/b7b42c2a86407f3cf17f47af06676d8979fe680e" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.838ex; width:5.058ex; height:5.676ex;" alt="{\displaystyle m{\frac {v^{2}}{r}}}"></span>. </p> <div class="mw-heading mw-heading2"><h2 id="Voir_aussi">Voir aussi</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tension_m%C3%A9canique&veaction=edit&section=1" title="Modifier la section : Voir aussi" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tension_m%C3%A9canique&action=edit&section=1" title="Modifier le code source de la section : Voir aussi"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Compression_(physique)" title="Compression (physique)">Compression</a></li></ul> <style data-mw-deduplicate="TemplateStyles:r194021218">.mw-parser-output .autres-projets>.titre{text-align:center;margin:0.2em 0}.mw-parser-output .autres-projets>ul{margin:0;padding:0}.mw-parser-output .autres-projets>ul>li{list-style:none;margin:0.2em 0;text-indent:0;padding-left:24px;min-height:20px;text-align:left;display:block}.mw-parser-output .autres-projets>ul>li>a{font-style:italic}@media(max-width:720px){.mw-parser-output .autres-projets{float:none}}</style><div class="autres-projets boite-grise boite-a-droite noprint js-interprojets"> <p class="titre">Sur les autres projets Wikimedia :</p> <ul class="noarchive plainlinks"> <li class="commons"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Tension?uselang=fr">Tension mécanique</a>, sur <span class="project">Wikimedia Commons</span></li> </ul> </div> <ul id="bandeau-portail" class="bandeau-portail"><li><span class="bandeau-portail-element"><span class="bandeau-portail-icone"><span class="noviewer" typeof="mw:File"><a href="/wiki/Portail:Physique" title="Portail de la physique"><img alt="icône décorative" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/22/Circle-icons-physics-logo.svg/24px-Circle-icons-physics-logo.svg.png" decoding="async" width="24" height="24" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/22/Circle-icons-physics-logo.svg/36px-Circle-icons-physics-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/22/Circle-icons-physics-logo.svg/48px-Circle-icons-physics-logo.svg.png 2x" data-file-width="512" data-file-height="512" /></a></span></span> <span class="bandeau-portail-texte"><a href="/wiki/Portail:Physique" title="Portail:Physique">Portail de la physique</a></span> </span></li> </ul>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; 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