{"id":2331,"date":"2017-11-23T22:35:50","date_gmt":"2017-11-23T22:35:50","guid":{"rendered":"http:\/\/www.helpingstudents.com.ng\/?p=2331"},"modified":"2019-12-16T21:21:26","modified_gmt":"2019-12-16T21:21:26","slug":"elasticity","status":"publish","type":"post","link":"https:\/\/hstutorial.com\/fr\/elasticity\/","title":{"rendered":"Elasticit\u00e9 - Mat\u00e9riaux \u00e9lastiques et in\u00e9lastiques"},"content":{"rendered":"

This article gives you a summary of Elasticity and types of materials, you will also learn the Hooke’s Law, read more on stress and strain and its formula likewise the Young Modulus, longitudinal stress and strain and finally, the\u00a0modulus of elasticity.<\/p>\n

ELASTICITY<\/h2>\n

Elasticity, This is the ability of a material to regain its original shape and size after been distorted by an external force.<\/p>\n

Elastic Material<\/h3>\n

It is\/they are materials that return to its original shape and size after distorting force has been removed or after deformation.<\/p>\n

\"elasticity\"<\/span><\/p>\n

Inelastic Material<\/h3>\n

It is\/they are materials that do not return to its original shape and size after deformation.<\/p>\n

HOOKE’S LAW<\/strong><\/p>\n

It states that provided that the elastic unit of an elastic material is not exceeded the extension “e” of the material is directly proportional to the load or applied force “f”.<\/p>\n

Formula: F= -KE<\/p>\n

To find the spring constant; K = F \u00f7 Change in length.<\/p>\n

\u00a0STRESS<\/h3>\n

It is the ratio of applied force “F” to the area “A” over which it acts.<\/p>\n

Stress = Force \u00f7 Area<\/p>\n

Unit for stress is “Pa”<\/p>\n

STRAIN<\/h3>\n

It is the relative change in dimension or shape of a body as the result of applied stress.<\/p>\n

Strain = change in length \u00f7 original length.<\/p>\n

LONGITUDINAL STRESS AND STRAIN<\/h3>\n

For wire, rod, and bar there is longitudinal stress that produces a change in length per unit length.<\/p>\n

\"elasticity\"<\/span><\/p>\n

ELASTIC LIMIT<\/h3>\n

It is the maximum stress a body can experience without being permanently deformed<\/p>\n

NB: If the stress exceeds the ultimate strength, the material break.<\/p>\n

MODULUS OF ELASTICITY<\/h3>\n

Provided that the elastic limit is not exceeded and elastic deformation (strain) is directly proportional to the magnitude of the applied force per unit area.<\/p>\n

Formula = stress \u00f7 strain.<\/p>\n

YOUNG MODULUS<\/h3>\n

For materials whose length is much greater than the width or thickness, we are concerned with the longitudinal modulus of elasticity.<\/p>\n

Y= stress \u00f7 strain = F\/A \u00f7 change in length divided by<\/strong> the original length.<\/p>","protected":false},"excerpt":{"rendered":"

Cet article vous donne un r\u00e9sum\u00e9 de l'\u00e9lasticit\u00e9 et des types de mat\u00e9riaux, vous apprendrez \u00e9galement la loi de Hooke, vous en saurez plus sur les contraintes et les d\u00e9formations et leur formule, de m\u00eame que sur la ...<\/p>\n

Elasticit\u00e9 - Mat\u00e9riaux \u00e9lastiques et in\u00e9lastiques<\/span> Lire la suite \"<\/a><\/p>","protected":false},"author":2,"featured_media":4040,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"footnotes":""},"categories":[51],"tags":[199,89],"yoast_head":"\nElasticity - Elastic And Inelastic Materials - HS Tutorial<\/title>\n<meta name=\"description\" content=\"This article gives you a summary of Elasticity and types of materials, you will also learn the Hooke's Law, read more on stress and strain and its formula likewise the Young Modulus, longitudinal stress and strain and finally, the\u00a0modulus of elasticity. 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