{"id":5022,"date":"2025-07-04T10:08:25","date_gmt":"2025-07-04T04:38:25","guid":{"rendered":"https:\/\/study.madeeasy.in\/?p=5022"},"modified":"2025-07-18T15:09:47","modified_gmt":"2025-07-18T09:39:47","slug":"stress-and-strain","status":"publish","type":"post","link":"https:\/\/www.madeeasy.in\/study\/me\/strength-of-materials\/stress-and-strain","title":{"rendered":"Stress and Strain"},"content":{"rendered":"<h2>Stress and Strain<\/h2>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_1 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-light-blue 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\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.madeeasy.in\/study\/me\/strength-of-materials\/stress-and-strain\/#Stress\" >Stress<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.madeeasy.in\/study\/me\/strength-of-materials\/stress-and-strain\/#Strain\" >Strain<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.madeeasy.in\/study\/me\/strength-of-materials\/stress-and-strain\/#Engineering-stress-strain-curve-for-mild-steel-for-tension-under-static-loading\" >Engineering stress strain curve for mild steel for tension under static-loading.<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"Stress\"><\/span>Stress<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>It is the resistance offered by a body to deformation.<\/p>\n<ul>\n<li>Nominal stress (Engineering stress) = Load\/ Original area<\/li>\n<li>Actual\/True stress = Load\/ Changed(Actual) area<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Strain\"><\/span>Strain<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>Deformation per unit length in the direction of deformation is known as strain. It is dimensionless.<\/li>\n<li>Strain = Change in dimension\/ Original dimension<\/li>\n<\/ul>\n<h4><span class=\"ez-toc-section\" id=\"Engineering-stress-strain-curve-for-mild-steel-for-tension-under-static-loading\"><\/span><strong>Engineering stress strain curve for mild steel for tension under static-loading.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul>\n<li>OA \u2014 Straight line (proportional region, Hookes law is valid)<\/li>\n<li>OB \u2014 Elastic region<\/li>\n<li>BC\u2032 \u2014 Elasto plastic region<\/li>\n<li>CD \u2014 Perfectly plastic region<\/li>\n<li>DE \u2014 Strain hardening<\/li>\n<li>EF \u2014 Necking region<\/li>\n<li>A \u2014 Limit of proportionality, stress strain curve ceases to be a straight line.<\/li>\n<li>B \u2014 Elastic limit<\/li>\n<li>D \u2014 Strain hardening starts<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5023 size-full\" src=\"https:\/\/study.madeeasy.in\/wp-content\/uploads\/2025\/07\/Strain.jpg\" alt=\"Strain\" width=\"464\" height=\"186\" srcset=\"https:\/\/www.madeeasy.in\/study\/wp-content\/uploads\/2025\/07\/Strain.jpg 464w, https:\/\/www.madeeasy.in\/study\/wp-content\/uploads\/2025\/07\/Strain-300x120.jpg 300w\" sizes=\"auto, (max-width: 464px) 100vw, 464px\" \/><\/p>\n<ul>\n<li>Slope of OA=Modulus of elasticity (Young\u2019s Modulus): It is constant of proportionality which is defined as the intensity of stress that causes unit strain.<\/li>\n<li>Plastic strain is 10 to 15 times elastic strain.<\/li>\n<li>Fracture strain (\u2208f) depends on percentage carbon in steel.<\/li>\n<li>When carbon percentage increases then fracture strain decreases and yield stress increases.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5024 size-full\" src=\"https:\/\/study.madeeasy.in\/wp-content\/uploads\/2025\/07\/Type-of-Tension.jpg\" alt=\" Type of Tension\" width=\"411\" height=\"490\" srcset=\"https:\/\/www.madeeasy.in\/study\/wp-content\/uploads\/2025\/07\/Type-of-Tension.jpg 411w, https:\/\/www.madeeasy.in\/study\/wp-content\/uploads\/2025\/07\/Type-of-Tension-252x300.jpg 252w\" sizes=\"auto, (max-width: 411px) 100vw, 411px\" \/><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Stress and Strain Stress It is the resistance offered by a body to deformation. Nominal stress (Engineering stress) = Load\/<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1619,10],"tags":[689,1631,1632],"class_list":["post-5022","post","type-post","status-publish","format-standard","hentry","category-strength-of-materials","category-me","tag-strain","tag-type-of-tension","tag-youngs-modulus"],"_links":{"self":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/posts\/5022","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/comments?post=5022"}],"version-history":[{"count":0,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/posts\/5022\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/media?parent=5022"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/categories?post=5022"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/tags?post=5022"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}