{"id":100247,"date":"2026-02-15T20:29:34","date_gmt":"2026-02-15T20:29:34","guid":{"rendered":"https:\/\/vibromera.eu\/?post_type=calculator&#038;p=100247"},"modified":"2026-03-05T15:40:59","modified_gmt":"2026-03-05T15:40:59","slug":"stress-calculator","status":"publish","type":"calculator","link":"https:\/\/vibromera.eu\/nb\/calculators\/stress-calculator\/","title":{"rendered":"Spenningskalkulator \u2014 Strekk, skj\u00e6r og b\u00f8ying | Vibromera"},"content":{"rendered":"\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"WebApplication\",\"name\":\"Stress Calculator\",\"alternateName\":[\"Tensile Stress Calculator\",\"Shear Stress Calculator\",\"Bending Stress Calculator\"],\"description\":\"Free online calculator for tensile, shear, and bending stress. Enter force, area, moment, section modulus.\",\"url\":\"https:\/\/vibromera.eu\/calculators\/stress-calculator\/\",\"applicationCategory\":\"Engineering Calculator\",\"operatingSystem\":\"Any (Web Browser)\",\"offers\":{\"@type\":\"Offer\",\"price\":\"0\",\"priceCurrency\":\"EUR\"},\"creator\":{\"@type\":\"Organization\",\"name\":\"Vibromera\",\"url\":\"https:\/\/vibromera.eu\/\"},\"datePublished\":\"2024-01-01\",\"dateModified\":\"2025-02-14\",\"inLanguage\":\"en\",\"isAccessibleForFree\":true,\"featureList\":[\"Tensile\/compressive stress\",\"Shear stress\",\"Bending stress\",\"Auto-calculation\",\"Combined stress display\"],\"keywords\":\"stress calculator, tensile stress, shear stress, bending stress, sigma, tau\"}\n<\/script>\n\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"What is stress in engineering?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Stress is the internal force per unit area within a material. It measures how much force the material's cross-section must resist. The basic formula is \u03c3 = F\/A, where F is force (N) and A is cross-sectional area (mm\u00b2). Units are typically MPa (N\/mm\u00b2).\"}},\n{\"@type\":\"Question\",\"name\":\"What is the difference between tensile and compressive stress?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Tensile stress occurs when forces pull the material apart (positive \u03c3), while compressive stress occurs when forces push it together (negative \u03c3). The formula \u03c3 = F\/A is the same, but the direction of force differs. Many materials have different strengths in tension and compression.\"}},\n{\"@type\":\"Question\",\"name\":\"What is shear stress?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Shear stress \u03c4 = F\/A acts parallel to the cross-section surface, tending to slide one part of the material over another. Common in bolts, pins, and rivets. For a bolt in single shear: \u03c4 = F\/(\u03c0d\u00b2\/4).\"}},\n{\"@type\":\"Question\",\"name\":\"What is bending stress?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Bending stress \u03c3 = M\/W (or M\u00b7c\/I) occurs in beams and other members subject to bending moments. It varies linearly across the cross-section \u2014 maximum at the extreme fibers, zero at the neutral axis. M is bending moment, W is section modulus.\"}},\n{\"@type\":\"Question\",\"name\":\"What are typical allowable stresses for steel?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"For structural steel (S235): \u03c3_allow \u2248 140\u2013160 MPa (with FoS ~1.5). For S355: \u03c3_allow \u2248 210\u2013240 MPa. High-strength bolts (grade 8.8): \u03c4_allow \u2248 375 MPa. Always check the applicable design standard.\"}}\n]}\n<\/script>\n\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[\n{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/vibromera.eu\/\"},\n{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Calculators\",\"item\":\"https:\/\/vibromera.eu\/calculators\/\"},\n{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Stress Calculator\",\"item\":\"https:\/\/vibromera.eu\/calculators\/stress-calculator\/\"}\n]}\n<\/script>\n\n<link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n\n<link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&#038;family=JetBrains+Mono:wght@400;500;600&#038;family=Fraunces:opsz,wght@9..144,700;9..144,800&#038;display=swap\" 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li{margin-bottom:3px}.vc-related{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.vc-related-link{display:inline-block;padding:8px 16px;font-family:var(--vc-font);font-size:13px;font-weight:600;background:var(--vc-surface-alt);color:var(--vc-ink-secondary);border:1px solid var(--vc-border);border-radius:var(--vc-radius);text-decoration:none;transition:all 0.15s}.vc-related-link:hover{border-color:var(--vc-accent);color:var(--vc-accent);background:var(--vc-accent-light)}.vc-promo{margin-top:24px;padding:20px;background:linear-gradient(135deg,var(--vc-accent-light),var(--vc-surface));border:1px solid var(--vc-border);border-radius:var(--vc-radius-lg);display:flex;align-items:center;gap:16px}.vc-promo-text{flex:1;font-size:14px;color:var(--vc-ink-secondary)}.vc-promo-text strong{color:var(--vc-ink)}.vc-promo-link{padding:8px 20px;font-size:13px;font-weight:700;color:#fff;background:var(--vc-accent);border-radius:var(--vc-radius);text-decoration:none;white-space:nowrap;transition:background 0.15s}.vc-promo-link:hover{background:var(--vc-accent-hover)}.vc-footer{text-align:center;padding:32px 16px;font-size:13px;color:var(--vc-ink-muted)}.vc-footer a{color:var(--vc-accent);text-decoration:none}.vc-footer a:hover{text-decoration:underline}.vc-footer-links{margin-top:8px;font-size:12px}.vc-footer-links a{margin:0 8px}@media print{.vc-section-body{max-height:none!important}.vc-faq-a{max-height:none!important}.vc-results{max-height:none!important;padding:24px!important}.vc-copy-btn,.vc-section-chevron,.vc-faq-chevron,.vc-presets,.vc-promo{display:none!important}}\n<\/style>\n\n<div class=\"vc-calculator\" id=\"vc-stress-calc\">\n<header class=\"vc-header\">\n    <p class=\"vc-header-eyebrow\">Free Engineering Tool<\/p>\n    <h1 class=\"vc-header-title\">Stress Calculator<\/h1>\n    <p class=\"vc-header-subtitle\">Calculate tensile\/compressive stress (\u03c3 = F\/A), shear stress (\u03c4 = F\/A), and bending stress (\u03c3 = M\/W) for common loading scenarios.<\/p>\n    <div class=\"vc-badges\"><span class=\"vc-badge\">\u03c3 = F\/A<\/span><span class=\"vc-badge\">\u03c4 = F\/A<\/span><span class=\"vc-badge\">\u03c3 = M\/W<\/span><span class=\"vc-badge\">#166<\/span><\/div>\n<\/header>\n\n<div class=\"vc-card\">\n    <form class=\"vc-form\" id=\"vc-form\" autocomplete=\"off\">\n        <div class=\"vc-form-grid\">\n            <div class=\"vc-field vc-field-full\">\n                <label class=\"vc-label\" for=\"vc-type\">Stress Type<\/label>\n                <select class=\"vc-select\" id=\"vc-type\">\n                    <option value=\"tensile\" selected>Tensile \/ Compressive (\u03c3 = F\/A)<\/option>\n                    <option value=\"shear\">Shear (\u03c4 = F\/A)<\/option>\n                    <option value=\"bending\">Bending (\u03c3 = M\/W)<\/option>\n                <\/select>\n            <\/div>\n            <div class=\"vc-field\" id=\"vc-field-force\">\n                <label class=\"vc-label\" for=\"vc-F\">Force F <span class=\"vc-label-hint\">(kN)<\/span><\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-F\" inputmode=\"decimal\" step=\"any\" min=\"0\" placeholder=\"e.g. 50\" value=\"50\">\n            <\/div>\n            <div class=\"vc-field\" id=\"vc-field-area\">\n                <label class=\"vc-label\" for=\"vc-A\">Cross-Section Area A <span class=\"vc-label-hint\">(mm\u00b2)<\/span><\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-A\" inputmode=\"decimal\" step=\"any\" min=\"0\" placeholder=\"e.g. 500\" value=\"500\">\n            <\/div>\n            <div class=\"vc-field\" id=\"vc-field-moment\" style=\"display:none\">\n                <label class=\"vc-label\" for=\"vc-M\">Bending Moment M <span class=\"vc-label-hint\">(kN\u00b7m)<\/span><\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-M\" inputmode=\"decimal\" step=\"any\" min=\"0\" placeholder=\"e.g. 15\" value=\"15\">\n            <\/div>\n            <div class=\"vc-field\" id=\"vc-field-W\" style=\"display:none\">\n                <label class=\"vc-label\" for=\"vc-W\">Section Modulus W <span class=\"vc-label-hint\">(cm\u00b3)<\/span><\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-W\" inputmode=\"decimal\" step=\"any\" min=\"0\" placeholder=\"e.g. 557\" value=\"557\">\n            <\/div>\n        <\/div>\n        <div class=\"vc-presets\">\n            <div class=\"vc-presets-label\">Quick presets<\/div>\n            <button type=\"button\" class=\"vc-preset-btn\" data-type=\"tensile\" data-F=\"50\" data-A=\"500\">Rod 50kN \/ 500mm\u00b2<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-type=\"shear\" data-F=\"30\" data-A=\"314\">M20 bolt shear<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-type=\"bending\" data-M=\"15\" data-W=\"557\">IPE 300 \/ 15kN\u00b7m<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-type=\"tensile\" data-F=\"100\" data-A=\"1000\">Bar 100kN \/ 1000mm\u00b2<\/button>\n        <\/div>\n    <\/form>\n    <div class=\"vc-results\" id=\"vc-results\">\n        <div class=\"vc-results-head\"><h2 class=\"vc-results-title\">Results<\/h2><button type=\"button\" class=\"vc-copy-btn\" id=\"vc-copy-btn\"><svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><rect x=\"9\" y=\"9\" width=\"13\" height=\"13\" rx=\"2\"\/><path d=\"M5 15H4a2 2 0 01-2-2V4a2 2 0 012-2h9a2 2 0 012 2v1\"\/><\/svg> Copy<\/button><\/div>\n        <div class=\"vc-result-grid\">\n            <div class=\"vc-rcard vc-rcard-primary\"><div class=\"vc-rcard-label\">Calculated Stress<\/div><div class=\"vc-rcard-value\" id=\"vc-r-stress\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Stress Type<\/div><div class=\"vc-rcard-value\" id=\"vc-r-type\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Stress in ksi<\/div><div class=\"vc-rcard-value\" id=\"vc-r-ksi\">\u2014<\/div><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<div class=\"vc-section vc-open\" id=\"vc-sec-theory\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"true\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\ud83d\udcd8<\/span><span class=\"vc-section-title\">Theory &amp; Formulas<\/span><\/span><svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button>\n    <div class=\"vc-section-body\"><div class=\"vc-section-inner vc-theory\">\n        <h3>Tensile \/ Compressive Stress<\/h3>\n        <div class=\"vc-formula-box\" id=\"vc-katex-1\"><\/div>\n        <h3>Shear Stress<\/h3>\n        <div class=\"vc-formula-box\" id=\"vc-katex-2\"><\/div>\n        <h3>Bending Stress<\/h3>\n        <div class=\"vc-formula-box\" id=\"vc-katex-3\"><\/div>\n        <div class=\"vc-info-box\"><p><strong>\u2139\ufe0f<\/strong> 1 MPa = 1 N\/mm\u00b2 = 0.145 ksi. Steel yield strengths typically 235\u20131000 MPa.<\/p><\/div>\n    <\/div><\/div>\n<\/div>\n\n<div class=\"vc-section\" id=\"vc-sec-related\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\ud83d\udd17<\/span><span class=\"vc-section-title\">Related Calculators<\/span><\/span><svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button>\n    <div class=\"vc-section-body\"><div class=\"vc-section-inner\"><div class=\"vc-related\">\n        <a class=\"vc-related-link\" href=\"\/calculators\/safety-factor-calculator\/\">Safety Factor<\/a>\n        <a class=\"vc-related-link\" href=\"\/calculators\/beam-bending-calculator\/\">Beam Bending<\/a>\n        <a class=\"vc-related-link\" href=\"\/calculators\/section-moment-of-inertia\/\">Section Properties<\/a>\n        <a class=\"vc-related-link\" href=\"\/calculators\/stress-concentration-factor\/\">Stress Concentration<\/a>\n    <\/div><\/div><\/div>\n<\/div>\n\n<div class=\"vc-section\" id=\"vc-sec-faq\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\u2753<\/span><span class=\"vc-section-title\">Frequently Asked Questions<\/span><\/span><svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button>\n    <div class=\"vc-section-body\"><div class=\"vc-section-inner\"><div class=\"vc-faq-list\" id=\"vc-faq-list\"><\/div><\/div><\/div>\n<\/div>\n\n<div class=\"vc-promo\"><div class=\"vc-promo-text\"><strong>Vibromera \u2014 Portable Balancing &amp; Vibration Analysis<\/strong><br>Professional field balancing instruments and software. Used in 50+ countries.<\/div><a class=\"vc-promo-link\" href=\"https:\/\/vibromera.eu\/\" target=\"_blank\" rel=\"noopener\">Learn More<\/a><\/div>\n<footer class=\"vc-footer\"><p>\u00a9 2024\u20132025 <a href=\"https:\/\/vibromera.eu\/\">Vibromera<\/a> \u2014 Engineering Calculators<\/p><p style=\"font-size:12px;margin-top:4px;\">Standard stress formulas. Last updated: February 2025<\/p><div class=\"vc-footer-links\"><a href=\"\/calculators\/engineering-calculators\/\">All Calculators<\/a><a href=\"https:\/\/vibromera.eu\/contacts\/\">Contact<\/a><\/div><\/footer>\n<\/div>\n\n<script src=\"https:\/\/cdn.jsdelivr.net\/npm\/katex@0.16.11\/dist\/katex.min.js\"><\/script>\n<script>\n(function(){\n'use strict';\nvar SLUG='stress-calculator';\nfunction $(id){return document.getElementById(id)}\nfunction fmt(n,d){if(isNaN(n)||!isFinite(n))return'\u2014';var f=n.toFixed(d===undefined?2:d);return f.replace(\/(\\.\\d*?)0+$\/,'$1').replace(\/\\.$\/,'')}\n\nfunction updateUI(){\n    var t=$('vc-type').value;\n    var isBend=(t==='bending');\n    $('vc-field-force').style.display=isBend?'none':'';\n    $('vc-field-area').style.display=isBend?'none':'';\n    $('vc-field-moment').style.display=isBend?'':'none';\n    $('vc-field-W').style.display=isBend?'':'none';\n}\n\nfunction calculate(){\n    updateUI();\n    var t=$('vc-type').value;\n    var stress=0;\n    if(t==='bending'){\n        var M=parseFloat($('vc-M').value);var W=parseFloat($('vc-W').value);\n        if(!M||M<=0||!W||W<=0){$('vc-results').classList.remove('vc-visible');return}\n        stress=(M*1e6)\/(W*1e3);\/\/ kN\u00b7m to N\u00b7mm \/ cm\u00b3 to mm\u00b3 \u2192 MPa\n    } else {\n        var F=parseFloat($('vc-F').value);var A=parseFloat($('vc-A').value);\n        if(!F||F<=0||!A||A<=0){$('vc-results').classList.remove('vc-visible');return}\n        stress=(F*1e3)\/A;\/\/ kN to N \/ mm\u00b2 \u2192 MPa\n    }\n    var ksi=stress*0.145038;\n    var label=t==='tensile'?'\u03c3 (Tensile)':t==='shear'?'\u03c4 (Shear)':'\u03c3 (Bending)';\n\n    $('vc-r-stress').innerHTML=fmt(stress,2)+' <span class=\"vc-rcard-unit\">MPa<\/span>';\n    $('vc-r-type').innerHTML='<span style=\"font-size:16px\">'+label+'<\/span>';\n    $('vc-r-ksi').innerHTML=fmt(ksi,2)+' <span class=\"vc-rcard-unit\">ksi<\/span>';\n    $('vc-results').classList.add('vc-visible');\n\n    saveHistory({type:t,stress:stress,_summary:label+'='+fmt(stress,1)+' MPa'});\n}\n\ndocument.querySelectorAll('.vc-preset-btn').forEach(function(btn){btn.addEventListener('click',function(e){e.preventDefault();\n    $('vc-type').value=this.getAttribute('data-type');\n    if(this.getAttribute('data-F'))$('vc-F').value=this.getAttribute('data-F');\n    if(this.getAttribute('data-A'))$('vc-A').value=this.getAttribute('data-A');\n    if(this.getAttribute('data-M'))$('vc-M').value=this.getAttribute('data-M');\n    if(this.getAttribute('data-W'))$('vc-W').value=this.getAttribute('data-W');\n    calculate();\n})});\n\n$('vc-form').addEventListener('input',calculate);\n$('vc-form').addEventListener('change',calculate);\n\n$('vc-copy-btn').addEventListener('click',function(){\n    var text='Stress Calculation\\n\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\\nStress: '+$('vc-r-stress').textContent+'\\nType: '+$('vc-r-type').textContent+'\\n\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\\nvibromera.eu';\n    if(navigator.clipboard){navigator.clipboard.writeText(text).then(function(){var b=$('vc-copy-btn');b.classList.add('vc-copied');b.innerHTML='<svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><polyline points=\"20 6 9 17 4 12\"\/><\/svg> Copied!';setTimeout(function(){b.classList.remove('vc-copied');b.innerHTML='<svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><rect x=\"9\" y=\"9\" width=\"13\" height=\"13\" rx=\"2\"\/><path d=\"M5 15H4a2 2 0 01-2-2V4a2 2 0 012-2h9a2 2 0 012 2v1\"\/><\/svg> Copy';},2000)})}\n});\n\ndocument.querySelectorAll('.vc-section-toggle').forEach(function(btn){btn.addEventListener('click',function(){var s=this.closest('.vc-section');s.classList.toggle('vc-open');this.setAttribute('aria-expanded',s.classList.contains('vc-open'))})});\n\nvar faqData=[\n    {q:'What is stress in engineering?',a:'<p>Stress is internal force per unit area within a material. \u03c3 = F\/A where F is force (N) and A is area (mm\u00b2). Units: MPa = N\/mm\u00b2.<\/p>'},\n    {q:'What is the difference between tensile and compressive stress?',a:'<p>Tensile stress pulls material apart (positive \u03c3). Compressive stress pushes it together (negative \u03c3). Formula is the same: \u03c3 = F\/A.<\/p>'},\n    {q:'What is shear stress?',a:'<p>Shear stress \u03c4 acts parallel to the surface, tending to slide material layers. For bolts in single shear: \u03c4 = F \/ (\u03c0\u00b7d\u00b2\/4).<\/p>'},\n    {q:'What is bending stress?',a:'<p>Bending stress \u03c3 = M\/W occurs in beams under moment M. It varies linearly \u2014 max at extreme fiber, zero at neutral axis. W is section modulus.<\/p>'},\n    {q:'What are typical allowable stresses for steel?',a:'<p>S235: \u03c3_allow \u2248 140\u2013160 MPa. S355: \u2248 210\u2013240 MPa. Bolt 8.8: \u03c4_allow \u2248 375 MPa. Always verify with design codes.<\/p>'}\n];\nvar fl=$('vc-faq-list');faqData.forEach(function(f){fl.innerHTML+='<div class=\"vc-faq-item\"><button type=\"button\" class=\"vc-faq-q\"><span>'+f.q+'<\/span><svg class=\"vc-faq-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button><div class=\"vc-faq-a\"><div class=\"vc-faq-a-inner\">'+f.a+'<\/div><\/div><\/div>'});\nfl.addEventListener('click',function(e){var b=e.target.closest('.vc-faq-q');if(!b)return;b.closest('.vc-faq-item').classList.toggle('vc-open')});\n\nfunction saveHistory(entry){var key='vc_history_'+SLUG;var arr=[];try{arr=JSON.parse(localStorage.getItem(key))||[]}catch(e){}entry._ts=new Date().toISOString();arr.unshift(entry);if(arr.length>10)arr=arr.slice(0,10);try{localStorage.setItem(key,JSON.stringify(arr))}catch(e){}}\n\nfunction renderFormulas(){try{\n    katex.render('\\\\sigma = \\\\frac{F}{A} \\\\quad [\\\\text{MPa}]',$('vc-katex-1'),{displayMode:true,throwOnError:false});\n    katex.render('\\\\tau = \\\\frac{F}{A} \\\\quad [\\\\text{MPa}]',$('vc-katex-2'),{displayMode:true,throwOnError:false});\n    katex.render('\\\\sigma_{bend} = \\\\frac{M}{W} = \\\\frac{M \\\\cdot c}{I} \\\\quad [\\\\text{MPa}]',$('vc-katex-3'),{displayMode:true,throwOnError:false});\n}catch(e){}}\n\nfunction init(){renderFormulas();calculate()}\nif(document.readyState==='loading'){document.addEventListener('DOMContentLoaded',init)}else{init()}\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Gratis spenningskalkulator p\u00e5 nett. Beregn strekkspenning \u03c3=F\/A, skj\u00e6rspenning \u03c4=F\/A og b\u00f8yespenning \u03c3=M\/W. Skriv inn kraft, areal, moment og tverrsnittsmodul.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-100247","calculator","type-calculator","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator\/100247","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator"}],"about":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/types\/calculator"}],"version-history":[{"count":2,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator\/100247\/revisions"}],"predecessor-version":[{"id":100765,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator\/100247\/revisions\/100765"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/media?parent=100247"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/categories?post=100247"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/tags?post=100247"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}