Hollow Circle Calculator – Calculate Area and Perimeter<\/title>\n <style>\n \/* \u4f7f\u7528\u7279\u5b9a\u7684\u547d\u540d\u7a7a\u95f4\uff0c\u907f\u514d\u6837\u5f0f\u6c61\u67d3 *\/\n .hollow-circle-calculator-widget * {\n margin: 0;\n padding: 0;\n box-sizing: border-box;\n }\n\n .hollow-circle-calculator-widget {\n font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Oxygen-Sans, Ubuntu, Cantarell, \"Helvetica Neue\", sans-serif;\n line-height: 1.6;\n color: #333;\n max-width: 1200px;\n margin: 0 auto;\n padding: 20px;\n \/* \u786e\u4fdd\u8ba1\u7b97\u5668\u4e0d\u4f1a\u5f71\u54cd\u5176\u4ed6\u5143\u7d20 *\/\n position: relative;\n z-index: 1;\n \/* \u9632\u6b62\u5f71\u54cd sticky header *\/\n isolation: isolate;\n }\n\n \/* \u6240\u6709\u9009\u62e9\u5668\u90fd\u6dfb\u52a0\u547d\u540d\u7a7a\u95f4\u524d\u7f00 *\/\n .hollow-circle-calculator-widget .calculator-section {\n margin-bottom: 30px;\n background: #fff;\n padding: 20px;\n border-radius: 8px;\n box-shadow: 0 2px 4px rgba(0,0,0,0.1);\n }\n\n .hollow-circle-calculator-widget h2 {\n color: #000;\n margin-bottom: 15px;\n font-size: 1.5em;\n }\n\n .hollow-circle-calculator-widget .parameter-list {\n display: grid;\n grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));\n gap: 15px;\n margin-bottom: 20px;\n }\n\n .hollow-circle-calculator-widget .parameter-item {\n background: #f8f9fa;\n padding: 10px;\n border-radius: 4px;\n }\n\n .hollow-circle-calculator-widget .calculator-form {\n display: grid;\n grid-template-columns: repeat(2, 1fr);\n gap: 20px;\n margin-bottom: 20px;\n }\n\n .hollow-circle-calculator-widget .input-group {\n display: flex;\n flex-direction: column;\n }\n\n .hollow-circle-calculator-widget label {\n margin-bottom: 5px;\n font-weight: 500;\n }\n\n .hollow-circle-calculator-widget input,\n .hollow-circle-calculator-widget select {\n padding: 8px;\n border: 1px solid #ddd;\n border-radius: 4px;\n font-size: 16px;\n \/* \u786e\u4fdd\u8f93\u5165\u6846\u6837\u5f0f\u4e0d\u53d7\u5f71\u54cd *\/\n background: #fff;\n color: #333;\n }\n\n .hollow-circle-calculator-widget .calculate-btn {\n width: 220px;\n padding: 15px 0;\n grid-column: 1 \/ -1;\n justify-self: center;\n background: #007bff;\n color: white;\n border: none;\n border-radius: 4px;\n cursor: pointer;\n font-size: 16px;\n transition: background 0.3s;\n \/* \u786e\u4fdd\u6309\u94ae\u6837\u5f0f\u4e0d\u53d7\u5f71\u54cd *\/\n text-decoration: none;\n display: inline-block;\n }\n\n .hollow-circle-calculator-widget .calculate-btn:hover {\n background: #0056b3;\n color: #fff;\n }\n\n .hollow-circle-calculator-widget .results {\n margin-top: 20px;\n padding: 20px;\n background: #e9ecef;\n border-radius: 4px;\n }\n\n .hollow-circle-calculator-widget .result-item {\n margin-bottom: 10px;\n font-size: 1.1em;\n }\n\n .hollow-circle-calculator-widget .result-value {\n font-weight: bold;\n color: #007bff;\n }\n\n \/* \u54cd\u5e94\u5f0f\u8c03\u6574 *\/\n @media (max-width: 768px) {\n .hollow-circle-calculator-widget .calculator-form {\n grid-template-columns: 1fr;\n }\n \n .hollow-circle-calculator-widget .parameter-list {\n grid-template-columns: 1fr;\n }\n }\n\n \/* \u91cd\u7f6e\u53ef\u80fd\u5f71\u54cd WordPress \u4e3b\u9898\u7684\u6837\u5f0f *\/\n .hollow-circle-calculator-widget a,\n .hollow-circle-calculator-widget button,\n .hollow-circle-calculator-widget input,\n .hollow-circle-calculator-widget select {\n font-family: inherit;\n line-height: inherit;\n }\n\n \/* \u786e\u4fdd\u8ba1\u7b97\u5668\u5bb9\u5668\u4e0d\u4f1a\u5f71\u54cd\u9875\u9762\u6eda\u52a8 *\/\n .hollow-circle-calculator-widget {\n overflow: visible;\n }\n <\/style>\n<\/head>\n<body>\n <div class=\"hollow-circle-calculator-widget\">\n <div class=\"calculator-section\">\n <h2>Explication des param\u00e8tres<\/h2>\n <div class=\"parameter-list\">\n <div class=\"parameter-item\">\n <strong>Masse (m):<\/strong> The mass of the object. Unit: kilogram (kg).\n <\/div>\n <div class=\"parameter-item\">\n <strong>Rayon ext\u00e9rieur (R) :<\/strong> Le rayon de rotation ext\u00e9rieur. Unit\u00e9\u00a0: millim\u00e8tre (mm).\n <\/div>\n <div class=\"parameter-item\">\n <strong>Rayon int\u00e9rieur (r) :<\/strong> Le rayon de rotation int\u00e9rieur. Unit\u00e9\u00a0: millim\u00e8tre (mm).\n <\/div>\n <div class=\"parameter-item\">\n <strong>Distance (e) :<\/strong> La distance par rapport au centre. Unit\u00e9 : millim\u00e8tre (mm).\n <\/div>\n <\/div>\n <h2>Calculatrice<\/h2>\n <form id=\"calculatorForm\" class=\"calculator-form\" action=\"\">\n <div class=\"input-group\">\n <label for=\"mass\">Masse (m)<\/label>\n <input type=\"number\" id=\"mass\" step=\"any\" min=\"0\" required placeholder=\"kg\">\n <\/div>\n <div class=\"input-group\">\n <label for=\"outerRadius\">Rayon ext\u00e9rieur (R)<\/label>\n <input type=\"number\" id=\"outerRadius\" step=\"any\" min=\"0\" required placeholder=\"mm\">\n <\/div>\n <div class=\"input-group\">\n <label for=\"innerRadius\">Rayon int\u00e9rieur (r)<\/label>\n <input type=\"number\" id=\"innerRadius\" step=\"any\" min=\"0\" required placeholder=\"mm\">\n <\/div>\n <div class=\"input-group\">\n <label for=\"distance\">Distance (e)<\/label>\n <input type=\"number\" id=\"distance\" step=\"any\" min=\"0\" required placeholder=\"mm\">\n <\/div>\n <button type=\"submit\" class=\"calculate-btn\">Calculer<\/button>\n <input type=\"hidden\" name=\"trp-form-language\" value=\"fr\"\/><\/form>\n <\/div>\n <div class=\"calculator-section\" id=\"results-section\" style=\"display: none;\">\n <h2>R\u00e9sultats<\/h2>\n <div id=\"results\" class=\"results\">\n <div class=\"result-item\">\n Moment of Inertia: <span class=\"result-value\" id=\"inertia\"><\/span>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <script>\n document.getElementById('calculatorForm').addEventListener('submit', function(e) {\n e.preventDefault();\n document.getElementById('results-section').style.display = 'none';\n document.getElementById('inertia').textContent = '';\n const mass = parseFloat(document.getElementById('mass').value);\n const outerRadius = parseFloat(document.getElementById('outerRadius').value);\n const innerRadius = parseFloat(document.getElementById('innerRadius').value);\n const distance = parseFloat(document.getElementById('distance').value);\n if (outerRadius <= innerRadius) {\n alert('Outer radius (R) must be greater than inner radius (r)');\n return;\n }\n if (mass <= 0) {\n alert('Mass (m) must be greater than 0');\n return;\n }\n if (distance < 0) {\n alert('Distance (e) must be 0 or greater');\n return;\n }\n const R_cm = outerRadius \/ 10;\n const r_cm = innerRadius \/ 10;\n const inertia = 0.5 * mass * (Math.pow(R_cm, 2) + Math.pow(r_cm, 2));\n document.getElementById('inertia').textContent = `${inertia.toFixed(2)} kg\u00b7cm\u00b2`;\n document.getElementById('results-section').style.display = 'block';\n });\n <\/script>\n<\/body>\n<\/html>","protected":false},"excerpt":{"rendered":"<p>Discover the efficiency and simplicity of our Hollow Circle Moment of Inertia Calculator, designed to assist engineers and students in determining the moment of inertia…<\/p>","protected":false},"author":2,"featured_media":15790,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"pmpro_default_level":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3430],"tags":[3647,3648],"class_list":["post-15788","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cam-indexer-selector","tag-hollow-circle-inertia","tag-moment-of-inertia-calculator","pmpro-has-access"],"acf":[],"jetpack_featured_media_url":"https:\/\/www.mechstream.com\/wp-content\/uploads\/2025\/05\/Hollow-Circle-Moment-of-Inertia-Calculator.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/posts\/15788","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/comments?post=15788"}],"version-history":[{"count":0,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/posts\/15788\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/media\/15790"}],"wp:attachment":[{"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/media?parent=15788"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/categories?post=15788"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/tags?post=15788"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

Discover the efficiency and simplicity of our Hollow Circle Moment of Inertia Calculator, designed to assist engineers and students in determining the moment of inertia for hollow circular sections. This calculator provides quick, accurate results to support your structural analysis and mechanical design projects. Simply input the outer and inner radius to calculate the moment of inertia effortlessly. Ideal for optimizing designs in automotive, aerospace, and construction industries, our tool ensures precision and saves valuable time in your calculations.<\/p>\n\n\n