{"id":15495,"date":"2025-04-17T00:24:58","date_gmt":"2025-04-17T00:24:58","guid":{"rendered":"https:\/\/www.mechstream.com\/?p=15495"},"modified":"2025-04-17T00:25:01","modified_gmt":"2025-04-17T00:25:01","slug":"shaft-stiffness-and-force-calculator","status":"publish","type":"post","link":"https:\/\/www.mechstream.com\/ar\/shaft-stiffness-and-force-calculator\/","title":{"rendered":"\u062d\u0627\u0633\u0628\u0629 \u0635\u0644\u0627\u0628\u0629 \u0627\u0644\u0639\u0645\u0648\u062f \u0648\u0627\u0644\u0642\u0648\u0629"},"content":{"rendered":"<p class=\"wp-block-paragraph\">\u0627\u0643\u062a\u0634\u0641 \u062f\u0642\u0629 \u0627\u0644\u0647\u0646\u062f\u0633\u0629 \u0645\u0639 \u062d\u0627\u0633\u0628\u0629 \u0635\u0644\u0627\u0628\u0629 \u0648\u0642\u0648\u0629 \u0639\u0645\u0648\u062f \u0627\u0644\u062f\u0648\u0631\u0627\u0646. \u0635\u064f\u0645\u0645\u062a \u0647\u0630\u0647 \u0627\u0644\u0623\u062f\u0627\u0629 \u062e\u0635\u064a\u0635\u064b\u0627 \u0644\u0645\u062d\u062a\u0631\u0641\u064a \u0627\u0644\u0645\u064a\u0643\u0627\u0646\u064a\u0643\u0627\u060c \u062d\u064a\u062b \u062a\u0633\u0627\u0639\u062f\u0643 \u0639\u0644\u0649 \u062a\u062d\u062f\u064a\u062f \u0635\u0644\u0627\u0628\u0629 \u0639\u0645\u0648\u062f \u0627\u0644\u062f\u0648\u0631\u0627\u0646 \u0648\u0627\u0644\u0642\u0648\u0629 \u0627\u0644\u0645\u0637\u0644\u0648\u0628\u0629 \u0644\u0645\u062e\u062a\u0644\u0641 \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a. \u062d\u0633\u0651\u0646 \u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u062a\u0635\u0645\u064a\u0645 \u0648\u0627\u0644\u062a\u062d\u0644\u064a\u0644 \u0644\u062f\u064a\u0643\u060c \u0645\u0645\u0627 \u064a\u0636\u0645\u0646 \u0644\u0643 \u0627\u0644\u0623\u062f\u0627\u0621 \u0627\u0644\u0623\u0645\u062b\u0644 \u0648\u064a\u0642\u0644\u0644 \u0645\u0646 \u0627\u062d\u062a\u0645\u0627\u0644\u064a\u0629 \u062d\u062f\u0648\u062b \u0623\u0639\u0637\u0627\u0644 \u0645\u064a\u0643\u0627\u0646\u064a\u0643\u064a\u0629. \u0628\u0641\u0636\u0644 \u0633\u0647\u0648\u0644\u0629 \u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0647\u0627 \u0648\u062f\u0642\u062a\u0647\u0627 \u0627\u0644\u0639\u0627\u0644\u064a\u0629\u060c \u062a\u064f\u0639\u062f \u062d\u0627\u0633\u0628\u062a\u0646\u0627 \u0645\u0631\u062c\u0639\u064b\u0627 \u0623\u0633\u0627\u0633\u064a\u064b\u0627 \u0644\u0644\u0645\u0647\u0646\u062f\u0633\u064a\u0646 \u0648\u0627\u0644\u0645\u0635\u0645\u0645\u064a\u0646 \u0627\u0644\u0630\u064a\u0646 \u064a\u0633\u0639\u0648\u0646 \u0625\u0644\u0649 \u062a\u062d\u0633\u064a\u0646 \u0645\u0648\u062b\u0648\u0642\u064a\u0629 \u0648\u0643\u0641\u0627\u0621\u0629 \u0645\u0634\u0627\u0631\u064a\u0639\u0647\u0645. \u0643\u0646 \u0631\u0627\u0626\u062f\u064b\u0627 \u0641\u064a \u0645\u062c\u0627\u0644\u0643 \u0645\u0646 \u062e\u0644\u0627\u0644 \u062f\u0645\u062c \u0623\u062f\u0648\u0627\u062a \u062d\u0633\u0627\u0628\u064a\u0629 \u0645\u062a\u0642\u062f\u0645\u0629 \u0641\u064a \u0633\u064a\u0631 \u0639\u0645\u0644\u0643. \u0627\u0633\u062a\u0643\u0634\u0641 \u062d\u0627\u0633\u0628\u062a\u0646\u0627 \u0627\u0644\u064a\u0648\u0645!<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"503\" src=\"https:\/\/www.mechstream.com\/wp-content\/uploads\/2025\/04\/8e7dd64d-89be-4809-abfb-84b75c92d003-1024x503.png\" loading=\"lazy\" alt=\"\u062d\u0627\u0633\u0628\u0629 \u0635\u0644\u0627\u0628\u0629 \u0627\u0644\u0639\u0645\u0648\u062f \u0648\u0627\u0644\u0642\u0648\u0629\" class=\"wp-image-15497\" srcset=\"https:\/\/www.mechstream.com\/wp-content\/uploads\/2025\/04\/8e7dd64d-89be-4809-abfb-84b75c92d003-1024x503.png 1024w, https:\/\/www.mechstream.com\/wp-content\/uploads\/2025\/04\/8e7dd64d-89be-4809-abfb-84b75c92d003-300x147.png 300w, https:\/\/www.mechstream.com\/wp-content\/uploads\/2025\/04\/8e7dd64d-89be-4809-abfb-84b75c92d003-768x377.png 768w, https:\/\/www.mechstream.com\/wp-content\/uploads\/2025\/04\/8e7dd64d-89be-4809-abfb-84b75c92d003-100x49.png 100w, https:\/\/www.mechstream.com\/wp-content\/uploads\/2025\/04\/8e7dd64d-89be-4809-abfb-84b75c92d003-700x344.png 700w, https:\/\/www.mechstream.com\/wp-content\/uploads\/2025\/04\/8e7dd64d-89be-4809-abfb-84b75c92d003.png 1091w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n    <title>\u062d\u0627\u0633\u0628\u0629 \u0635\u0644\u0627\u0628\u0629 \u0627\u0644\u0639\u0645\u0648\u062f<\/title>\n    <style>\n        \/* \u4f7f\u7528\u7279\u5b9a\u7684\u7c7b\u540d\u524d\u7f00\uff0c\u907f\u514d\u6837\u5f0f\u51b2\u7a81 *\/\n        .shaft-calculator {\n            max-width: 1200px;\n            margin: 0 auto;\n            padding: 20px;\n            font-family: inherit;\n            position: relative;\n            z-index: 1;\n        }\n\n        .shaft-calculator .section {\n            margin-bottom: 30px;\n            position: relative;\n        }\n\n        .shaft-calculator .parameters-grid {\n            display: grid;\n            grid-template-columns: repeat(3, 1fr);\n            gap: 20px;\n            margin-bottom: 20px;\n        }\n\n        .shaft-calculator .parameter-explanation {\n            background: #f8f9fa;\n            padding: 15px;\n            border-radius: 4px;\n            margin-bottom: 15px;\n        }\n\n        .shaft-calculator .parameter-explanation h3 {\n            color: #333;\n            margin: 0 0 10px 0;\n            font-size: 16px;\n        }\n\n        .shaft-calculator .parameter-explanation p {\n            margin: 5px 0;\n            color: #666;\n            font-size: 14px;\n        }\n\n        .shaft-calculator .unit-info {\n            color: #007bff !important;\n            font-size: 13px !important;\n        }\n\n        .shaft-calculator .calculator-inputs {\n            display: grid;\n            grid-template-columns: repeat(3, 1fr);\n            gap: 20px;\n            margin-bottom: 20px;\n        }\n\n        .shaft-calculator .input-group {\n            display: flex;\n            flex-direction: column;\n            gap: 5px;\n        }\n\n        .shaft-calculator .input-group label {\n            font-weight: 500;\n            color: #333;\n        }\n\n        .shaft-calculator .input-group input,\n        .shaft-calculator .input-group select {\n            padding: 8px;\n            border: 1px solid #ddd;\n            border-radius: 4px;\n            font-size: 14px;\n            width: 100%;\n            box-sizing: border-box;\n        }\n\n        .shaft-calculator .input-group input:focus,\n        .shaft-calculator .input-group select:focus {\n            border-color: #007bff;\n            outline: none;\n            box-shadow: 0 0 0 2px rgba(0,123,255,0.25);\n        }\n\n        .shaft-calculator .section h2 {\n            color: #333;\n            margin-bottom: 20px;\n            padding-bottom: 10px;\n            font-size: 1.5em;\n            font-weight: 600;\n        }\n\n        .shaft-calculator .calculate-btn {\n            background-color: #007bff;\n            color: white;\n            padding: 12px 24px;\n            border: none;\n            border-radius: 4px;\n            cursor: pointer;\n            font-size: 16px;\n            margin: 20px auto;\n            display: block;\n            min-width: 200px;\n            transition: background-color 0.3s;\n        }\n\n        .shaft-calculator .calculate-btn:hover {\n            background-color: #0056b3;\n            color: #ffffff;\n        }\n\n        .shaft-calculator .results {\n            display: none;\n            margin-top: 20px;\n            padding: 20px;\n            background-color: #f8f9fa;\n            border-radius: 4px;\n            box-shadow: 0 2px 4px rgba(0,0,0,0.1);\n        }\n\n        .shaft-calculator .result-item {\n            margin: 10px 0;\n            font-size: 16px;\n            display: flex;\n            justify-content: space-between;\n            align-items: center;\n            padding: 12px;\n            border-bottom: 1px solid #eee;\n            background-color: #fff;\n        }\n\n        .shaft-calculator .result-label {\n            color: #333;\n            font-weight: 500;\n        }\n\n        .shaft-calculator .result-value-container {\n            display: flex;\n            align-items: center;\n            gap: 5px;\n        }\n\n        .shaft-calculator .result-value {\n            font-weight: bold;\n            color: #28a745;\n            font-size: 1.1em;\n        }\n\n        @media (max-width: 768px) {\n            .shaft-calculator .parameters-grid,\n            .shaft-calculator .calculator-inputs {\n                grid-template-columns: 1fr;\n            }\n        }\n    <\/style>\n<\/head>\n<body>\n    <div class=\"shaft-calculator\">\n        <!-- Parameters Explanation Section -->\n        <div class=\"section\">\n            <h2>\u062d\u062f\u0648\u062f<\/h2>\n            <div class=\"parameters-grid\">\n                <div class=\"parameter-explanation\">\n                    <h3>\u0627\u0644\u0642\u0648\u0629 \u0627\u0644\u0645\u062d\u0648\u0631\u064a\u0629 (\u0642\u062f\u0645)<\/h3>\n                    <p>\u0627\u0644\u0642\u0648\u0629 \u0627\u0644\u0645\u0624\u062b\u0631\u0629 \u0639\u0644\u0649 \u0637\u0648\u0644 \u0645\u062d\u0648\u0631 \u0627\u0644\u0639\u0645\u0648\u062f<\/p>\n                    <p class=\"unit-info\">\u0627\u0644\u0648\u062d\u062f\u0629: \u0646\u064a\u0648\u062a\u0646<\/p>\n                <\/div>\n                <div class=\"parameter-explanation\">\n                    <h3>\u0627\u0644\u0642\u0648\u0629 \u0627\u0644\u0634\u0639\u0627\u0639\u064a\u0629 (Fr)<\/h3>\n                    <p>\u0627\u0644\u0642\u0648\u0629 \u0627\u0644\u0645\u0624\u062b\u0631\u0629 \u0639\u0645\u0648\u062f\u064a\u064b\u0627 \u0639\u0644\u0649 \u0645\u062d\u0648\u0631 \u0627\u0644\u0639\u0645\u0648\u062f<\/p>\n                    <p class=\"unit-info\">\u0627\u0644\u0648\u062d\u062f\u0629: \u0646\u064a\u0648\u062a\u0646<\/p>\n                <\/div>\n                <div class=\"parameter-explanation\">\n                    <h3>\u0642\u0637\u0631 \u0627\u0644\u0639\u0645\u0648\u062f (\u062f)<\/h3>\n                    <p>\u0642\u0637\u0631 \u0627\u0644\u0639\u0645\u0648\u062f<\/p>\n                    <p class=\"unit-info\">\u0627\u0644\u0648\u062d\u062f\u0629: \u0645\u0645 (\u0645\u0644\u064a\u0645\u062a\u0631)<\/p>\n                <\/div>\n                <div class=\"parameter-explanation\">\n                    <h3>\u0627\u0644\u0645\u0633\u0627\u0641\u0629 (\u0623)<\/h3>\n                    <p>\u0627\u0644\u0645\u0633\u0627\u0641\u0629 \u0645\u0646 \u0623\u062d\u062f \u0627\u0644\u0637\u0631\u0641\u064a\u0646 \u0625\u0644\u0649 \u0627\u0644\u0646\u0642\u0637\u0629 \u0627\u0644\u0623\u0648\u0644\u0649<\/p>\n                    <p class=\"unit-info\">\u0627\u0644\u0648\u062d\u062f\u0629: \u0645\u0645 (\u0645\u0644\u064a\u0645\u062a\u0631)<\/p>\n                <\/div>\n                <div class=\"parameter-explanation\">\n                    <h3>\u0627\u0644\u0645\u0633\u0627\u0641\u0629 (\u0628)<\/h3>\n                    <p>\u0627\u0644\u0645\u0633\u0627\u0641\u0629 \u0645\u0646 \u0623\u062d\u062f \u0627\u0644\u0637\u0631\u0641\u064a\u0646 \u0625\u0644\u0649 \u0627\u0644\u0646\u0642\u0637\u0629 \u0627\u0644\u062b\u0627\u0646\u064a\u0629<\/p>\n                    <p class=\"unit-info\">\u0627\u0644\u0648\u062d\u062f\u0629: \u0645\u0645 (\u0645\u0644\u064a\u0645\u062a\u0631)<\/p>\n                <\/div>\n                <div class=\"parameter-explanation\">\n                    <h3>\u0627\u0644\u0637\u0648\u0644 \u0627\u0644\u0625\u062c\u0645\u0627\u0644\u064a (\u0644\u062a\u0631)<\/h3>\n                    <p>\u0627\u0644\u0637\u0648\u0644 \u0627\u0644\u0625\u062c\u0645\u0627\u0644\u064a \u0644\u0644\u0639\u0645\u0648\u062f<\/p>\n                    <p class=\"unit-info\">\u0627\u0644\u0648\u062d\u062f\u0629: \u0645\u0645 (\u0645\u0644\u064a\u0645\u062a\u0631)<\/p>\n                <\/div>\n                <div class=\"parameter-explanation\">\n                    <h3>\u0645\u0627\u062f\u0629<\/h3>\n                    <p>\u0645\u0627\u062f\u0629 \u0627\u0644\u0639\u0645\u0648\u062f<\/p>\n                    <p class=\"unit-info\">\u064a\u0624\u062b\u0631 \u0639\u0644\u0649 \u0645\u0639\u0627\u0645\u0644 \u0627\u0644\u0645\u0631\u0648\u0646\u0629 (E)<\/p>\n                <\/div>\n            <\/div>\n        <\/div>\n\n        <!-- Calculator Section -->\n        <div class=\"section\">\n            <h2>\u0627\u0644\u0622\u0644\u0629 \u0627\u0644\u062d\u0627\u0633\u0628\u0629<\/h2>\n            <div class=\"calculator-inputs\">\n                <div class=\"input-group\">\n                    <label for=\"ft\">\u0642\u062f\u0645 (\u0634\u0645\u0627\u0644)<\/label>\n                    <input type=\"number\" id=\"ft\" step=\"0.1\" placeholder=\"\u0623\u062f\u062e\u0644 \u0627\u0644\u0642\u0648\u0629 \u0627\u0644\u0645\u062d\u0648\u0631\u064a\u0629\">\n                <\/div>\n                <div class=\"input-group\">\n                    <label for=\"fr\">\u0641\u0631\u0646\u0633\u064a (\u0646)<\/label>\n                    <input type=\"number\" id=\"fr\" step=\"0.1\" placeholder=\"\u0623\u062f\u062e\u0644 \u0627\u0644\u0642\u0648\u0629 \u0627\u0644\u0634\u0639\u0627\u0639\u064a\u0629\">\n                <\/div>\n                <div class=\"input-group\">\n                    <label for=\"diameter\">\u062f (\u0645\u0645)<\/label>\n                    <input type=\"number\" id=\"diameter\" step=\"0.1\" placeholder=\"\u0623\u062f\u062e\u0644 \u0627\u0644\u0642\u0637\u0631\">\n                <\/div>\n                <div class=\"input-group\">\n                    <label for=\"a\">\u0623 (\u0645\u0645)<\/label>\n                    <input type=\"number\" id=\"a\" step=\"0.1\" placeholder=\"\u0623\u062f\u062e\u0644 \u0627\u0644\u0645\u0633\u0627\u0641\u0629 \u0623\">\n                <\/div>\n                <div class=\"input-group\">\n                    <label for=\"b\">\u0628 (\u0645\u0645)<\/label>\n                    <input type=\"number\" id=\"b\" step=\"0.1\" placeholder=\"\u0623\u062f\u062e\u0644 \u0627\u0644\u0645\u0633\u0627\u0641\u0629 \u0628\">\n                <\/div>\n                <div class=\"input-group\">\n                    <label for=\"length\">\u0644 (\u0645\u0645)<\/label>\n                    <input type=\"number\" id=\"length\" step=\"0.1\" placeholder=\"\u0623\u062f\u062e\u0644 \u0627\u0644\u0637\u0648\u0644 \u0627\u0644\u0625\u062c\u0645\u0627\u0644\u064a\">\n                <\/div>\n                <div class=\"input-group\">\n                    <label for=\"material\">\u0645\u0627\u062f\u0629<\/label>\n                    <select id=\"material\">\n                        <option value=\"steel\">\u0627\u0644\u0641\u0648\u0644\u0627\u0630 (E = 210 \u062c\u064a\u062c\u0627 \u0628\u0627\u0633\u0643\u0627\u0644)<\/option>\n                        <option value=\"aluminum\">\u0627\u0644\u0623\u0644\u0648\u0645\u0646\u064a\u0648\u0645 (E = 70 \u062c\u064a\u062c\u0627 \u0628\u0627\u0633\u0643\u0627\u0644)<\/option>\n                        <option value=\"brass\">\u0627\u0644\u0646\u062d\u0627\u0633 (E = 100 \u062c\u064a\u062c\u0627 \u0628\u0627\u0633\u0643\u0627\u0644)<\/option>\n                    <\/select>\n                <\/div>\n            <\/div>\n            <div class=\"button-container\">\n                <button class=\"calculate-btn\" onclick=\"calculateResults()\">\u0627\u062d\u0633\u0628<\/button>\n            <\/div>\n        <\/div>\n\n        <!-- Results Section -->\n        <div class=\"section results\" id=\"results\">\n            <h2>\u0627\u0644\u0646\u062a\u0627\u0626\u062c<\/h2>\n            <div class=\"result-item\">\n                <div class=\"result-label\">\u0639\u0632\u0645 \u0627\u0644\u0642\u0635\u0648\u0631 \u0627\u0644\u0630\u0627\u062a\u064a (I):<\/div>\n                <div class=\"result-value-container\">\n                    <span class=\"result-value\" id=\"momentOfInertia\">0<\/span>\n                    <span class=\"unit\">\u0645\u0645\u2074<\/span>\n                <\/div>\n            <\/div>\n            <div class=\"result-item\">\n                <div class=\"result-label\">\u0627\u0644\u0633\u0631\u0639\u0629 \u0627\u0644\u062d\u0631\u062c\u0629 (fc):<\/div>\n                <div class=\"result-value-container\">\n                    <span class=\"result-value\" id=\"criticalSpeed\">0<\/span>\n                    <span class=\"unit\">\u0647\u0631\u062a\u0632<\/span>\n                <\/div>\n            <\/div>\n            <div class=\"result-item\">\n                <div class=\"result-label\">\u0627\u0644\u062a\u0631\u062f\u062f \u0627\u0644\u0637\u0628\u064a\u0639\u064a (fg):<\/div>\n                <div class=\"result-value-container\">\n                    <span class=\"result-value\" id=\"naturalFreq\">0<\/span>\n                    <span class=\"unit\">\u0647\u0631\u062a\u0632<\/span>\n                <\/div>\n            <\/div>\n            <div class=\"result-item\">\n                <div class=\"result-label\">\u0645\u0631\u0628\u0639 \u0627\u0644\u0633\u0631\u0639\u0629 \u0627\u0644\u062d\u0631\u062c\u0629 (fc\u00b2):<\/div>\n                <div class=\"result-value-container\">\n                    <span class=\"result-value\" id=\"criticalSpeedSquared\">0<\/span>\n                    <span class=\"unit\">\u0647\u0631\u062a\u0632\u00b2<\/span>\n                <\/div>\n            <\/div>\n            <div class=\"result-item\">\n                <div class=\"result-label\">\u0645\u0631\u0628\u0639 \u0627\u0644\u062a\u0631\u062f\u062f \u0627\u0644\u0637\u0628\u064a\u0639\u064a (fg\u00b2):<\/div>\n                <div class=\"result-value-container\">\n                    <span class=\"result-value\" id=\"naturalFreqSquared\">0<\/span>\n                    <span class=\"unit\">\u0647\u0631\u062a\u0632\u00b2<\/span>\n                <\/div>\n            <\/div>\n            <div class=\"result-item\">\n                <div class=\"result-label\">\u0646\u0633\u0628\u0629 \u0627\u0644\u062a\u0631\u062f\u062f (f):<\/div>\n                <div class=\"result-value-container\">\n                    <span class=\"result-value\" id=\"freqRatio\">0<\/span>\n                <\/div>\n            <\/div>\n            <div class=\"result-item\">\n                <div class=\"result-label\">\u0627\u0644\u0645\u0639\u0627\u0645\u0644:<\/div>\n                <div class=\"result-value-container\">\n                    <span class=\"result-value\" id=\"coefficient\">0<\/span>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n\n    <script>\n        function calculateResults() {\n            \/\/ Get input values\n            const ft = parseFloat(document.getElementById('ft').value) || 0;\n            const fr = parseFloat(document.getElementById('fr').value) || 0;\n            const diameter = parseFloat(document.getElementById('diameter').value) || 0;\n            const a = parseFloat(document.getElementById('a').value) || 0;\n            const b = parseFloat(document.getElementById('b').value) || 0;\n            const length = parseFloat(document.getElementById('length').value) || 0;\n            const material = document.getElementById('material').value;\n\n            \/\/ Material properties (MPa)\n            const E = material === 'steel' ? 210000 : (material === 'aluminum' ? 70000 : 100000);\n\n            \/\/ Calculate moment of inertia (mm\u2074)\n            const I = (Math.PI * Math.pow(diameter, 4)) \/ 64;\n\n            \/\/ Calculate cross-sectional area (mm\u00b2)\n            const A = (Math.PI * Math.pow(diameter, 2)) \/ 4;\n\n            \/\/ Calculate critical speed (Hz)\n            const criticalSpeed = Math.sqrt((E * I) \/ (A * length * length * length)) \/ (2 * Math.PI);\n\n            \/\/ Calculate natural frequency (Hz)\n            const naturalFreq = criticalSpeed * Math.sqrt(1 - (fr \/ (E * A)));\n\n            \/\/ Calculate squares\n            const criticalSpeedSquared = Math.pow(criticalSpeed, 2);\n            const naturalFreqSquared = Math.pow(naturalFreq, 2);\n\n            \/\/ Calculate frequency ratio\n            const freqRatio = naturalFreq \/ criticalSpeed;\n\n            \/\/ Calculate coefficient (assuming it's based on the ratio)\n            const coefficient = 1 \/ (1 - Math.pow(freqRatio, 2));\n\n            \/\/ Display results\n            document.getElementById('momentOfInertia').textContent = I.toFixed(2);\n            document.getElementById('criticalSpeed').textContent = criticalSpeed.toFixed(2);\n            document.getElementById('naturalFreq').textContent = naturalFreq.toFixed(2);\n            document.getElementById('criticalSpeedSquared').textContent = criticalSpeedSquared.toFixed(2);\n            document.getElementById('naturalFreqSquared').textContent = naturalFreqSquared.toFixed(2);\n            document.getElementById('freqRatio').textContent = freqRatio.toFixed(4);\n            document.getElementById('coefficient').textContent = coefficient.toFixed(4);\n\n            document.getElementById('results').style.display = 'block';\n        }\n    <\/script>\n<\/body>\n<\/html>","protected":false},"excerpt":{"rendered":"<p>Discover precision engineering with our Shaft Stiffness and Force Calculator. Designed for mechanical professionals, this tool helps you determine shaft rigidity and required force for&#8230;<\/p>","protected":false},"author":2,"featured_media":15498,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"pmpro_default_level":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[3424],"tags":[3546,3545,3544],"class_list":["post-15495","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-keyway-pin-shaft-calculator","tag-engineering-design-tool","tag-mechanical-force-calculation","tag-shaft-rigidity-analysis","pmpro-has-access"],"acf":[],"jetpack_featured_media_url":"https:\/\/www.mechstream.com\/wp-content\/uploads\/2025\/04\/Shaft-Stiffness-and-Force-Calculator.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.mechstream.com\/ar\/wp-json\/wp\/v2\/posts\/15495","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mechstream.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mechstream.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/ar\/wp-json\/wp\/v2\/comments?post=15495"}],"version-history":[{"count":0,"href":"https:\/\/www.mechstream.com\/ar\/wp-json\/wp\/v2\/posts\/15495\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/ar\/wp-json\/wp\/v2\/media\/15498"}],"wp:attachment":[{"href":"https:\/\/www.mechstream.com\/ar\/wp-json\/wp\/v2\/media?parent=15495"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mechstream.com\/ar\/wp-json\/wp\/v2\/categories?post=15495"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mechstream.com\/ar\/wp-json\/wp\/v2\/tags?post=15495"}],"curies":[{"name":"\u0648\u0648\u0631\u062f\u0628\u0631\u064a\u0633","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}