{"id":15972,"date":"2026-09-04T08:51:36","date_gmt":"2026-09-04T08:51:36","guid":{"rendered":"https:\/\/www.hndfcrane.com\/?post_type=posts&#038;p=15972"},"modified":"2026-09-04T08:51:39","modified_gmt":"2026-09-04T08:51:39","slug":"overhead-crane-reducer-noise-gear-eccentricity-analysis-and-solutions","status":"publish","type":"posts","link":"https:\/\/www.hndfcrane.com\/ja\/posts\/overhead-crane-reducer-noise-gear-eccentricity-analysis-and-solutions\/","title":{"rendered":"\u5929\u4e95\u30af\u30ec\u30fc\u30f3\u6e1b\u901f\u6a5f\u306e\u9a12\u97f3\uff1a\u30ae\u30a2\u504f\u5fc3\u89e3\u6790\u3068\u89e3\u6c7a\u7b56"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><p>\u76ee\u6b21<\/p><nav><ul><li><a href=\"#1-gear-excitation-analysis-under-eccentricity-error\">1.\u504f\u5fc3\u8aa4\u5dee\u4e0b\u306b\u304a\u3051\u308b\u6b6f\u8eca\u52b1\u632f\u89e3\u6790<\/a><ul><li><a href=\"#1-1-gear-pair-model\">1.1 \u30ae\u30a2\u30da\u30a2\u30e2\u30c7\u30eb<\/a><\/li><\/ul><\/li><li><a href=\"#2-numerical-calculation-of-gear-excitation-in-overhead-crane-reducer-noise\">2 \u5929\u4e95\u30af\u30ec\u30fc\u30f3\u6e1b\u901f\u6a5f\u306e\u9a12\u97f3\u306b\u304a\u3051\u308b\u30ae\u30a2\u52b1\u632f\u306e\u6570\u5024\u8a08\u7b97<\/a><ul><li><a href=\"#2-1-vibration-differential-equation\">2.1 \u632f\u52d5\u5fae\u5206\u65b9\u7a0b\u5f0f<\/a><\/li><li><a href=\"#2-2-vibration-analysis-results\">2.2 \u632f\u52d5\u89e3\u6790\u7d50\u679c<\/a><\/li><\/ul><\/li><li><a href=\"#3-radiated-noise-prediction-for-bogie-axle-bridge\">3. \u30dc\u30ae\u30fc\u8eca\u8ef8\u6a4b\u6881\u306e\u653e\u5c04\u9a12\u97f3\u4e88\u6e2c<\/a><ul><li><a href=\"#3-1-acoustic-model\">3.1 \u97f3\u97ff\u30e2\u30c7\u30eb<\/a><\/li><li><a href=\"#3-2-measures-to-reduce-abnormal-noise\">3.2 \u7570\u5e38\u9a12\u97f3\u3092\u4f4e\u6e1b\u3059\u308b\u305f\u3081\u306e\u5bfe\u7b56<\/a><\/li><\/ul><\/li><li><a href=\"#4-conclusion\">4. \u7d50\u8ad6<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p>\u4f5c\u696d\u5834\u3067\u306e\u540a\u308a\u4e0a\u3052\u3084\u8cc7\u6750\u904b\u642c\u4e2d\u306b\u3001\u5929\u4e95\u30af\u30ec\u30fc\u30f3\u306e\u6e1b\u901f\u6a5f\u304b\u3089\u7570\u97f3\u304c\u767a\u751f\u3057\u3001\u30af\u30ec\u30fc\u30f3\u306e\u6b63\u5e38\u306a\u52d5\u4f5c\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u672c\u7a3f\u3067\u306f\u3001\u30ae\u30a2\u30da\u30a2\u306e\u504f\u5fc3\u8aa4\u5dee\u306e\u89b3\u70b9\u304b\u3089\u7570\u5e38\u9a12\u97f3\u3092\u5206\u6790\u3057\u307e\u3059\u3002\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u89e3\u6790\u306b\u3088\u308b\u69cb\u9020\u9a12\u97f3\u8a08\u7b97\u7d50\u679c\u306b\u57fa\u3065\u304d\u3001\u6539\u5584\u306e\u305f\u3081\u306e\u5bfe\u5fdc\u7b56\u3082\u63d0\u793a\u3057\u307e\u3059\u3002 <a href=\"https:\/\/www.hndfcrane.com\/ja\/overhead-cranes\/\">\u5929\u4e95\u30af\u30ec\u30fc\u30f3<\/a> \u904b\u7528\u5b9f\u7e3e\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1536\" height=\"1024\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Overhead-Crane-Reducer-Noise.png\" alt=\"\" class=\"wp-image-15994\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"1-gear-excitation-analysis-under-eccentricity-error\">1.\u504f\u5fc3\u8aa4\u5dee\u4e0b\u306b\u304a\u3051\u308b\u6b6f\u8eca\u52b1\u632f\u89e3\u6790<\/h2>\n\n\n\n<p>\u672c\u7a3f\u3067\u89e3\u6790\u5bfe\u8c61\u3068\u3059\u308b\u5929\u4e95\u30af\u30ec\u30fc\u30f3\u306f\u300113kW\u306e\u4e09\u76f8\u975e\u540c\u671f\u30e2\u30fc\u30bf\u3092\u642d\u8f09\u3057\u305fLD10 t-28.5m\u578b\u3067\u3042\u308b\u3002\u6e1b\u901f\u6a5f\u306b\u306f4\u6bb5\u5e73\u884c\u8ef8\u30d8\u30ea\u30ab\u30eb\u30ae\u30a2\u4f1d\u52d5\u88c5\u7f6e\u304c\u7528\u3044\u3089\u308c\u3066\u3044\u308b\u3002\u504f\u5fc3\u8aa4\u5dee\u3092\u8003\u616e\u3059\u308b\u5834\u5408\u3001\u89e3\u6790\u306f\u307e\u305a\u5358\u4e00\u306e\u30ae\u30a2\u30da\u30a2\u3068\u305d\u306e\u565b\u307f\u5408\u3044\u7dda\u9577\u304b\u3089\u958b\u59cb\u3059\u308b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-1-gear-pair-model\">1.1 \u30ae\u30a2\u30da\u30a2\u30e2\u30c7\u30eb<\/h3>\n\n\n\n<p>\u6b6f\u8eca\u306e\u504f\u5fc3\u3092\u8003\u616e\u3059\u308b\u5834\u5408\u3001\u99c6\u52d5\u6b6f\u8eca\u3068\u5f93\u52d5\u6b6f\u8eca\u306e\u504f\u5fc3\u3092\u8d77\u70b9\u3068\u3059\u308b\u3002\u65e2\u77e5\u306e\u6b6f\u6570\u3068\u99c6\u52d5\u6b6f\u8eca\u306e\u56de\u8ee2\u901f\u5ea6\u306b\u57fa\u3065\u3044\u3066\u3001\u5f93\u52d5\u6b6f\u8eca\u306e\u56de\u8ee2\u901f\u5ea6\u306e\u6642\u9593\u5468\u6ce2\u6570\u7279\u6027\u66f2\u7dda\u3092\u53d6\u5f97\u3057\u3001\u504f\u5fc3\u304c\u306a\u3044\u5834\u5408\u306e\u7d50\u679c\u3068\u6bd4\u8f03\u3059\u308b\u3002\u504f\u5fc3\u6b6f\u8eca\u5bfe\u306e\u30e2\u30c7\u30eb\u3092\u56f31\u306b\u793a\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1385\" height=\"1136\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Eccentric-gear-pair-model.png\" alt=\"\" class=\"wp-image-15991\"\/><figcaption class=\"wp-element-caption\">\u56f31 \u504f\u5fc3\u6b6f\u8eca\u5bfe\u30e2\u30c7\u30eb<\/figcaption><\/figure>\n\n\n\n<p><code>O1<\/code> \u305d\u3057\u3066 <code>\u9178\u7d20<\/code> \u306f\u3001\u504f\u5fc3\u304c\u306a\u3044\u3068\u3044\u3046\u4eee\u5b9a\u306e\u4e0b\u3067\u306e\u6b6f\u8eca\u5bfe\u306e\u5e7e\u4f55\u5b66\u7684\u4e2d\u5fc3\u3067\u3059\u3002\u504f\u5fc3\u5f8c <code>E1<\/code> \u305d\u3057\u3066 <code>E2<\/code> \u767a\u751f\u3059\u308b\u3068\u3001\u30ae\u30a2\u306e\u5e7e\u4f55\u5b66\u7684\u4e2d\u5fc3\u306f <code>O11<\/code> \u305d\u3057\u3066 <code>O22<\/code>\u504f\u5fc3\u5024\u306b\u95a2\u4fc2\u306a\u304f\u3001\u63a5\u70b9\u3092\u7d50\u3093\u3067\u5f62\u6210\u3055\u308c\u308b\u30e1\u30c3\u30b7\u30e5\u7dda\u306f <code>T1(xT1, yT1)<\/code> \u305d\u3057\u3066 <code>T2(xT2, yT2)<\/code> \u5e38\u306b\u52d5\u7684\u306a\u4ea4\u70b9\u3092\u6301\u3064 <code>M(xM, yM)<\/code> \u6b6f\u8eca\u306e\u5e7e\u4f55\u5b66\u7684\u4e2d\u5fc3\u3092\u7d50\u3076\u7dda\u3067\u3002<\/p>\n\n\n\n<p>\u30aa\u30d5\u30bb\u30c3\u30c8\u3092\u8003\u616e\u3059\u308b\u3068\u3001\u6b6f\u8eca\u5bfe\u306e\u304b\u307f\u5408\u3044\u7dda\u306f\u6642\u9593\u3068\u3068\u3082\u306b\u5909\u5316\u3059\u308b\u7279\u6027\u3092\u6301\u3064\u3002\u305d\u306e\u65b9\u7a0b\u5f0f\u306f\u6b21\u306e\u3088\u3046\u306b\u8868\u3055\u308c\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1005\" height=\"192\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Gear-Pair-Meshing-Line-Equation-watermarked.png\" alt=\"\" class=\"wp-image-16002\"\/><\/figure>\n\n\n\n<p>\u5ea7\u6a19\u539f\u70b9\u304c\u70b9\u306b\u7f6e\u304b\u308c\u3066\u3044\u308b\u5834\u5408 <code>O11<\/code>\u70b9\u306e\u52d5\u7684\u6a2a\u5ea7\u6a19 <code>M<\/code> \u6b21\u306e\u3088\u3046\u306b\u8868\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"977\" height=\"198\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Dynamic-Intersection-Point-Coordinate-Equation-watermarked.png\" alt=\"\" class=\"wp-image-16003\"\/><\/figure>\n\n\n\n<p>\u3053\u306e\u30ae\u30a2\u30da\u30a2\u306e\u77ac\u9593\u7684\u306a\u4f1d\u9054\u6bd4\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"924\" height=\"204\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Instantaneous-Gear-Transmission-Ratio-Equation-watermarked.png\" alt=\"\" class=\"wp-image-16004\"\/><\/figure>\n\n\n\n<p>\u5b9f\u969b\u306e\u8a08\u7b97\u3067\u306f\u3001\u52d5\u7684\u306a\u4ea4\u70b9 <code>M<\/code> \u6b6f\u8eca\u306e\u304b\u307f\u5408\u3044\u7dda\u3001\u904b\u52d5\u65b9\u5411\u3068\u6b6f\u8eca\u306e\u77ac\u9593\u7684\u306a\u304b\u307f\u5408\u3044\u7dda\u901f\u5ea6\u3068\u306e\u9593\u306e\u89d2\u5ea6\u306b\u306f\u4e00\u5b9a\u306e\u95a2\u4fc2\u304c\u3042\u308a\u307e\u3059\u3002\u504f\u5fc3\u7bc4\u56f2\u3068\u5165\u529b\u89d2\u901f\u5ea6\u304c\u6c7a\u5b9a\u3055\u308c\u305f\u5f8c\u3001\u5f0f\uff081\uff09\uff5e\uff083\uff09\u3092\u4f7f\u7528\u3057\u3066\u5f93\u52d5\u6b6f\u8eca\u306e\u89d2\u901f\u5ea6\u3092\u53d6\u5f97\u3057\u3001\u504f\u5fc3\u8aa4\u5dee\u4e0b\u3067\u306e\u6b6f\u8eca\u5bfe\u306e\u52d5\u7684\u52b1\u8d77\u3092\u3055\u3089\u306b\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5b9f\u969b\u306e\u88fd\u9020\u3067\u306f\u3001 <code>E1<\/code> \u305d\u3057\u3066 <code>E2<\/code> \u307b\u307c\u540c\u3058\u3068\u307f\u306a\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u65e2\u77e5\u306e\u7cbe\u5ea6\u7b49\u7d1a\u306e\u4e0b\u3067\u3001\u30d8\u30ea\u30ab\u30eb\u30ae\u30a2\u30da\u30a2\u306e\u504f\u5fc3\u91cf\u304c20\u03bcm\u306e\u5834\u5408\u3001\u99c6\u52d5\u30ae\u30a2\u306e\u8a08\u7b97\u3055\u308c\u305f\u6642\u9593\u5468\u6ce2\u6570\u7279\u6027\u66f2\u7dda\u3092\u56f32\u306b\u793a\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1033\" height=\"1523\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Time-frequency-curve-of-driven-gear-angular-velocity.png\" alt=\"\" class=\"wp-image-15989\"\/><figcaption class=\"wp-element-caption\">\u56f32 \u99c6\u52d5\u6b6f\u8eca\u306e\u89d2\u901f\u5ea6\u306e\u6642\u9593\u5468\u6ce2\u6570\u66f2\u7dda\uff1a\uff08a\uff09\u6642\u9593\u9818\u57df\u306b\u304a\u3051\u308b\u89d2\u901f\u5ea6\u3001\uff08b\uff09\u5468\u6ce2\u6570\u9818\u57df\u306b\u304a\u3051\u308b\u89d2\u901f\u5ea6<\/figcaption><\/figure>\n\n\n\n<p>\u504f\u5fc3\u8aa4\u5dee\u304c\u306a\u3044\u3068\u4eee\u5b9a\u3057\u305f\u5834\u5408\u3001\u5f93\u52d5\u6b6f\u8eca\u306e\u89d2\u901f\u5ea6\u306f\u56f32a\u306e\u30d4\u30f3\u30af\u8272\u306e\u76f4\u7dda\u3067\u8868\u3055\u308c\u307e\u3059\u3002\u504f\u5fc3\u8aa4\u5dee\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u3001\u5f93\u52d5\u6b6f\u8eca\u306e\u89d2\u901f\u5ea6\u306f40.5\uff5e41.5 rad\/s\u306e\u7bc4\u56f2\u306b\u96c6\u4e2d\u3057\u3001\u660e\u78ba\u304b\u3064\u898f\u5247\u7684\u306a\u5909\u52d5\u3092\u793a\u3057\u307e\u3059\u3002\u30d5\u30fc\u30ea\u30a8\u5909\u63db\u5f8c\u306e\u5468\u6ce2\u6570\u9818\u57df\u306e\u7d50\u679c\u306f\u3001\u5165\u529b\u8ef8\u306e\u56de\u8ee2\u5468\u6ce2\u6570\u304c25 Hz\u3001\u5f93\u52d5\u6b6f\u8eca\u306e\u51fa\u529b\u56de\u8ee2\u5468\u6ce2\u6570\u304c6.5 Hz\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u5165\u529b\u6bb5\u6b6f\u8eca\u5bfe\u306e\u504f\u5fc3\u5909\u52d5\u304c\u6b6f\u8eca\u30b7\u30b9\u30c6\u30e0\u3092\u4ecb\u3057\u3066\u4f1d\u9054\u3055\u308c\u7d9a\u3051\u3001\u30ae\u30a2\u30dc\u30c3\u30af\u30b9\u306e\u5916\u90e8\u306b\u653e\u5c04\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2-numerical-calculation-of-gear-excitation-in-overhead-crane-reducer-noise\">2 \u5929\u4e95\u30af\u30ec\u30fc\u30f3\u6e1b\u901f\u6a5f\u306e\u9a12\u97f3\u306b\u304a\u3051\u308b\u30ae\u30a2\u52b1\u632f\u306e\u6570\u5024\u8a08\u7b97<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-1-vibration-differential-equation\">2.1 \u632f\u52d5\u5fae\u5206\u65b9\u7a0b\u5f0f<\/h3>\n\n\n\n<p>\u5929\u4e95\u30af\u30ec\u30fc\u30f3\u6e1b\u901f\u6a5f\u306e\u30ae\u30a2\u30b7\u30b9\u30c6\u30e0\u306e\u632f\u52d5\u5fae\u5206\u65b9\u7a0b\u5f0f\u306f\u3001\u305d\u306e\u52d5\u7684\u7279\u6027\u3092\u7814\u7a76\u3059\u308b\u4e0a\u3067\u91cd\u8981\u306a\u57fa\u790e\u3068\u306a\u308b\u3002\u6b21\u6570\u3092\u4f4e\u6e1b\u3057\u3001\u30ae\u30a2\u306e\u52d5\u7684\u565b\u307f\u5408\u3044\u529b\u3092\u8a08\u7b97\u3059\u308b\u3053\u3068\u3067\u3001\u632f\u52d5\u5f37\u5ea6\u3084\u69cb\u9020\u9a12\u97f3\u306a\u3069\u306e\u632f\u52d5\u7279\u6027\u3092\u6570\u5024\u7684\u306b\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u5fc5\u8981\u306a2\u968e\u5fae\u5206\u65b9\u7a0b\u5f0f\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"965\" height=\"135\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Gear-System-Vibration-Differential-Equation-watermarked.png\" alt=\"\" class=\"wp-image-16005\"\/><\/figure>\n\n\n\n<p>\u52d5\u7684\u5ea7\u6a19\u306e\u6642\u9593\u65b9\u7a0b\u5f0f <code>M<\/code> \u306b\u7f6e\u304d\u63db\u3048\u3089\u308c\u308b <code>\u03b8<\/code>\u305d\u3057\u3066\u3001\u9ad8\u901f\u6b6f\u8eca\u5bfe\u306e\u52d5\u7684\u565b\u307f\u5408\u3044\u529b\u3092\u6c42\u3081\u308b\u305f\u3081\u306b\u3001\u30eb\u30f3\u30b2\u30fb\u30af\u30c3\u30bf\u6cd5\u306b\u3088\u308b\u6b21\u6570\u524a\u6e1b\u539f\u7406\u304c\u7528\u3044\u3089\u308c\u307e\u3059\u3002\u56f33\u306f\u3001\u5165\u529b\u6bb5\u3068\u6700\u7d42\u51fa\u529b\u6bb5\u306b\u304a\u3051\u308b\u565b\u307f\u5408\u3044\u529b\u306e\u8a08\u7b97\u7d50\u679c\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1022\" height=\"1538\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Frequency-domain-of-dynamic-meshing-force.png\" alt=\"\" class=\"wp-image-15978\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Frequency-domain-of-dynamic-meshing-force.png 1022w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Frequency-domain-of-dynamic-meshing-force-1021x1536.png 1021w\" sizes=\"(max-width: 1022px) 100vw, 1022px\" \/><figcaption class=\"wp-element-caption\">\u56f33 \u52d5\u7684\u565b\u307f\u5408\u3044\u529b\u306e\u5468\u6ce2\u6570\u9818\u57df\uff1a\uff08a\uff09\u5165\u529b\u6bb5\uff1b\uff08b\uff09\u51fa\u529b\u6bb5<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-2-vibration-analysis-results\">2.2 \u632f\u52d5\u89e3\u6790\u7d50\u679c<\/h3>\n\n\n\n<p>\u56f34\u306f\u6e1b\u901f\u6a5f\u306e\u69cb\u9020\u3092\u793a\u3057\u3066\u3044\u308b\u3002\u5165\u529b\u7aef\u3068\u51fa\u529b\u7aef\u306e\u8ef8\u53d7\u5ea7\u4f4d\u7f6e\u3092\u9078\u629e\u3057\u3066\u8a08\u7b97\u3092\u884c\u3044\u300120\u03bcm\u306e\u504f\u5fc3\u8aa4\u5dee\u306b\u304a\u3051\u308b\u5468\u6ce2\u6570\u9818\u57df\u306e\u632f\u52d5\u7279\u6027\u66f2\u7dda\u3092\u5f97\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"600\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Structure-of-an-overhead-crane-reducer.jpg\" alt=\"\" class=\"wp-image-15976\"\/><figcaption class=\"wp-element-caption\">\u56f34 \u5929\u4e95\u30af\u30ec\u30fc\u30f3\u6e1b\u901f\u6a5f\u306e\u69cb\u9020<\/figcaption><\/figure>\n\n\n\n<p>\u56f35\u306b\u793a\u3059\u3088\u3046\u306b\u3001\u504f\u5fc3\u8aa4\u5dee\u3092\u8003\u616e\u3059\u308b\u3068\u3001\u5165\u529b\u8ef8\u306e\u56de\u8ee2\u5468\u6ce2\u657025Hz\u306f\u3001\u7279\u306b\u5909\u4f4d\u66f2\u7dda\u306b\u304a\u3044\u3066\u3001\u4ed6\u306e\u30ae\u30a2\u30da\u30a2\u306b\u69d8\u3005\u306a\u6bb5\u968e\u3067\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u3002\u632f\u52d5\u7d50\u679c\u306b\u57fa\u3065\u304f\u9a12\u97f3\u8a08\u7b97\u306b\u3088\u308a\u3001\u504f\u5fc3\u8aa4\u5dee\u304c\u6e1b\u901f\u6a5f\u306e\u7570\u5e38\u9a12\u97f3\u306b\u53ca\u307c\u3059\u5f71\u97ff\u3092\u660e\u3089\u304b\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1006\" height=\"1564\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Vibration-response-analysis-results.png\" alt=\"\" class=\"wp-image-15979\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Vibration-response-analysis-results.png 1006w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Vibration-response-analysis-results-988x1536.png 988w\" sizes=\"(max-width: 1006px) 100vw, 1006px\" \/><figcaption class=\"wp-element-caption\">\u56f35 \u632f\u52d5\u5fdc\u7b54\u89e3\u6790\u7d50\u679c\uff1a\uff08a\uff09\u52a0\u901f\u5ea6\u3001\uff08b\uff09\u632f\u52d5\u5909\u4f4d<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"3-radiated-noise-prediction-for-bogie-axle-bridge\">3. \u30dc\u30ae\u30fc\u8eca\u8ef8\u6a4b\u6881\u306e\u653e\u5c04\u9a12\u97f3\u4e88\u6e2c<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-1-acoustic-model\">3.1 \u97f3\u97ff\u30e2\u30c7\u30eb<\/h3>\n\n\n\n<p>\u5f15\u7528\u6587\u732e\u306b\u3088\u308b\u3068\u3001\u97f3\u97ff\u5b66\u306f\u6d41\u4f53\u7814\u7a76\u306e\u5206\u91ce\u306b\u5c5e\u3059\u308b\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u97f3\u97ff\u6ce2\u52d5\u65b9\u7a0b\u5f0f\u306f\u6d41\u4f53\u9023\u7d9a\u65b9\u7a0b\u5f0f\u304b\u3089\u7814\u7a76\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u5a92\u8cea\u72b6\u614b\u306e\u89b3\u70b9\u304b\u3089\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u8868\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1224\" height=\"500\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Acoustic-Wave-Governing-Equations-watermarked.png\" alt=\"\" class=\"wp-image-16006\"\/><\/figure>\n\n\n\n<p>\u5f0f\u3067\u306f\u3001 <code>\u03c1<\/code>, <code>v<\/code>, <code>p<\/code>\u3001 \u305d\u3057\u3066 <code>s<\/code> \u7a7a\u6c17\u306e\u5bc6\u5ea6\u3001\u901f\u5ea6\u3001\u97f3\u5727\u3001\u30a8\u30f3\u30c8\u30ed\u30d4\u30fc\u306f\u3001 <code>\u3075<\/code> \u305d\u3057\u3066 <code>q<\/code> \u3053\u308c\u3089\u306f\u7a7a\u6c17\u5a92\u4f53\u306e\u5916\u90e8\u52b1\u8d77\u6e90\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<p>\u5929\u4e95\u30af\u30ec\u30fc\u30f3\u6e1b\u901f\u6a5f\u306e\u632f\u52d5\u5fdc\u7b54\u306b\u57fa\u3065\u304d\u3001\u52a0\u901f\u5ea6\u8a08\u7b97\u7d50\u679c\u3092\u30d5\u30fc\u30ea\u30a8\u5909\u63db\u30681\/3\u30aa\u30af\u30bf\u30fc\u30d6\u51e6\u7406\u306b\u3088\u3063\u3066\u51e6\u7406\u3059\u308b\u3002\u6e1b\u901f\u6a5f\u306e\u9ad8\u901f\u6bb5\u8ef8\u53d7\u5ea7\u306e\u69cb\u9020\u9a12\u97f3\u8a08\u7b97\u7d50\u679c\u3092\u56f36\u306b\u793a\u3059\u3002<\/p>\n\n\n\n<p>\u504f\u5fc3\u8aa4\u5dee\u3092\u8003\u616e\u3059\u308b\u3068\u3001\u6e1b\u901f\u6a5f\u306e\u69cb\u9020\u30ce\u30a4\u30ba\u306f0\uff5e100Hz\u306e\u4f4e\u5468\u6ce2\u6570\u5e2f\u57df\u3067\u3088\u308a\u9855\u8457\u306b\u5897\u52a0\u3057\u307e\u3059\u3002\u97f3\u97ff\u7406\u8ad6\u306b\u3088\u308c\u3070\u30016dB\u306e\u5dee\u306f\u30a8\u30cd\u30eb\u30ae\u30fc\u30ec\u30d9\u30eb\u306e1\u500d\u306e\u5dee\u306b\u76f8\u5f53\u3057\u307e\u3059\u3002\u56f36\u3067\u306f\u3001\u4e00\u90e8\u306e\u5468\u6ce2\u6570\u5e2f\u57df\u306b\u304a\u3051\u308b\u30ce\u30a4\u30ba\u306e\u5dee\u304c\u7d043\u500d\u306b\u9054\u3057\u3066\u304a\u308a\u3001\u504f\u5fc3\u8aa4\u5dee\u304c\u6e1b\u901f\u6a5f\u306e\u4f4e\u5468\u6ce2\u632f\u52d5\u306b\u5927\u304d\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u307e\u305f\u3001500Hz\u30681,000Hz\u306b\u3082\u660e\u78ba\u306a\u30d4\u30fc\u30af\u304c\u73fe\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u3053\u308c\u306f\u5165\u529b\u6bb5\u306e\u6b6f\u8eca\u306e\u304b\u307f\u5408\u3044\u5468\u6ce2\u6570\u306b\u3088\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1588\" height=\"990\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Structural-noise-of-the-reducer.png\" alt=\"\" class=\"wp-image-15980\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Structural-noise-of-the-reducer.png 1588w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Structural-noise-of-the-reducer-1536x958.png 1536w\" sizes=\"(max-width: 1588px) 100vw, 1588px\" \/><figcaption class=\"wp-element-caption\">\u56f36 \u6e1b\u901f\u6a5f\u306e\u69cb\u9020\u30ce\u30a4\u30ba<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-2-measures-to-reduce-abnormal-noise\">3.2 \u7570\u5e38\u9a12\u97f3\u3092\u4f4e\u6e1b\u3059\u308b\u305f\u3081\u306e\u5bfe\u7b56<\/h3>\n\n\n\n<p>\u8a08\u7b97\u306b\u4f7f\u7528\u3057\u305f20\u03bcm\u306e\u504f\u5fc3\u91cf\u306f\u3001\u6b6f\u8eca\u4f1d\u52d5\u7cbe\u5ea6\u7b49\u7d1a\u306b\u5fdc\u3058\u3066\u9078\u629e\u3055\u308c\u305f\u3082\u306e\u3067\u3059\u3002\u5b9f\u969b\u306e\u904b\u8ee2\u3067\u306f\u3001\u3088\u308a\u5927\u304d\u306a\u504f\u5fc3\u8aa4\u5dee\u304c\u751f\u3058\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u3001\u6e1b\u901f\u6a5f\u306e\u632f\u52d5\u3084\u9a12\u97f3\u4f4e\u6e1b\u306b\u5927\u304d\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u672c\u7a3f\u306e\u5206\u6790\u3068\u7d50\u8ad6\u306b\u57fa\u3065\u304d\u3001\u7570\u5e38\u9a12\u97f3\u306f\u4ee5\u4e0b\u306e\u70b9\u304b\u3089\u4f4e\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>1. 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