| 船舶艉轴部尖声诊断 |
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| 引用本文： | 张殿昌,张俊红,等.船舶艉轴部尖声诊断[J].天津大学学报(自然科学与工程技术版),2001,34(2):277-280. |
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| 作者姓名： | 张殿昌 张俊红 |
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| 作者单位： | [1]天津内燃机研究所，天津300072 [2]天津大学机械工程学院 |
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| 摘 要： | 分析了某大型散装货轮艉轴部异常尖叫声。采用噪声和振动信号的频谱分析和相关分析，指出这种现象出现的原因在于船体刚度欠佳，致使中垂过大，轴系不对中，导致艉轴前密封盖艉轴卡环发生撞击式摩擦，最后用分子机械摩擦理论揭示了摩擦尖叫声产生的特点及其原因。
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| 关 键 词： | 机械尖叫声 艉轴 中垂 船舶 机械摩擦 噪声诊断 频谱分析 相关分析 涡轮增压柴油机 |
| 文章编号： | 0493-2137（2001）02-0277-04 |
| 修稿时间： | 1999年5月5日 |
DIAGNOSIS OF SQUEAL NOISE
FROM SHIP PROPELLER-SHAFT |
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| ZHANG Dian-chang ,LAN Jun ,ZHANG Jun-hong ,CHEN Kuan CHEN Jin-xiang ,HUANG Jin-min.DIAGNOSIS OF SQUEAL NOISE
FROM SHIP PROPELLER-SHAFT[J].Journal of Tianjin University(Science and Technology),2001,34(2):277-280. |
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| Authors: | ZHANG Dian-chang LAN Jun ZHANG Jun-hong CHEN Kuan CHEN Jin-xiang HUANG Jin-min |
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| Institution: | ZHANG Dian-chang 1,LAN Jun 1,ZHANG Jun-hong 2,CHEN Kuan 2 CHEN Jin-xiang 2,HUANG Jin-min 3 |
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| Abstract: | The squeal noise from propeller-shaft of a large bulk freight ship is analyzed in this paper by using spectrum analysis and coherence analysis of noise and vibration signals.It indicates that this squeal is due to the lack of stiffness of the structure of the ship,leading to extensive sagging and shaft system decentration,making the forward seal and the propeller-shaft clamp ring collide,and then making squeal noise.Finally,the reasons and characteristics of the squeal noise are explained by using the molecular-mechanical attrition theory. |
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| Keywords: | squeal noise propeller-shaft friction sagging |
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