| 集中质量法计算深海系泊冲击张力 |
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| 引用本文： | 唐友刚,张若瑜,程楠,赵晶瑞. 集中质量法计算深海系泊冲击张力[J]. 天津大学学报(自然科学与工程技术版), 2009, 42(8): 695-701 |
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| 作者姓名： | 唐友刚 张若瑜 程楠 赵晶瑞 |
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| 作者单位： | 天津大学建筑工程学院港口与海洋工程教育部重点实验室,天津,300072 |
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| 基金项目： | 国家"863"高技术研究发展计划资助项目，国家自然科学基金资助项目，国家自然科学基金重点资助(50639030).项目 |
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| 摘 要： | 采用三维集中质量法建立深海系缆模型，计算系缆的构型及张力．根据各点的初始奈件和系缆两端点处的位移边界条件，求解系缆的三维运动方程；分析系缆在不同激励频率和激励幅值下的运动响应，并预测系缆松弛-张紧运动的发生条件和系缆冲击载荷的大小研究表明，系缆张力随系缆的上端点的运动而变化当系缆上端点的激励频率和幅值达到一定值时，系缆会出现交替松弛-张紧的现象，产生冲击载荷。
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| 关 键 词： | 深海系泊 系缆张力 冲击载荷 动力响应 冲击放大系数 |
Analysis of Snap Tension of Deep Water Mooring with Lumped Mass Method |
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| TANG You-gang,ZHANG Ruo-yu,CHENG Nan,ZHAO Jing-rui. Analysis of Snap Tension of Deep Water Mooring with Lumped Mass Method[J]. Journal of Tianjin University(Science and Technology), 2009, 42(8): 695-701 |
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| Authors: | TANG You-gang ZHANG Ruo-yu CHENG Nan ZHAO Jing-rui |
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| Affiliation: | (Key Laboratory of Harbor and Ocean Engineering of Ministry of Education, School of Civil Engineering,Tianjin University,Tianjin 300072 ,China) |
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| Abstract: | The three dimensional lumped mass model was used to analyze cable configuration and tension. The equations of the three dimensional motion of a marine cable are solved considering the initial condition of all nodes and the boundary conditions of both ends of the cable. The dynamic response of the cable was analyzed in different excitation amplitude and frequency. The occurrence condition of the taught-slag state was predicted and the snap tension of the cable was calculated. The research shows that the cable tension changes with the motion of the upper point of the cable. When the excitation becomes severe ,the cable starts to operate in alternating taut-slack conditions and causes the snap tension. |
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| Keywords: | mooring in deep water cable tension snap tension dynamic response impact amplification factor |
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