| 波流联合作用下深水铰接塔平台的组合共振 |
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| 引用本文： | 谢文会,唐友刚,陈予恕.波流联合作用下深水铰接塔平台的组合共振[J].海洋技术,2005,24(4):89-93. |
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| 作者姓名： | 谢文会 唐友刚 陈予恕 |
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| 作者单位： | 1. 天津大学建筑工程学院船舶与海洋工程系,天津,300072
2. 天津大学机械工程学院力学系,天津,300072 |
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| 摘 要： | 研究了深水铰接塔平台在波流联合作用下的组合共振特性。将平台顶部工作单元简化为集中质量，塔柱和浮力仓简化为均匀直杆，建立了铰接塔平台运动分析模型。考虑海流和波浪对平台的作用，应用Morison公式计算铰接塔平台瞬时位置所受水动力，依据拉格朗日原理建立了铰接塔平台的强非线性运动方程。分别考虑波浪作用和波流联合作用，采用数值计算方法，计算了高400m、塔柱直径15m的浮力塔平台的多种组合共振响应。研究表明，波浪作用下平台将出现2vm＋vn组合共振，波流联合作用下平台将出现vm＋vn组合共振、2vm＋vn组合共振。
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| 关 键 词： | 铰接塔平台 波流联合 非线性运动 组合共振 |
| 文章编号： | 1003-2029（2005）04-0089-05 |
| 收稿时间： | 2005-03-12 |
| 修稿时间： | 2005年3月12日 |
Combination-harmonic Resonance of Articulated Tower Platform in the Deep Water |
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| XIE Wen-hui,TANG You-gang,CHEN Yu-shu.Combination-harmonic Resonance of Articulated Tower Platform in the Deep Water[J].Ocean Technology,2005,24(4):89-93. |
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| Authors: | XIE Wen-hui TANG You-gang CHEN Yu-shu |
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| Institution: | 1. Dept. of Naval Architecture and Ocean Engineering, School of Civil Engineering, Tianjin University, Tianjin 300072 ; 2. Dept. of Mechanics, School of Mechanical Engineering, Tianjin University, Tianjin 300072 |
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| Abstract: | The paper studied the nonlinear dynamics behaviors of articulated tower platform(ATP) in the deep water.The units on the top of ATP are simplified into one concentrated mass,and tower and buoyancy cabinet are simplified into uniform bar,the analysis mode of ATP is put forward.Considering current and wave loads,and hydro-dynamics acted on the ATP at the instantaneous position is calculated by Morison formula,the highly nonlinear motion equation is established by Lagrange principle.Considering wave loads and combined wave-current loads respectively,several kinds of combination-harmonic resonance of ATP which the diameter of tower is 15m and the height of tower is 400m were investigated by numerical method.The results shows that 2 v_m+v_n combination-harmonic response will occur under wave loads,v_m+v_n and 2 v_m+v_n combination-harmonic response will occur under combined wave-current loads. |
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| Keywords: | ATP combined wave-current nonlinear motion combination -harmonic resonance |
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