基于弯扭组合的江海直达船舶波激振动模型试验研究

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振动与冲击 ›› 2018, Vol. 37 ›› Issue (12) : 193-200.

论文

王一雯，吴卫国，刘正国，林熙，郭国虎

作者信息 +

Experimental investigation on torsion and vertical springing of a rivertosea ship

WANG Yiwen, WU Weiguo, LIU Zhengguo, LIN Xi, GUO Guohu

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文章历史 +

摘要

对于江海直达船此类大开口宽扁船的极限强度与疲劳分析中，垂向与扭转方向波激振动影响不容忽视。由于此类船舶既在长江河道航行又在沿海海况内航行，海况变化范围较大，船体梁的自振频率与遭遇频率及其倍频极易重合从而导致共振。而目前该领域国内外开展的波激振动垂向弯矩方面的研究较多，大开口船舶扭转振动却并未有太多的进展，处于斜浪下的大开口船弯扭组合波激振动试验研究极为缺乏。本文在考虑流体特性与结构动力特性相似情况下开展了一系列分段梁模型的波浪载荷试验研究。通过一类U型测量梁对垂向与扭转刚度进行模拟满足固有频率特性相似，分析了不同航速对高低频成分的影响。探究江海直达船压载装载条件下的高低频垂向波浪载荷响应以及扭转波激振动响应特性，对理论计算以及规范修正提供参考依据。

Abstract

The effect of vertical and torsional springing phenomena of open ships like a riverseagoing ship have been one of significant issues in the research of ultimate strength and fatigue analysis since this type of ship sails in both Yangtze River and offshore which confronts various wave conditions. Under such situation, the natural frequency can be equal or multiple of the encounter frequency which can excite the resonant vibration easily. However up to now, the analysis normally focuses on vertical bending vibration around the world while torsional vibrations with openings have not been paid enough attention. The available springing experiments considering coupled vertical and torsional moment in oblique waves are rare. A series of segmented model tests are conducted in regular wave under the simulation of both fluid and dynamic structural characteristics. The U sectional backbone was designed to accommodate the vertical stiffness as well as torsional stiffness. The wave component and high order component of moment results were extracted and analyzed in various velocities. And the symmetrical and antisymmetrical modes of vibration of riverseagoing ship were investigated.

导出引用

王一雯，吴卫国，刘正国，林熙，郭国虎. 基于弯扭组合的江海直达船舶波激振动模型试验研究[J]. 振动与冲击, 2018, 37(12): 193-200

WANG Yiwen, WU Weiguo, LIU Zhengguo, LIN Xi, GUO Guohu . Experimental investigation on torsion and vertical springing of a rivertosea ship[J]. Journal of Vibration and Shock, 2018, 37(12): 193-200

参考文献

[1] 唐宇航，陈志坚，张佳栋.基于数值实验的波浪载荷激励船舶振动响应研究[J].振动与冲击.2016,35(22):114-122.
    Vibration analysis of ships under waver loads based on numerical experiment[J].Journal of Vibration and Shock,2016,35(22):114-122.
[2] S. Zhu, M. Wu, T. Moan. Experimental investigation of Hull girder vibrations of a flexible backbone model in bending and torsion[J] Appl Ocean Res, 33 (2011), pp. 252–274.
[3] S.Y. Hong, B.W. Kim. Experimental investigations of higher-order springing and whipping – WILS project[J].Int. J. Nav. Arch. Ocean Eng., 6 (2014), pp. 1160–1181.
[4] Hong, S.Y., Kim, B.W. and Nam, B.W., 2011. Experimental study on torsion springing and whipping of large container ship. Proceeding of 21st International Offshore and Polar Engineering Conference, Maui, USA, 19-24 June 2011,pp.97-107.
[5] 陈占阳，任慧龙，李辉，等．超大型船舶变截面梁分段模型的载荷试验研究［J］．哈尔滨工程大学学报，2012，33( 30) : 263－268．
    The wave load experimental investigation of a segmented model of a very large ship based on variable cross-section beams［J］．Journal of Harbin Engineering University,2012, 33( 30) : 263 － 268．
[6] 顾学康，胡嘉骏，沈进威.舰船波浪弯矩响应的频率特性[J].中国造船，2000,41(1):31-38.
     The frequency characteristics of ship vertical wave bending moments, 2000,41(1):31-38.
[7] 汪雪良，赵南，丁军，胡嘉骏. VLCC在波浪中弹性响应的理论与模型试验研究[J]. 船舶力学，2016，20(1-2)：127-136.
    Study of hydroelastic ship responses of a VLCC by theoretical and experimental methods.Journal of Ship Mechanics, 2016,20(1-2)：127-136.
[8] 汪雪良，徐春，顾学康等.超大型矿砂船波激振动模型试验研究[A].2009年船舶结构力学学术会议论文集，2009:174-187.
    Experimental investigations of springping responses of an ultra-large ore carrier,2009:174-187.
[9] Wang,X.,Gu,X.,Temarel,P.,Hu,J.. Investigation of springing in ship structures using experimental methods and 3D hydroelastic theory[J]. Journal of Marine Science and Technology, 2016, 21: 271.
[10] Fonseca N, Guedes Soares C. Experimental investigation of the nonlinear effects on the statistics of vertical motions and loads of a containership in irregular waves[J]. Journal of Ship Research, 2004, 148: 148-167.
[11] A. Marón, G. Kapsenberg. Design of a ship model for hydro-elastic experiments in waves[J].Int. J. Nav. Archit. Ocean Eng, 6 (2014), pp. 1130–1147.
[12] K.Iijima,O.A.Hermundstad,S.Zhu,T.Moan, Symmetric and antisymmetric vibrations of a hydroelastically scaled model[J].Hydroelasticity in Marine Technology 2009,173-182.
[13] Kim,B.W.,Kim,K.H.,Kim,Y.S.,Hong,S.Y., Torsion moment conversion methods in model test with U-shape backbone.Proceeding of the 24th International Ocean and Polar Engineering Conference,Busan,Korea,2014,782-791.
[14] 戴仰山，沈进威，宋竞正.船舶波浪载荷[M].国防工业出版社,2007,1.
[15] Drummen,I.,Wu,M. Moan,T.,Experimental and Numerical Study of Containership Responses in severe Head Seas[J].Marine Structures,2008,1-22.
[16] Rajendran, S, Fonseca, N. and Guedes Soares C., 2014.Analysis of vertical bending moment on an ultra large container ship induced by extreme head seas. Proceedings of the 33nd International Conference on Offshore Mechanics and Arctic Engineering. OMAE 2014-24602.