摘要
宽扁肥大船型由于其较“柔”的结构特性极易引起高频持续的波激振动响应,同时显著提高了应力幅值水平及循环次数,极大影响了船体结构安全性与可靠性。采用非线性水弹性时域计算方法以及模型试验方法对某艘宽扁肥大船型的波激振动响应特性进行分析;验证了该理论预报方法的有效性及可靠性,并讨论了其高阶波激振动响应对总载荷水平的贡献程度,表明在某些遭遇频率下其波激振动响应较大。在宽扁肥大船结构设计及审核阶段,必须考虑其波激振动成分的影响。
The wide flat type of ships is susceptible to induce high frequency sustained springing vibration due to its flexible structure.Such kind of hydroelastic vibration is essential to be considered in design stage for the structural safety.The springing effect of the wave induced load on the vibration of a wide flat ship was analysed theoretically and experimentally.A nonlinear hydroelastic simulation was carried out and then validated by results comparison.The high orders of harmonics were extracted and their springing effect characteristics were illustrated.It has to be taken into consideration of the influence of the springing especially in design stage.
作者
王一雯
吴卫国
郑成
WANG Yiwen;WU Weiguo;ZHENG Cheng(Green&Smart River-Sea-Going Ship,Cruise and Yacht Research Center,Wuhan University of Technology,Wuhan 430063,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2020年第18期174-180,共7页
Journal of Vibration and Shock
基金
高技术船舶科研项目(20151g0006)。
关键词
宽扁肥大船型
波激振动
非线性水弹性数值计算方法
wide flat ship type
springing effect
nonlinear hydroelastical numerical simulation
