航速振荡对船舶纵摇与垂荡耦合运动的响应模型  

Modeling of response of ship velocity vibration to pitching and heaving oscillation

作　　者：朱军[1] 黄昆仑[1] 曹留帅[1] 

机构地区：[1]海军工程大学舰船工程系,武汉430033

出　　处：《海军工程大学学报》2012年第5期1-5,共5页Journal of Naval University of Engineering

基　　金：国家自然科学基金资助项目(51179199)

摘　　要：为解决船舶纵向速度振荡对纵摇与垂荡运动响应影响问题,开展了有船舶纵向速度振荡条件下的纵摇与垂荡耦合运动响应模型研究。建立了一组坐标系,基于弗汝德-克雷洛夫假定,推导了船体切片的浮力、阻尼力和惯性力,通过对切片的积分得到了船体纵摇和垂荡的水动力(矩),推导并得到了纵摇与垂荡耦合运动响应方程。初步讨论分析了纵向振荡速度、加速度和位移对船体水动力及波浪力(矩)的影响,得到了纵向振荡位移对纵摇与垂荡耦合运动特性有显著影响的初步结论。Considering the ship longitudinal velocity vtbratton, tins paper cunuuc j del of coupling motion responding to oscillatory pitching and heaving motions. Based on the Froude- Krylov hypothesis, a set of coordinate axes were established and the buoyancy, damping and inertia forees were deducted. The hydrodynamic forces （moments） of ship pitching and heaving were ob- tained from the integration of forces of the hull section and then the coupling motion response equa- tions were derived. A primary analysis of the effects of ship longitudinal vibrating velocity, accelera- tion and displacement on hydrodynamic forces and waves forces （moments） of ships led to a prelimi- nary conclusion that the shiprs longitudinal vibrating displacement has a significant effect on the mo- tion characteristics of oscillatory pitching and heaving motions.

关 键 词：船舶 波浪 纵摇与垂荡 频率 散射 

分 类 号：U661.3[交通运输工程—船舶及航道工程]