计及形变的滚塑船艇非线性横摇运动建模  

Modeling of Nonlinear Rolling Motion of Rotational Molding Boats under Elastic Deformation

作　　者：姚齐国[1] 刘玉良[1] 叶继英[1] 李莉莉[1] 徐乐[1] 

机构地区：[1]浙江海洋学院船舶与海洋工程学院,浙江舟山316000

出　　处：《哈尔滨理工大学学报》2015年第1期31-36,共6页Journal of Harbin University of Science and Technology

基　　金：浙江省自然科学基金(LY13E090004;LY12E09004);浙江省2014年度高校实验室工作研究项目(YB201424);浙江省实验室研究会重点项目(Z201218)

摘　　要：以渔家乐滚塑休闲船为研究对象,结合船艇的典型尺度、载荷、风浪、航行区域的典型海况、回复力矩和阻尼力矩的非线性特征,并考虑船艇体的弹性形变、随机风速和波浪等非线性因素,根据力矩平衡原理,建立了零航速下滚塑船艇横摇的单自由度非线性运动方程,为控制或抑制船舶的横摇奠定了基础.仿真发现,当计及船体形变时横摇频率加快,船艇发生颤抖,角速度和角加速度均增大,船艇稳性和舒适感变差,而且不规则的风和浪对船艇横摇影响更大.本文的分析和计算思路同样可以应用于其他船舶.Taking the fishing-entertainment rotational molding boat as the research object, combining its ele- ments such as the typical scale, loads, wind, wave, typical sea condition, nonlinear feature of restoring torque and damping torque, as well as considering its elastic deformation, random wind and waves, according to the theory of torque balance, the single freedom nonlinear rolling motion equation of boat is established. So it laid the foundation for controlling or restraining boat＇ s rolling. Through simulation, it is concluded that the rolling frequency will be accelerated, the boat will tremble, its angular velocity and angular acceleration will be added up too, and its stabil- ity and comfort will be cut down. Further more, the irregular wind and irregular waves will affect even more. The i- deas of analysis and calculation may be popularized and applied to other boats and ships.

关 键 词：滚塑船艇 弹性形变 横摇运动 建模 

分 类 号：U661[交通运输工程—船舶及航道工程]