脉冲载荷作用下冰层的动力学研究  

Dynamic response of viscoelastic floating ice plate(VFIP) under unit-impulse loading

作　　者：胡明勇[1] 张志宏[1] 刘巨斌[1] 姚俊[2] 张辽远[2] 

机构地区：[1]海军工程大学理学院,武汉430033 [2]沈阳理工大学,沈阳110168

出　　处：《海军工程大学学报》2011年第6期5-7,19,共4页Journal of Naval University of Engineering

基　　金：国家科技部基础研究项目(2008DFR704607)

摘　　要：利用Hankel变换和Laplace变换求解了浮冰在脉冲荷载作用下的动力学方程,得到了其近似解析解。计算了仿冰材料浮板在脉冲载荷作用下的动力学响应,分析了仿冰材料浮板的物理参数以及水深对位移响应的影响,揭示了许多粘弹性浮冰的动力学现象。研究结果表明:所采用的方法是可靠的,容易应用于工程实际。This paper addresses the problem of the dynamic response of floating ice under unit-impulse loading.The Hankel transformation and the Laplace transformation were used to offer a solution to the dynamic equation of VFIP under unit-impulse loading thus to obtain the results of transient response of VFIP by the action of unit-impulse loading.The transient response of a polymer plate under unit-impulse loading was also calculated.Through analyzing the influences of physical parameters of floating ice plate and the reservoir depth on the displacement response,the dynamic properties of VFIP were revealed.The results prove that the proposed method is effective and easy to apply in engineering practice.

关 键 词：脉冲荷载 浮冰 响应 HANKEL变换 粘弹 

分 类 号：O35[理学—流体力学]