作　　者： (周红杰）; (李春）; (丁勤卫）; (郝文星）;

机构地区： 上海理工大学能源与动力工程学院,上海200093

出　　处： 《水资源与水工程学报》 2017年第3期173-178,185,共7页

摘　　要： 为研究单桩基础海上风力机遭遇船舶撞击的动力响应特性,建立基于国内某单桩柱式的3MW风力机与船舶碰撞模型,运用显式动力学理论并结合非线性有限元方法,通过LS-DYNA模拟5000t船舶以不同速度撞击风力机过的动力响应过程。结果表明:碰撞持续的时间和最大接触力随着速度的增加而增加;碰撞结束后,船舶回弹动能与初始动能之比随着速度的增加而减少,但结构变形能与初始动能之比随着速度的增加而增加;当船舶速度为2 m/s时,碰撞主要为塑性碰撞,撞深为0.675 m,塔顶风力机最大位移和加速度分别为2.3 m和29 m/s^2。 In order to analyze the dynamic response characteristics of monopile wind turbine collision with ship, a 3MW wind turbine and ship collision model based on monopile was established.Based on explicit dynamical theory and nonlinear finite element method, simulation of the dynamic response of the wind turbine by 5000-t by the LS-DYNA at different impact speed was conducted.The results showed that： the duration of the collision and the maximum contact force increases with speed;after the collision, the ratio of the ship rebound kinetic energy to the initial kinetic energy decreases with the increase of speed , but the ratio of the structure deformation energy to the initial kinetic energy increases as the speed increases;When the ship speed is 2 m/s, the collision is mainly plastic collision, the collision depth is 0.675m, and the top tower wind turbine maximum displacement and acceleration are 2.3m and 29 m/s^2.

关 键 词： 单桩基础 船舶碰撞 动力响应 海上风力机