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力学与实践 ›› 2011, Vol. 33 ›› Issue (1): 17-20.doi: 10.6052/1000-0879-lxysj2010-333

• 应用研究 • 上一篇    下一篇

基于能量原理确定系泊碰撞载荷的有限元法

边文凤1,程清2,吴忠友3   

  1. 1. 哈尔滨工业大学(威海)
    2.
    3. 中复西港船艇有限公司,山东 威海 264209
  • 收稿日期:2010-08-13 修回日期:2010-11-15 出版日期:2011-02-15 发布日期:2011-03-03
  • 通讯作者: 边文凤 E-mail:BIANWF@SINA.COM

THE FINITE ELEMENT METHOD TO DETERMINE SHIP MOORING COLLISION LOAD BASED ON ENERGY PRINCIPLE

  • Received:2010-08-13 Revised:2010-11-15 Online:2011-02-15 Published:2011-03-03

摘要: 准确地确定出船舶系泊时的撞击载荷, 对船舶及海洋平台的强度研究都是极其重要的. 提出了通过能量原理和有限元分析确定系泊撞击载荷的方法. 碰撞时, 动能和变形能满足能量守恒, 动能是包括附连水质量在内的船体总动能, 此动能在撞击时转化为变形能, 根据变形能与载荷的关系, 求出碰撞载荷. 通过具有碰撞载荷理论解的梁的验证, 表明该方法是完全可行的. 为实际工程提供了确定护舷撞击力的理论依据和计算方法.

关键词:

船舶系泊;碰撞载荷;能量守恒;有限元

Abstract: It is extremely important to accurately determine the ship mooring collision load in considering ship and offshore platform's strength. This paper proposes a method to determine the ship mooring collision load with energy principle and the finite element method. In collision, the impact kinetic energy and the deformation energy are considered in the energy conservation law. The kinetic energy refers to the ship's kinetic energy including the additional water mass. It is transformed into the deformation energy when collision occurs. That collision load can be calculated by the relationship between the deformation energy and the load. The theoretical solution of abeam is used to validate the method. The method can be used to determine the impact force of the fender in practical cases.

Key words:

ship mooring