文章摘要
浮式柔性网阻拦系统对冲击小艇的拦截性能分析
Analysis of small boat intercepting performance of the floating flexible net blocking system
投稿时间:2022-05-20  修订日期:2022-07-13
DOI:
中文关键词: 阻拦网系统  高速冲击  拦截性能  结构响应
英文关键词: Floating flexible net blocking system  high-speed collision  interception performance  structural response
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
作者单位
张鹏 大连理工大学船舶工程学院 
李楷 大连理工大学船舶工程学院 
高翔 大连理工大学船舶工程学院 
王运龙 大连理工大学船舶工程学院 
苑志江 海军大连舰艇学院航海系 
蒋晓刚 海军大连舰艇学院航海系 
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中文摘要:
      浮式柔性网阻拦系统作为一种物理防护设施,对舰船、港口设施和岛礁建设的安全保障发挥着至关重要的作用。阻拦网系统对来袭小艇的拦截过程是一种较为复杂的非线性瞬态响应过程,在冲击小艇高速冲击时,构件局部会出现撕裂、变形等破坏和失效的形式。因此有必要对阻拦网系统的拦截性能和结构完整性进行研究。本文基于ALE算法和对称罚函数接触算法,使用LS-DYNA软件对阻拦网系统防护单元拦截冲击小艇的动态过程进行数值模拟。计算得到了阻拦网在冲击过程中结构变形破坏、能量转化、网体受力以及撞深等特征。同时考虑了冲击小艇不同碰撞角度和碰撞高度对防护单元拦截效果的影响,分析总结出相应的变化规律并给出相关结论。本文的研究工作可为浮式柔性网阻拦系统优化设计和安装部署提供一定参考依据。
英文摘要:
      As a physical protection facility, floating flexible net blocking system plays a vital role in the security guarantee of ships, port facilities, and island construction. The interception process of the net blocking system is a complicated nonlinear transient response process. When the small boat collides with the blocking unit at high speed, parts of the structure components will appear tearing, deformation and other forms of damage and failure. Therefore, it is necessary to study the interception performance and structure integrity of the net blocking system structure. In this paper, based on ALE algorithm and symmetric penalty function contact algorithm, the dynamic process of the interception of small boat with high speed by net blocking system is simulated by LS-DYNA software. The characteristics of structure deformation and failure, energy transformation, rope force and impact depth of the blocking unit in the collision process are calculated. Meanwhile the influence of different collision angles and collision heights of small boat on interception effect of the blocking unit is considered, and the corresponding trends are analyzed and summarized. The research work can provide reference for the optimization design and deployment of the floating flexible net blocking system.
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