船桥碰撞下船体结构强度及动力响应分析  

Strength and dynamic response analysis of ship structure under bridge collision

作　　者：付明春[1] FU Ming-chun(Dalian Ocean University,Dalian 116300,China)

机构地区：[1]大连海洋大学,辽宁大连116300

出　　处：《舰船科学技术》2022年第19期18-21,137,共5页Ship Science and Technology

基　　金：辽宁省教育科学“十三五”规划立项课题(JG17EB035)。

摘　　要：船桥碰撞下船体结构很容易损伤,为控制灾难性程度,船舶设计时进行船体结构强度及动力响应测试十分必要,建立船舶和桥梁的有限元模型。针对模型施加荷载,设计6种工况,动态模拟船桥碰撞过程。分析碰撞过程中的船体结构强度及动力响应情况。结果表明:根据最大相对变形和极限强度,将船体强度从低到高排序,得出船舶行驶速度越快、撞击越正面,角度越大,产生的破坏力越强。碰撞力变化特征:开始迅速上升,出现小幅度的减小,碰撞力再次上升并且达到顶峰,碰撞力迅速下降,船舶的动能逐渐减少,内能逐渐升高;行驶速度越快、撞击越正面,角度越大,动能越小,内能越大。撞深整体呈现先升高再降低最后维持平稳的变化特征;船舶行驶速度越快、撞击越正面,角度越大,撞深越大。Under the collision of ship bridge,the hull structure is easily damaged,which seriously threatens the safety of life and property.it is necessary to test the strength and dynamic response of the hull structure during ship design.Establish the finite element model of ship and bridge.According to the model implementation load and ship collision description equation,six working conditions are designed to dynamically simulate the ship bridge collision process.The strength and dynamic response of hull structure during collision are analyzed.The results show that according to the maximum relative deformation and ultimate strength,the strength of the hull is sorted.It is concluded that the faster the speed of the ship is,the more frontal the impact is,and the greater the angle is,the stronger the damage is.Change characteristics of collision force:the collision force rises rapidly and decreases slightly.The collision force rises again and reaches the peak.The collision force drops rapidly.The kinetic energy of the ship gradually decreases and the internal energy gradually increases.The faster the driving speed,the more frontal the impact,the greater the angle,the smaller the kinetic energy,and the greater the internal energy.The impact depth as a whole shows the characteristics of first increasing,then decreasing,and finally maintaining a stable change.The faster the ship travels,the more frontal the collision is,the greater the angle is,and the deeper the collision is.

关 键 词：船桥碰撞 有限元模型 船体结构强度 动力响应 

分 类 号：TP125.63[自动化与计算机技术—控制理论与控制工程]