船舶-桥墩碰撞与防护计算

简述船 桥碰撞有限元动态模拟计算原理和实际应用的关键问题,通过5万吨船首碰撞桥墩的计算示例,说明结构模型化的过程、碰撞中力和能量的时间历程和结构的损伤情况,分析防撞装置的作用。

基于LS-DYNA的船舶-桥墩碰撞数值模拟

文章基于Ansys/Ls-dyna软件,建立船舶、桥墩三维有限元计算模型,并对船舶-桥墩碰撞进行有限元仿真计算,分析船舶-桥墩碰撞的基本过程、碰撞过程中碰撞力的大小、船艏及桥墩的损伤变形等,为避免船舶碰撞桥墩事故发生寻找安全措施。

Study on dangerous collision area of ships out of control in Sutong Bridge area

Motion state of ship out of control in bridge area was analyzed.Motion procedure after losing control was divided into two steps.One is drift step within stopping period.The other is drift step without inertia,which is induced by wind and current.Mathematical model for motion of ship out of control,considering wind-induced drift,current-induced drift,stopping ability,etc.,was established.Dangerous collision areas for main pier and auxiliary piers were analyzed according to different calculation conditions.