三维加筋板楔形体结构水弹性砰击的ALE数值模拟研究  

Hydroelastic simulation of one 3D free-drop wedge with stiffened panels using ALE method

作　　者：骆寒冰[1] 张智[1] 王辉[2] 

机构地区：[1]天津大学船舶与海洋工程系,天津300072 [2]中国船舶科学研究中心,江苏无锡214082

出　　处：《船舶力学》2013年第1期84-91,共8页Journal of Ship Mechanics

基　　金：国家自然科学基金资助项目(51109159)

摘　　要：合理预报船首局部结构砰击载荷及其结构应力响应是船舶结构设计人员所重点关心的问题。文章针对某钢制三维加筋板楔形体入水砰击问题,考虑其水弹性效应,采用ALE显式有限元方法开展了数值预报工作。数值模拟的入水加速度、加筋板结构的纵骨和横梁上应力响应等结果与模型实验的时域结果进行了比较,吻合较好。文中还讨论了数值模拟的并行计算效率问题。Design against slamming loads of the bow structures is the concern of ship designers and re- searchers from the view point of strength. An explicit finite element code using the Arbitrary Lagrangian- Eulerian （ALE） algorithm is applied to study the hydroelastic impact of one 3D free drop wedge with stiff- ened panels. The motion, stress responses on longitudinal stiffeners and transverse webs are obtained. The numerical results are compared and validated with experimental ones in time domain, obtaining very good a- greement. The efficiencv of the narallel computing is discussed.

关 键 词：ALE方法 加筋板结构 水弹性砰击 并行计算 

分 类 号：TV131.2[水利工程—水力学及河流动力学]