摘要
局部砰击载荷是在船舶首部结构设计时重点关注的问题。文章基于显式有限元方法,选用任意拉格朗日—欧拉算法(ALE),针对某30°二维楔形刚体入水砰击问题,开展了数值预报工作。针对模型网格密度开展了收敛性分析。数值预报的加速度、砰击压力等时域结果与已公开发表的模型实验的结果进行了比较,吻合非常好。鉴于在微机上数值计算时间比较长的问题,文中探讨了并行计算技术在模拟中的应用。
Design against slamming loads is the concern of ship designers from the view point of strengths. An explicit finite element code is applied to study the impact of one rigid wedge subject to water entry us- ing the Arbitrary Lagrangian-Eulerian （ALE） algorithm. The numerical results are compared and validated with experimental slamming acceleration and pressures in time domain, obtaining very good agreement. A convergence study for mesh density is carried out. Parallel computing technology is applied to improve the computing efficiency, which is one important issue arising in simulation when personal computers are used before.
出处
《船舶力学》
EI
北大核心
2012年第8期907-914,共8页
Journal of Ship Mechanics
基金
国家自然科学基金资助项目(51109159)
关键词
显式有限元
二维楔形体
砰击载荷
并行计算
explicit finite element method
rigid wedge
slamming
parallel computing
