开孔群式上层建筑一体化船型多重突变结构计算分析

Structural Analysis of Ship with Integral Superstructure Containing Hole Group and Abrupt

从开孔群式上层建筑一体化船型存在的阶梯型断层式上层建筑、密集大开孔群和左右舷外板不对称等多重突变结构出发,借助三维有限元分析技术,以船体梁横剖面惯性矩和船底外板剖面模数等船体梁剖面固有特性参数为设计切入点,探讨多重突变结构对船体梁总纵强度设计的影响和各甲板层构件对船体梁剖面惯性矩的贡献。此类船型大多负有在高航速、高海况条件下开展临危作业的使命,因此从工程实际的角度实现总体装载与船体结构设计的互动反哺式设计是首要任务。基于船体梁剖面惯性矩贡献的船舶设计方法可为此类船型的工程设计提供参考。

Starting from multiple abrupt structures of the integrated ship shape with open hole group,such as stepped fault superstructure,dense large open hole group and asymmetric shell plates.Three-dimensional finite element analysis technology is adopted.The inherent characteristic parameters of the ship beam section are taken as the initial design point,such as the cross-section moment of inertia of the ship beam and the section modulus of the bottom plates.The influence of multiple abrupt structures on the global longitudinal strength design of hull girder and the contribution of deck members to the section moment of inertia of hull girder are discussed.Most of this type of ships have dangerous mission sat high speed and high sea conditions,so it is the primary task to achieve the interactive back feeding design of overall loading and hull structure design from the perspective of engineering practice.The method based on the contribution of hull beam section moment of inertia proposed can provide a new reference for the engineering design of such type of ships.