船型结构物的总纵强度直接简化计算技术研究

从简化载荷施加和力学三维有限元模型的建立上进行了船型结构物的总纵强度直接简化计算技术的研究。直接简化计算技术绕开现代流行却复杂较难实现的设计波方法,借助规范波浪载荷的分布,结合现代数值计算技术,利用数值积分实现波浪载荷的模拟,同时寻求船体静水载荷分布数值化和解决三维粗网格模型的快速模拟,最终实现船型结构物设计载荷的数值模拟和总纵强度的三维设计。文章旨在寻求适合于前期设计阶段的船体结构总纵强度三维设计技术,并有效解决质量分布模拟而引起的一些客观问题,同时突破传统的二维剖面设计中非连续结构参与总纵强度的主观性判断,从工程应用角度快速有效地完成船体结构刚度和强度设计。

Simpliifed direct calculation methods for longitudinal strength of ship type structure

This paper described the simplified loads application and three-dimensional (3D) FEM model in the simpliifed direct calculation methods for the ship’s longitudinal strength. The simpliifed direct calculation methods steer clear of the modern but complex design wave methods. It simulated the wave loads by the numerical integration through the standard wave load distribution combined with the modern numerical calculation techniques, resulting in the numerical static load distribution and the fast 3D modelling with coarse grid. Finally, it carried out the numerical simulation of the design loads and the 3D design of the longitudinal strength. The aim of the current study is to seek the 3D design techniques for the longitudinal strength of the ship type structure at an initial design stage, and to effectively solve the objective questions due to the crude weight distributions, in order to break the subjectivity in the conventional two-dimensional (2D) sectional design techniques. It can quickly and effectively accomplish the rigidity and strength design of ship structures from an viewpoint of industrial application.