船体极限强度非线性有限元计算方法  

Research on the Nonlinear Finite Element Method for Ultimate Strength of Ship Hulls

作　　者：伍友军[1] 万琪[1] 周博[1] 

机构地区：[1]中国船舶及海洋工程设计研究院,上海200011

出　　处：《船舶与海洋工程》2017年第6期20-25,48,共7页Naval Architecture and Ocean Engineering

摘　　要：船体极限强度是关系到船体生命力和安全的重要指标之一,各国规范都对其提出明确要求。以某双壳油船为研究对象,采用非线性有限元法计算其极限承载能力。通过采用不同的网格尺寸、边界条件、加载方式及施加或不施加侧向载荷,对同一对象进行有限元计算。对计算结果进行对比分析,提出合适的网格尺寸、边界条件设置方式和加载方式,同时得出施加侧向载荷及不施加侧向载荷的优缺点。该研究可为采用非线性有限元法计算船体结构极限强度提供参考。The ultimate strength of ship hulls is one of the important factors for ship vitality, the requirements on which are clearly specified in the rules and regulations of classification societies around the world. Taking a double hull oil tanker as the research object, the nonlinear finite element method is adopted to calculate its ultimate strength. Finite element calculations on the same object are performed with different gird sizes, boundary conditions, loading modes and with or without lateral loads. The calculation results are compared and analyzed to propose the proper grid size, boundary condition configuration and loading mode, and to obtain the advantages and disadvantages of whether or not to apply the lateral loads. This study can provide some reference for the hull structure ultimate strength calculations using nonlinear finite element method.

关 键 词：非线性有限元 极限强度 船体结构 

分 类 号：U661.43[交通运输工程—船舶及航道工程]