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.
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
关键词
非线性有限元
极限强度
船体结构
nonlinear finite element
ultimate strength
hull structure
