【作者】 王勇；

【导师】 严仁军；

【作者基本信息】 武汉理工大学 ， 工程力学， 2003， 硕士

【摘要】 整船结构分析能够真实地模拟船舶所承受的载荷分布，减少边界条件对分析结果带来的人为影响，是一种精度更高的分析方法。进行整船结构有限元分析模型加载非常复杂。整船结构有限元分析的载荷自动加载技术应该包括：舷外水压力计算、船舶浮态调整和节点载荷自动分配。本文对整船结构有限元模型进行了分析，主要做了以下几个方面工作： 1)船舶结构重量、重心计算分析，运用静力学的方法对船舶重量包括船体钢料重量和船舶上的设备、油、水、人员和货物等重量进行分析，总结了船舶总的重量、重心计算方法。 2)用静力学计算方法，推导出把船体壳板上的波浪静水压力等效分配到相应的节点上的公式，总结出计算出船舶的浮力和浮心计算方法。 3)通过分析船舶常用浮态调整方法、船体结构有限元模型和船体线型特征，运用船舶静力学原理，推导船舶浮态纵倾调整公式，分析了基于船舶结构有限元模型的纵倾浮态调整方法和初步探讨了纵倾浮态调整中的参数确定方法以及初步确定这些参数的取值范围。 4)用本文推导的计算方法和公式开发FORTRAN程序，并编译连接到有限元软件ANSYS中，用于进行整船结构有限元分析时自动加载计算。 5)建立实际营运船舶有限元模型，计算船舶的重量和重心、浮力和浮心，用程序计算的船舶的总体重量和重心、浮力和浮心，分析了本文编制的程序计算误差。 本文研究的加载方法和编制的程序可以应用于整船结构有限元分析自动加载。更多还原

【Abstract】 Structure analysis of whole hull can simulate the real load ,reduce man-made influence of result caused by boundary conditions. It is a more accurate analysis. With the development of ship industry, the FEA applied in ship structure is more complex. The techniques of auto-loading includes: water pressure on hull, balancing on model, and automatic distributing load on nodes. In this paper, an analysis is made in this field. The following is the main works of the paper.1) The weight and the center of weight of the whole hull, analysis by statics the weight of steel, the equipment, oil, water, crew and cargoes etc., conclude a method of calculating the weight and the center of weight of the whole hull,2) Work out the series of formula of distributing the water pressure of wave to the corresponding nodes on the plate, conclude a method of calculating the flotage and the center of the flotage,3) Analysis the method of adjusting the equilibrium of the hull, the finite element module of the hull, and the character of the linetype, by ship statics principle, work out a series of formula of adjusting longitudinal slant, preliminarily confirm the parameter and the range,4) Program in FORTRAN, and link into ANSYS, for auto-loading when analyzing the whole hull by the FEA,5) Make the finite element module of a real hull, calculate the weight and the center of the weight, the flotage and the center of the flotage, compare the result of manual calculation with the computed result, analysis the deviation of the program.The formula, the way and the program of auto-loading can be used for FEA the whole hull. This may serves a basis for further study.更多还原