Research And Application On FEA-Template Based On ANSYS For Ship Hull Structure

Finite element method is a popular numerical analysis method, which is widely applied in many industrial fields such as aviation, architecture, mechanics, electronics and chemistry. With the development of compute technology in soft and hard, the FEM has made great advances. Some finite element analysis(FEA) soft such as ANSYS MSC/NASTRAN ABAQUS ADINA ALGOR have been inputted into the practical projects. These FEA soft have become the most important part of CAD and CAE.During the design and strength calculating of ship structure, the process "preliminary design-modeling-analysis-revision-re-design-re-modeling-re-analysis" will be carried out repeatedly, and there are some defects in the apply of FEA soft, such as the preprocessor and the postprocessor of these FEA soft are operated complex, the requirement to users is too much, and the user be apt to make mistake during the processing. If each scheme is analyzed completely according to the requirement of FEA, much time are wasted on the duplicated operation, and the ratio of error rises.To solve the problems mentioned above, the author studies the problems carefully and gives some solutions.A template for ship structure strength calculating and analysis based on ANSYS is built. The system possesses the following features: 1) a method of parametric finite element analysis for ship structure is presented in this system, the FEA model is droved by the parameters. 2) Through proceeding communication mechanism of Windows, the centre of control based on passages is formed. It can use the ANSYS as a subprogram.The thesis consists of seven chapters: in chapter one, the author introduces background and significance of this study. Chapter two is introduction about the platforms and tools dependent on by the system. In chapter three, the parametric technology and its application in the FEM has been elaborated explicitly. In chapterfour, the program block of parametric FEA on LPG ship hull hold is built. In chapter five, the template of strength calculating based on the Visual C++ is built. In chapter six, the author introduces the usage of the FEA template through a 2000M3 LPG ship. Chapter seven summarizes the research work, point out the main achievement of this thesis and the further work.