半潜式钻井平台甲板结构极限强度分析..doc

江苏科技大学 本科生毕业设计(论文) 学 院 船舶与海洋工程 专 业 船舶与海洋工程 学生姓名 王杰 班级学号 1040101128 指导老师 施兴华 二零一四年六月 江苏科技大学本科生毕业论文 半潜式钻井平台甲板结构极限强度分析 Ultimate strength analysis of semi-submersible drilling platform deck structure 江苏科技大学本科生毕业设计（论文） PAGE II 摘 要 人们对陆地和近海资源过度开发，导致陆地和近海资源快要枯竭，所以海洋石油的开发必须要从近海向深水地区发展。随着海洋石油资源开采事业日益发展，半潜式钻井平台在海洋油气开采工作中板眼了越来越重要的角色。其安全问题也引起了重视，为了确保平台的结构安全，十分有必要对钻井平台进行极限强度分析。 本文的主要研究内容是：对国内外对平台极限强度分析的现状进行了了解，学习了有限元分析的理论知识，阐述了非线性问题的来源以及解决非线性问题的方法，以平台甲板结构为例进行了研究。本文对ANSYS软件的发展过程以及功能进行了简要的介绍。本文学习、总结了以前在极限强度方面的理论成果，以半潜式平台甲板结构为研究对象，应用大型有限元软件ANSYS对结构进行建模，对其施加载荷，进行有限元分析，计算出极限强度。 关键词：半潜式平台；甲板；极限强度；ANSYS Abstract People overexploited land and offshore resources, which leading to the depletion of onshore and offshore resources soon, so we have to search for resources from offshore to deep water offshore areas. With the exploitation of offshore petroleum resources career growing, semi-submersible drilling platform plays an increasingly important role in the offshore oil and gas exploration work. Its security issue also attracted our attention. For the purpose of ensuring the structural safety of the platform, analyzing the ultimate strength of the drilling platform is becoming more and more necessary. In this article, we can know something about the current situation of the ultimate strength analysis at home and abroad and learn the theoretical knowledge of finite element analysis. The article also describes the nonlinear problem of sources and methods to solve nonlinear problems. We take the platform deck as an example for the study. This particle also introduces the development process and function of the ANSYS software. This article studied and summarized the previous theoretical results in aspects of the ultimate strength. We took the platform deck structure as an example for study. We made a structural model with finit