《压力容器的设计计算接强度校核方法》-毕业论文设计（学术).doc

大庆石油学院本科生毕业设计（论文） PAGE PAGE 22 摘 要 本文对锅炉的结构以及载荷作用条件进行了分析与研究，并依据JB4732《钢制压力容器—分析设计标准》对锅炉各部分壁厚进行了初步的设计。在此基础上运用相关的力学理论，本文将锅炉合理地分割成四个部分，并利用ANSYS软件建立了锅炉各部分的力学模型。考虑到锅炉的空间结构特点，本文采用solid45单元和plane82单元分别对锅炉的各部分进行了应力强度分析和疲劳分析。本文还对所指定的锅炉危险截面进行了线处理，然后对锅炉各部分进行了应力计算和应力分类。综上所述，本文所分析的内容以及所得出的结论是合理的。 关键词：锅炉；有限元；应力分析；疲劳分析 Abstract In this paper, the structure of the boiler and the load conditions are analyzed and studied, and then according to JB4732 Steel Pressure Vessels-analysis of design standards the thickness of all the parts of the boiler wall are preliminaryly designed. Based on the relevant mechanical theories the boiler is divided into four reasonable components in this paper and the mechanical model of all the parts of the boiler are found with the help of ANSYS software. Taking into account the spatial structure of the boiler, stress intensity and fatigue are analyzed for all the parts of the boiler by means of solid 45 and plane 82 in this paper. The specified critical sections in the boiler are linearly treated, and then the stresses for all the parts of the boiler are calculated and classified.As mentioned above the contents of the analysis in this article and the conclusions drawn from the above are reasonable. Keywords: boiler; finite element; stress analysis; fatigue analysis 目 录 TOC \o 1-2 \h \z \u HYPERLINK \l _Toc233383040 第1章 概 述 PAGEREF _Toc233383040 \h 1 HYPERLINK \l _Toc233383041 1.1 引言 PAGEREF _Toc233383041 \h 1 HYPERLINK \l _Toc233383042 1.2 研究现状 PAGEREF _Toc233383042 \h 1 HYPERLINK \l _Toc233383043 1.3 研究意义 PAGEREF _Toc233383043 \h 1 HYPERLINK \l _Toc233383044 1.4 本文的主要工作 PAGEREF _Toc233383044 \h 2 HYPERLINK \l _Toc233383045 第2章 压力容器简介 PAGEREF _Toc233383045 \h 3 HYPERLINK \l _Toc233383046 2.1 压力容器的组成 PAGEREF _Toc233383046 \h 3 HYPERLINK \l _Toc233383047 2.2 压力容器的分类 PAGEREF _Toc233383047 \h 3 HYPERLINK \l _Toc233383048 2.3 压力容器用钢的基本要求 PAGEREF _Toc233383048 \h 4 HYPERLINK \l _Toc233383049 2.4 压力容器的失效 PAGEREF _Toc233383049 \h 7 HYP