面向平面钢筋混凝土有限元分析的前处理软件开发

发布时间：2018-01-16 08:15

本文关键词：面向平面钢筋混凝土有限元分析的前处理软件开发　出处：《华中科技大学》2015年硕士论文　论文类型：学位论文

【摘要】：钢筋混凝土结构在工程建设中有着广泛的应用,有限元法作为一种强有力的数值分析方法对其非线性问题的求解十分有效。有限元分析方法一般包含三个步骤:前处理、有限元分析计算和后处理。本文针对河海大学研制的钢筋混凝土平面非线性有限元分析程序,利用AutoCAD面向对象的二次开发工具ObjectARX,开发研制基于平面钢筋混凝土有限元前处理软件。该前处理软件在AutoCAD平台上以交互输入的方式建立结构体模型,并配有大量的可视化窗体、完善的结构体材料库和网格剖分模块。其逻辑功能强大,实现了有限元前处理的可视化以及绘图软件AutoCAD与非线性有限元分析程序的无缝集成。本软件的主要工作包含以下几个部分:其一,建立完善的材料库,实现结构体材料的添加、选择、修改和删除功能;其二,开发出合适的网格剖分模块,对任何结构体能够实现网格剖分,且网格剖分结果满足有限元计算要求;其三,添加荷载约束条件,将结构体实际受力情况、温度作用和边界约束等完整的模拟出来;其四,构建工程管理菜单,将该工程的进行有序的组织起来,实现该软件的结构化、有序化。本文以“单洞”模型为例,验证了该前处理软件网格剖分、荷载施加、约束添加等功能的可适用性,达到了预期效果。
[Abstract]:Reinforced concrete structure is widely used in engineering construction. As a powerful numerical analysis method, finite element method is very effective in solving nonlinear problems. Finite element analysis and post-processing. This paper aims at the nonlinear finite element analysis program of reinforced concrete plane developed by Hehai University. Using AutoCAD object-oriented secondary development tool ObjectARX. The pre-processing software based on plane reinforced concrete finite element method is developed. The pre-processing software builds the structure model in the way of interactive input on the AutoCAD platform and has a large number of visual forms. Perfect structure material library and mesh generation module. Its logic function is powerful. The visualization of finite element preprocessing and the seamless integration of the drawing software AutoCAD and the nonlinear finite element analysis program are realized. The main work of this software includes the following parts: first. Establish perfect material library to realize the function of adding, selecting, modifying and deleting structure material; Secondly, a suitable mesh generation module is developed, which can realize mesh generation for any structure, and the mesh generation results meet the requirements of finite element calculation. Thirdly, the load constraint condition is added to simulate the actual force, temperature and boundary constraints of the structure. Fourthly, the project management menu is constructed, the project is organized in an orderly manner, and the software is structured and ordered. This paper takes the "single hole" model as an example to verify the mesh generation of the pre-processing software. The applicability of the functions such as loading, constraint addition and so on has achieved the expected effect.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU375

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