【作者】 陈昊；

【导师】 王燕群；

【作者基本信息】 天津大学 ， 工程分析与计算力学， 2010， 硕士

【摘要】 目前国内在盾构机刀盘自主设计方面已经取得了一定的成果,但主要依据经验,尚没有形成一套完整成熟的刀盘设计理论。有限元分析是刀盘辅助设计的一个重要手段,但对盾构机刀盘进行分析时,首先需要建立其有限元模型,再对其进行加载计算或三维仿真。由于盾构机刀盘形状和结构特征复杂,其有限元建模需要耗费大量的时间和精力,这给盾构刀盘的设计研究带来很大的不便。为解决此问题,本文基于C++ Builder和ANSYS的APDL语言对ANSYS进行二次开发,建立了一套盾构机刀盘有限元模型自动生成与计算系统。首先本文搜集分析了目前常用经典土压平衡盾构刀盘的几何结构特征,并对刀盘的基本构架进行分类,建立组成刀盘的基本模块和各模块的积木式拼装方法,并利用ANSYS的APDL语言编写有限元模块建模命令流程序,并利用C++ Builder编制用户界面和调用APDL语言编写的模块建模命令流程序,从而实现快捷高效的盾构刀盘有限元模型的生成与计算。该系统为刀盘的设计者提供一个方便快捷的工具,利用该系统,可以快速的自动生成相应的刀盘有限元模型并计算,大大提高盾构刀盘有限元分析的工作效率。本文工作内容主要分为两大部分,分别为用C++ Builder编制用户界面和运用APDL语言编写命令流程序。本文界面程序作为一个桥梁,采集用户输入的参数,调用ANSYS,执行APDL命令流程序。从而用户可以通过对界面的操作,实现盾构机刀盘有限元模型的自动生成与分析。本文开发的盾构刀盘有限元分析体系可以快速的完成盾构刀盘的建模与分析,以往要花费几周的时间才能做完的共工作只需要几分钟就可完成,为研究人员提供了一个便捷、高效的平台。更多还原

【Abstract】 With the development of the manufacturing technology, plenty of domestic cutterheads of shield machine had been manufactured independently, however the design were mainly based on experiences, there is an blank of complete cutterhead design theory. The finite element analysis is an important method for the cutterhead aided design and a finite element model is the foundation and prior condition to the analysis. Due to the complexity of the cutterhead’structure, establishing a finite model is not only time and energy-consuming, but also bring inconvenience to the research of cutterhead.In order to solve the problem, this paper carries on the secondary development of ANSYS based on C + + Builder and APDL, and established a FEM model of cutterhead automatically generation and calculation system.This paper collects the widely used EPB shield cutterheads and classifies the structure of the cutterhead into several basic modules due to its characteristics of the topological structure and builds a block module assembly method. The FEM modeling program is realized by APDL, the user interface module and the calling program of the FEM model are realized by C + + Builder.The system provides a convenient and efficient tool for the cutter designers. It can automatically generate the corresponding finite element model of the cutterhead and then calculate it, greatly increase the efficiency of shield cutter finite element analysis.Two parts are concluded in this paper: the preparation of user interface application by using C++ Builder and the programming of APDL language command stream. As a bridge, the interface application collects the input parameters, and then calls ANSYS、executes the APDL command. The automatic generation and analysis of FEM mode of cutterhead is carried out on the interface of the system.This paper develops a system of cutter heads’finite element analysis which can complete the cutter heads’modeling and analysis in a few minutes, and provides a convenient and efficient platform for the researchers.更多还原