基于CAD与FEM的塔机结构分析参数化技术研究与应用
发布时间：2019-05-19 19:24
【摘要】：对于由多种标准部件组成的塔式起重机而言，将这类标准节（单元）进行特定组合以形成不同的工作状况，既是实现其功能的基础，也是其工作的基本属性。目前，在设计过程中普遍采用有限元软件进行分析和校核，考虑到使用有限元建模比较繁琐，因此简化有限元建模过程对于提高设计效率而言就显得非常重要。 本论文的第一部分旨在对塔式起重机有限元建模过程进行创新性研究，充分利用常用的建模软件AutoCAD和有限元软件ANSYS，开发出一套完整的系统。该系统主要由建模、转化、有限元前处理、装配等几部分组成。利用ObjectARX.Net对AutoCAD进行二次开发，利用APDL对ANSYS进行二次开发，利用MFC编制参数输入界面，将AutoCAD的建模与ANSYS的前处理整合起来。本系统通过读取CAD的三维线框图，并将这些线框图转化为特定有限元模型，利用参数化装配技术，组装出各个标准单元与结构，从而建立起各种常用的塔式起重机整机或部件的有限元模型。本程序能建立各种常见的塔帽式，动臂式，平头式，撑杆式塔式起重机。并且可在短时间内快速对各个结构进行任意装配组装。同时在AutoCAD中对相应线框模型进行修改也可以转换到有限元模型中，并可以充分的利用已有CAD图形来建立各种工况下的塔机模型。这种全新建模思路和CAD与CAE在塔机方面的集成技术有效的解决了塔式起重机在多工况分析的过程中反复建模的问题，显著提高了设计与分析的效率。 本论文的第二部分对QTZ2400塔式起重机作了结构设计，在设计过程中参阅最新的标准与规范，设计出了起重力矩为2400吨米的上回转、自升式、动臂式塔式起重机结构。同时，为了满足设计的合理与可靠性，充分利用上述开发的“基于CAD与FEM参数化装配系统”的优势，，在特定载荷组合条件下对塔机结构在多工况下进行整体的有限元建模与分析，校验了各项力学性能，确保了设计的合理有效。
[Abstract]:For tower cranes composed of a variety of standard components, it is not only the basis of its function, but also the basic attribute of its work to combine this kind of standard section (unit) to form different working conditions. At present, finite element software is widely used for analysis and verification in the design process. Considering that it is tedious to use finite element modeling, it is very important to simplify the finite element modeling process in order to improve the design efficiency. The first part of this paper aims at innovative research on the finite element modeling process of tower crane, and makes full use of the commonly used modeling software AutoCAD and finite element software ANSYS, to develop a complete system. The system is mainly composed of modeling, transformation, finite element pre-processing, assembly and so on. The secondary development of AutoCAD is carried out by ObjectARX.Net, the secondary development of ANSYS is carried out by APDL, and the parameter input interface is compiled by MFC, and the modeling of AutoCAD is integrated with the preprocessing of ANSYS. By reading the three-dimensional line block diagram of CAD and transforming these line diagrams into specific finite element models, the system assembles each standard element and structure by using parametric assembly technology. Thus, the finite element model of the whole machine or components of various commonly used tower cranes is established. This program can establish a variety of common tower cap type, moving arm type, flat head type, brace tower crane. And can quickly assemble and assemble each structure in a short period of time. At the same time, the modification of the corresponding wireframe model in AutoCAD can also be transformed into the finite element model, and the existing CAD graphics can be fully used to establish the tower crane model under various working conditions. This new modeling idea and the integration technology of CAD and CAE in tower crane effectively solve the problem of repeated modeling of tower crane in the process of multi-working condition analysis, and significantly improve the efficiency of design and analysis. In the second part of this paper, the structure of QTZ2400 tower crane is designed, and the structure of tower crane with lifting torque of 2400 tons and meters is designed by referring to the latest standards and specifications in the process of design. At the same time, in order to meet the rationality and reliability of the design, we should make full use of the advantages of the "parametric assembly system based on CAD and FEM" developed above. Under the condition of specific load combination, the whole finite element modeling and analysis of tower crane structure under multiple working conditions are carried out, and the mechanical properties are verified to ensure the reasonable and effective design.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH213.3
本文编号：2481002
[Abstract]:For tower cranes composed of a variety of standard components, it is not only the basis of its function, but also the basic attribute of its work to combine this kind of standard section (unit) to form different working conditions. At present, finite element software is widely used for analysis and verification in the design process. Considering that it is tedious to use finite element modeling, it is very important to simplify the finite element modeling process in order to improve the design efficiency. The first part of this paper aims at innovative research on the finite element modeling process of tower crane, and makes full use of the commonly used modeling software AutoCAD and finite element software ANSYS, to develop a complete system. The system is mainly composed of modeling, transformation, finite element pre-processing, assembly and so on. The secondary development of AutoCAD is carried out by ObjectARX.Net, the secondary development of ANSYS is carried out by APDL, and the parameter input interface is compiled by MFC, and the modeling of AutoCAD is integrated with the preprocessing of ANSYS. By reading the three-dimensional line block diagram of CAD and transforming these line diagrams into specific finite element models, the system assembles each standard element and structure by using parametric assembly technology. Thus, the finite element model of the whole machine or components of various commonly used tower cranes is established. This program can establish a variety of common tower cap type, moving arm type, flat head type, brace tower crane. And can quickly assemble and assemble each structure in a short period of time. At the same time, the modification of the corresponding wireframe model in AutoCAD can also be transformed into the finite element model, and the existing CAD graphics can be fully used to establish the tower crane model under various working conditions. This new modeling idea and the integration technology of CAD and CAE in tower crane effectively solve the problem of repeated modeling of tower crane in the process of multi-working condition analysis, and significantly improve the efficiency of design and analysis. In the second part of this paper, the structure of QTZ2400 tower crane is designed, and the structure of tower crane with lifting torque of 2400 tons and meters is designed by referring to the latest standards and specifications in the process of design. At the same time, in order to meet the rationality and reliability of the design, we should make full use of the advantages of the "parametric assembly system based on CAD and FEM" developed above. Under the condition of specific load combination, the whole finite element modeling and analysis of tower crane structure under multiple working conditions are carried out, and the mechanical properties are verified to ensure the reasonable and effective design.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH213.3
【参考文献】
相关期刊论文 前10条
1 黄洪钟,姚新胜;塔式起重机安全性研究与展望[J];安全与环境学报;2001年03期
2 章崇任;;日本内爬式塔式起重机的发展趋势[J];工程机械;2007年04期
3 贾文华;殷晨波;;塔式起重机CAD系统的研究与开发[J];工程机械;2009年01期
4 陆旭;周见行;姜伟;;基于APDL的塔式起重机有限元参数化建模与分析[J];机电工程;2009年07期
5 王凯,周慎杰;80吨履带起重机桁架式臂架系统的有限元分析[J];机械设计与研究;2005年05期
6 金治勇;;不断跨越的中国大型塔机[J];建筑机械化;2009年11期
7 麻效奇,黄轶逸;世界最大塔式起重机及其特点分析[J];建筑机械;2002年08期
8 杜波;陈世教;;塔式起重机计算机辅助设计的研制及程序系统实现[J];建筑机械;2009年01期
9 梅琨;孔庆璐;;中国塔式起重机行业发展历程(上)[J];建筑机械;2009年19期
10 梅琨;孔庆璐;;中国塔式起重机行业发展历程(下)[J];建筑机械;2009年21期
本文编号：2481002
本文链接：https://www.wllwen.com/kejilunwen/jixiegongcheng/2481002.html
