柱支撑钢筒仓的有限元分析及参数化软件编制

发布时间：2018-01-15 23:04

本文关键词：柱支撑钢筒仓的有限元分析及参数化软件编制　出处：《吉林大学》2017年硕士论文　论文类型：学位论文

【摘要】：随着钢筒仓结构计算和研究的不断进步,由于筒仓的载荷环境比较复杂,许多工程机械公司对于筒仓的设计和有限元分析需要进行流水线作业,进而提高工作效率。而许多筒仓的计算对于载荷的处理较为简单,本文将对物料载荷,风载,雪载进行讨论及拟合,基于ANSYS用APDL语言进行二次开发编制可以用作有限元批量分析的软件进而指导生产.对于钢筒仓结构的载荷环境及工作时的力学环境的研究已经经历了百余年,重点主要在筒仓内散料侧压研究,锥形筒仓转折连接环梁的稳定性研究以及圆柱薄壳仓壁的稳定性研究等方面。而对风载的讨论施加及没有进行细致的研究,这使筒仓在复杂工作环境计算不是十分准确。本文对筒仓研究的国内外现状及筒仓结构进行介绍,阐述其工作原理,对散料压力研究现状进行介绍,对风载通过查找风洞实验资料通过公式进行拟合,根据筒仓的不用的工作环境来进行载荷设定,使计算更加准确便捷.并对主要的研究内容和研究意义进行了阐述和说明。利用软件的语言进行二次开发在工程设计及有限元分析应用较多,本文主要内容是利用基于ANSYS的参数化设计语言(APDL)建立模型,支架,立板,圆柱薄板,圆管,工字梁等结构,划分网格,对单元进行属性赋予,施加载荷,进行静力学分析,模态分析。然后,通过改变筒仓的支架,圆柱薄板半径,支撑座,支腿加强板等尺寸来对不同型号和尺寸的筒仓进行有限元分析,及通过尺寸变化和局部结构形式来进行优化设计从而指导设计和生产。最后,完成软件编写,用软件对筒仓结构进行有限元分析,校核筒仓结构的刚度、强度,比较不同角度风载对空仓的影响程度,分析动态卸料状态及全载荷状态筒仓各个部分的应力和位移情况。对筒仓进行模态分析,总结筒仓振型和刚度特点。
[Abstract]:With the development of structural calculation and research of steel silos, due to the complexity of the loading environment, many construction machinery companies need to carry out pipeline work for silo design and finite element analysis. And the calculation of many silos is relatively simple to deal with the load, this paper will discuss and fit the material load, wind load and snow load. The secondary development based on ANSYS and APDL language can be used as the software of finite element batch analysis to guide production. The load environment and mechanical environment of steel silo structure have been studied. For more than a hundred years. The emphasis is mainly on the side pressure of bulk material in silo, the stability of circular beam of conical silo turning connection and the stability of cylindrical shell wall, etc., but the discussion of wind load has not been studied in detail. This makes the calculation of silo in complex working environment not very accurate. This paper introduces the status quo and structure of silo research at home and abroad, expounds its working principle, and introduces the research status of bulk pressure. The wind load is fitted by looking up the experimental data of wind tunnel, and the load is set according to the unneeded working environment of the silo. To make the calculation more accurate and convenient. And the main research content and research significance are described and explained. Using the software language for secondary development in engineering design and finite element analysis more applications. The main content of this paper is to use the parameterized design language (APDL) based on ANSYS to build the model, frame, vertical plate, cylindrical thin plate, circular tube, I-beam and other structures, and divide them into meshes. Attribute, load, static analysis, modal analysis. Then, by changing the silos of the bracket, cylindrical thin plate radius, support seat. Leg stiffening plate size to different types and sizes of silo finite element analysis, and through the size change and local structure to optimize the design and production to guide the design and production. Finally, the completion of the software programming. The finite element analysis of silo structure is carried out with software to check the stiffness and strength of silo structure and to compare the influence of wind load on empty silo at different angles. The stress and displacement of every part of silo under dynamic unloading state and full load state are analyzed. The modal analysis of silo is carried out and the characteristics of vibration and stiffness of silo are summarized.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU391

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