YDG型堆料机臂架形变分析及拓扑结构优化设计
发布时间：2019-02-13 14:56
【摘要】：堆料机是圆形料场的一个重要组成部分,它主要用于堆放由进料主皮带机传送来的物料。堆料机结构对堆料机的性能起着至关重要的作用,但国内现有大部分堆料机都存在着以下缺陷：控制系统故障,皮带跑偏,挠度过大,结构笨重等。为了解决结构笨重问题,本文以轻量化设计为主线展开研究。 文中介绍了堆料机在国内外的研究现状和主要存在的问题,针对新设计的堆料机模型存在的问题,提出了拓扑优化设计概念,打破传统的设计结构和设计方法,设计出一种结构更优的堆料机臂架,大大的节省了结构材料,并为后续的尺寸优化奠定了基础。主要的研究成果和工作如下： (1)查阅了国内外关于堆料机方面的研究成果,总结了目前堆料机的研究现状和现存结构的缺陷。 (2)应用APDL语言建立了YDG90/1600堆料机臂架的参数化结构,应用有限单元法计算分析得到臂架的最大应力为：203.976MPa,最大挠度为99.5mm,虽然其结构强度、刚度及稳定性满足工程设计要求,但其结构笨重,安全富余量较大,且钢耗和能耗较大。 (3)应用有限元软件ANSYS中的拓扑优化模块对其进行优化。针对臂架最危险工况,对比多种省材方案,采用省材60%的方案进行拓扑优化设计,得到臂架的概念模型。 (4)参照臂架的概念模型,对臂架进行结构设计,并对臂架模型进行有限元结构分析,得到优化后的结构最大应力比优化前增大了20.08MPa,挠度较优化前的减小了9.1mm,交叉角钢减少了48根,体积也较之前减少了20.3%,大大的节省了材料,降低了制造成本。 (5)应用相似理论建立了堆料机的实验模型,结合惠斯登电桥法,利用应变片测量了堆料机主要部位的应变,并将所得实验结果与仿真应力等值线图进行对比分析,两者结果基本一致,从而进一步的验证了堆料机结构的合理性。
[Abstract]:The stacker is an important part of the circular yard. It is mainly used to store the material transferred from the main belt feeder. The stacker structure plays an important role in the performance of the stacker, but most of the stowers in China have the following defects: control system failure, belt deviation, excessive deflection, heavy structure and so on. In order to solve the problem of heavy structure, this paper focuses on lightweight design. In this paper, the research status and main problems of stacker at home and abroad are introduced. Aiming at the problems existing in the newly designed stacker model, the concept of topology optimization design is put forward to break the traditional design structure and design method. A better stacker boom is designed, which saves the material greatly and lays the foundation for the following dimension optimization. The main research results and work are as follows: (1) the research results of stacker at home and abroad are reviewed, and the current research status and the defects of existing structure of stacker are summarized. (2) the parameterized structure of the boom of YDG90/1600 stacker is established by using APDL language. The maximum stress of the boom is 203.976 MPA and the maximum deflection is 99.5mm, although its structural strength is calculated and analyzed by finite element method. The stiffness and stability meet the requirements of engineering design, but the structure is heavy, the safety surplus is large, and the steel consumption and energy consumption are large. (3) the topology optimization module of finite element software ANSYS is used to optimize it. Aiming at the most dangerous working conditions of the boom, the conceptual model of the boom is obtained by adopting the 60% saving material scheme to optimize the topology of the boom. (4) with reference to the conceptual model of the boom, the structural design of the boom is carried out, and the finite element structural analysis of the boom model is carried out. The results show that the maximum stress ratio of the optimized structure is increased by 20.08 MPa before optimization, and the deflection is reduced by 9.1 mm compared with that before optimization. The cross angle steel is reduced by 48 pieces and the volume of the cross angle steel is reduced by 20. 3%, which greatly saves the material and reduces the manufacturing cost. (5) the experiment model of stacker is established by using similarity theory, and the strain of main parts of stacker is measured by strain gauge combined with Wheatstone bridge method, and the experimental results are compared with the simulation stress isoline diagram. The two results are basically consistent, which further verifies the reasonableness of the stacker structure.
【学位授予单位】：中南大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH246
本文编号：2421669
[Abstract]:The stacker is an important part of the circular yard. It is mainly used to store the material transferred from the main belt feeder. The stacker structure plays an important role in the performance of the stacker, but most of the stowers in China have the following defects: control system failure, belt deviation, excessive deflection, heavy structure and so on. In order to solve the problem of heavy structure, this paper focuses on lightweight design. In this paper, the research status and main problems of stacker at home and abroad are introduced. Aiming at the problems existing in the newly designed stacker model, the concept of topology optimization design is put forward to break the traditional design structure and design method. A better stacker boom is designed, which saves the material greatly and lays the foundation for the following dimension optimization. The main research results and work are as follows: (1) the research results of stacker at home and abroad are reviewed, and the current research status and the defects of existing structure of stacker are summarized. (2) the parameterized structure of the boom of YDG90/1600 stacker is established by using APDL language. The maximum stress of the boom is 203.976 MPA and the maximum deflection is 99.5mm, although its structural strength is calculated and analyzed by finite element method. The stiffness and stability meet the requirements of engineering design, but the structure is heavy, the safety surplus is large, and the steel consumption and energy consumption are large. (3) the topology optimization module of finite element software ANSYS is used to optimize it. Aiming at the most dangerous working conditions of the boom, the conceptual model of the boom is obtained by adopting the 60% saving material scheme to optimize the topology of the boom. (4) with reference to the conceptual model of the boom, the structural design of the boom is carried out, and the finite element structural analysis of the boom model is carried out. The results show that the maximum stress ratio of the optimized structure is increased by 20.08 MPa before optimization, and the deflection is reduced by 9.1 mm compared with that before optimization. The cross angle steel is reduced by 48 pieces and the volume of the cross angle steel is reduced by 20. 3%, which greatly saves the material and reduces the manufacturing cost. (5) the experiment model of stacker is established by using similarity theory, and the strain of main parts of stacker is measured by strain gauge combined with Wheatstone bridge method, and the experimental results are compared with the simulation stress isoline diagram. The two results are basically consistent, which further verifies the reasonableness of the stacker structure.
【学位授予单位】：中南大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH246
【引证文献】
相关期刊论文 前1条
1 潘修强;梅成才;陈军杰;;基于DCNLP的机器手臂最优化控制及拉格朗日因子研究[J];计算机应用与软件;2013年05期
，本文编号：2421669
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