基于工程经验数值化的垂直螺旋输送机寻优设计

发布时间：2018-01-31 16:33

本文关键词： 垂直螺旋输送机离散单元法有限元分析微粒群优化算法　出处：《太原科技大学》2017年硕士论文　论文类型：学位论文

【摘要】：我国物流行业发展迅速,经过进一步集成和发展逐渐朝着规模化、标准化、协同化的方向发展。垂直螺旋输送机作为散料输送的关键装备,在散货专用港口的装备率很高,应用十分广泛。由于其工作环境恶劣,使用中存在许多问题,如输送效率低、能源使用率低以及产生物料堵塞和颗粒破损等诸多问题急需解决,对输送机的设计要求有所提高。垂直螺旋输送机在设计中还存在一些缺陷和不足,设计人员的相关从业经验对产品的结构和性能参数影响较大,设计计算的科学性和精确度有一定的欠缺。本文经过对螺旋输送机输送理论和设计方法的研究分析,以《连续输送机械设计手册》中的实际工程统计数据为基础,通过Visual Basic编译平台,以输送效率最高为原则编制垂直螺旋输送机专用设计计算软件。采用离散元法模拟软件EDEM,通过标定实验确定模拟参数,模拟垂直螺旋输送机对散体物料的提升过程,进一步验证专用设计软件的准确性、可靠性。并利用EDEM强大的后处理工具,分析输送过程中物料颗粒的流动状态、空间分布、及其对输送机结构部件的作用力情况。根据稳定输送中螺旋体的载荷分布情况,利用有限元软件ANSYS采用APDL参数化语言对输送机螺旋体模态分析,得到螺旋体的固有频率和危险部位,在设计中引起设计人员的必要关注。最后基于有限元分析通过微粒群优化算法对螺旋体轻量化设计。
[Abstract]:Logistics industry is developing rapidly in our country. Through further integration and development, it is gradually developing towards the direction of scale, standardization and coordination. Vertical screw conveyor is the key equipment of bulk material transportation. The equipment rate of special port for bulk cargo is very high, and it is widely used. Because of its poor working environment, there are many problems in its use, such as low transportation efficiency. The low utilization rate of energy and the problems such as material clogging and particle breakage are urgently needed to be solved, and the design requirements of the conveyer are improved. There are still some defects and deficiencies in the design of vertical screw conveyer. The related experience of the designer has a great influence on the structure and performance parameters of the product. The design and calculation of the scientific and accuracy of some shortcomings. This paper through the screw conveyor transport theory and design methods of research and analysis. Based on the actual engineering statistical data in the Design Manual of continuous conveying Machinery, the compiling platform of Visual Basic is adopted. The special design and calculation software for vertical screw conveyer is compiled according to the principle of maximum transportation efficiency. The simulation software EDEM is used to determine the simulation parameters by calibration experiment. To simulate the lifting process of vertical screw conveyer to bulk material, to further verify the accuracy and reliability of the special design software, and to use the powerful post-processing tool of EDEM. The flow state, spatial distribution and the force on the structural parts of the conveyer are analyzed, and the load distribution of the spirals in the stable conveying process is analyzed. Using the finite element software ANSYS, the modal analysis of the conveyer helix is carried out with APDL parameterized language, and the natural frequencies and dangerous parts of the helix are obtained. It is necessary to pay attention to the design in the design. Finally, based on the finite element analysis, the particle swarm optimization algorithm is applied to the lightweight design of the helix.
【学位授予单位】：太原科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH224

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