基于Flexsim的粮食企业仓储系统仿真与优化

发布时间：2018-03-25 18:03

本文选题：粮食仓储系统　切入点：仿真　出处：《兰州交通大学》2017年硕士论文

【摘要】：粮食是关系民生的大问题,粮食仓储在粮食流通体系中占据着非常重要的地位。国内大背景下,国家近两年新建粮仓仓容1亿吨,预计到2020年全国需要再新建仓容1亿吨。而现有粮食企业仓储系统存在运作效率低,库内资源配置不合理,设备利用率低和仓储成本高等问题。因此,降低仓储费用,加快周转率,提高运作效率已成为了亟待解决的问题。基于国内大背景和整个粮食行业面临的问题,本文将研究对象定位于粮食企业仓储系统,主要对其出入库作业进行研究。由于物流仓储系统具有不确定性和复杂性,本文采用Flexsim仿真软件对粮食企业仓储系统进行建模、仿真、分析和优化,以达到提高粮食企业仓储系统运行效率的目的。本文首先对粮食企业仓储系统进行了综合性分析,建立起系统的出入库作业流程,重点分析了三种主要类型粮仓的仓储工艺,并确立了整个仓储系统的评价指标体系。其次,详细概括了离散事件系统仿真及Flexsim软件的相关理论知识。然后,以系统概念模型为基础建立了以效率最大化为目标的数学模型,与概念模型相比较,数学模型更能对粮食企业仓储系统进行量化说明。在此基础上,运用Flexsim软件建立粮食企业仓储系统的出入库仿真模型。确定系统具体的仿真目标,对模型进行适当的简化与假设,设定模型中实体的参数并运行仿真模型。通过详细分析仿真输出结果,找到系统瓶颈并对存在问题予以优化。最后,将粮食企业仓储系统出入库仿真模型及其优化方法应用到成都市某粮食企业,进行案例分析。根据企业的实际情况,对仿真模型设定新的参数并运行,分析模型找到其存在问题。根据优化方法,对模型提出具体的优化方案并验证方案的合理性。结果表明优化后的出入库仿真模型可以消除系统瓶颈,提高系统作业效率。本文的研究契合了粮食企业实际发展的需求,为我国粮食企业仓储成本的降低、仓储效率的提高提供了一定的参考价值,同时也能对国内即将进行的粮仓仓容建设大潮起到推动作用。
[Abstract]:Grain is a major issue related to people's livelihood, and grain storage occupies a very important position in the grain circulation system. In the domestic context, the new granary built by the state in the past two years has a capacity of 100 million tons. It is estimated that by 2020, the whole country will need to build another 100 million tons of storage capacity. However, the existing storage systems of grain enterprises have problems such as low operational efficiency, unreasonable allocation of resources in warehouses, low utilization of equipment and high storage costs. Therefore, reduce storage costs. To speed up the turnover rate and improve the operational efficiency has become an urgent problem to be solved. Based on the domestic background and the problems faced by the whole grain industry, this paper focuses on the storage system of grain enterprises. Due to the uncertainty and complexity of the logistics warehousing system, this paper uses Flexsim software to model, simulate, analyze and optimize the storage system of grain enterprises. In order to improve the operational efficiency of grain enterprise storage system, this paper firstly analyzes the grain enterprise storage system, establishes the operation flow of the system, and analyzes the storage technology of three main types of grain warehouse. The evaluation index system of the whole storage system is established. Secondly, the theoretical knowledge of discrete event system simulation and Flexsim software is summarized in detail. Then, based on the system conceptual model, a mathematical model aiming at maximizing efficiency is established. Compared with the conceptual model, the mathematical model can quantify the storage system of grain enterprises. On this basis, the Flexsim software is used to establish the simulation model of the storage system of grain enterprises, and the specific simulation objectives of the system are determined. The model is simplified and hypothesized properly, the parameters of the entity in the model are set and the simulation model is run. By analyzing the simulation output in detail, the bottleneck of the system is found and the existing problems are optimized. The simulation model and its optimization method of grain storage system are applied to a grain enterprise in Chengdu, and the case is analyzed. According to the actual situation of the enterprise, the new parameters of the simulation model are set up and run. According to the optimization method, the concrete optimization scheme is put forward and the rationality of the scheme is verified. The results show that the optimized model can eliminate the bottleneck of the system. The research in this paper accords with the actual development needs of grain enterprises, and provides a certain reference value for the reduction of storage cost and the improvement of storage efficiency of grain enterprises in China. At the same time, it can also promote the construction of granary capacity in China.
【学位授予单位】：兰州交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：F324;TP391.9

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