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摘要随着社会的发展，企业的竞争变为供应链的竞争，其中库存方面尤为重要，供应商管理库存能有效降低总库存，提升企业竞争力。针对供应商管理库存系统复杂和动态性，本设计创新地运用系统动力学方法，研究整个供应商管理库存系统，通过对影响因素的分析，对企业不断优化库存策略具有重大意义。本文对制造型企业的供应商管理库存系统进行了研究，并根据实际情况进行建模以及仿真分析。主要研究内容包括：1.介绍供应链管理库存的基本概念，优势及目标。又阐述了系统动力学的基础理论，确定了供应商管理库存系统在系统动力学的系统边界，为建模做准备。2.通过研究系统的运作机理、划分子系统，以系统动力学为工具，建立了针对单一产品、基于VMI策略的供应链动态仿真模型。3.运用Vensim_PLE软件，针对供应链过程中的关键影响因素进行了定量的分析，找出了4个主要变量，即订货时间、运输时间、库存调节时间和期望库存量对VMI系统平均总库存和稳定性的影响规律，从牛鞭效应、瓶颈对模型进行了分析和优化，最终确定了在一定条件下的具体实施策略，为企业制定物流库存方面决策提供辅助和参考。关键词：供应商管理库存；控制影响因素；系统动力学TheSystemDynamicsSimulationandControlFactorsAnalysisofVMIInventoryAbstract:Withthedevelopmentofsociety,thecompetitivenessofenterpriseshasbecomesupplychaincompetition,besides,inventoryisparticularlyimportant.Vendormanagedinventorycaneffectivelyreducethetotalinventory,what’smore,itcanimprovethecompetitivenessofenterprises.Asvendor-managedinventorysystemiscomplex,sowecanusesystemdynamicsmethodtostudytheentirevendormanagedinventorysystem,throughtheanalysisofthefactors,itisofgreatsignificancetoaffecttheenterprisetooptimizeinventorypolicy.ManufacturingenterprisesVMIsystemisstudiedinthispaper,andinaccordancewiththeactualsituationofmodelingandsimulationanalysis.Themaincontentsinclude:1.Itisintroductedofbasicconcepts,advantagesandobjectivesofVMI.Alsothebasictheoryofsystemdynamicsisdescribedtodeterminethevendor-managedinventorysysteminsystemdynamicssystemboundary,inpreparationforthemodeling.2.Theoperationofthesystembystudyingthemechanismofdivisionsubsystemtosystemdynamicsasatoolcreatedforasingleproduct,policy-basedVMIsupplychaindynamicsimulationmodel.3.UseVensim_PLEsoftwareforsupplychainprocessofthekeyfactorsaffectingaquantitativeanalysistoidentifythefourmainvariables,namelyorderingtime,transporttime,inventoryadjustmenttimeandexpectstocksonaveragetotalinventoryandVMIsystemstabilityofthelaw,fromthebullwhipeffect,thebottleneckofthemodelisanalyzedandoptimized,andultimatelydetermineundercertainconditions,thespecificimplementationstrategiesforenterprisestodeveloplogisticsinventorydecisionsauxiliaryandreference.Keywords:Vendor-managedInventory;InfluencingFactors;SystemDynamics目录1绪论............................................................................................................................11.1设计背景和意义...............................................................................................11.2国内外研究现状..............................................................................................21.2.1VMI国内外研究应用现状.......................................................................21.2.2系统动力学在库存管理中研究应用现状.............................................31.3研究目的与内容................................................................................................41.3.1研究目的................................................................................................41.3.2研究内容.................................................................................................42供应商管理库存理论及系统动力学理论................................................................52.1供应商管理库存概述......................................................................................52.1.1供应商管理库存的概念........................................................................52.1.2供应商管理库存的优势........................................................................62.2系统动力学理论..............................................................................................62.2.1系统动力学的特点..............................................................................62.2.2系统动力学对系统的数学描述..........................................................72.2.3系统动力学方法的选择......................................................................83供应商管理库存控制机制的系统动力学建模........................................................93.1供应商管理库存系统分析..............................................................................93.1.1系统目标分析....................................................................................103.1.2系统假设与系统边界........................................................................103.1.3系统的运动机理.................................................................................113.1.4划分子系统........................................................................................123.2影响因素分析................................................................................................123.2.1时间影响因素分析............................................................................123.2.2库存量影响因素分析........................................................................133.2.3供应商管理库存的其他影响因素分析..............................................133.3因果关系的确定............................................................................................133.3.1系统因果关系图................................................................................133.3.2模型反馈关系分析............................................................................143.4模型流图分析................................................................................................153.4.1模型的流图表示.......................................................................