&Chapter5:Bullwhipeffectthe value of information主讲车王长琼Objectives:1.Whatisthebullwhipeffect?2.What are thefactors causingthe bullwhipeffect?3.Howto reducethebullwhipeffectoreliminateitsimpact?
Chapter 5: Bullwhip effect & the value of information 主讲 王长琼 Objectives : 1.What is the bullwhip effect ? 2. What are the factors causing the bullwhip effect ? 3.How to reduce the bullwhip effect or eliminate its impact? 1
5.1 IntroductionInformationflow ~materialflow;(inventory)Information type in a SC*Inventorylevels*Orders*Production*Deliverystatus
5.1 Introduction Information flow ~ material flow; (inventory) Information type in a SC Inventory levels Orders Production Delivery status 2
TheValueof Information*Helps reduce variability in the supply chain.* Helps suppliers make betterforecasts,accounting forpromotions and market changes.* Enables the coordination of manufacturing anddistribution systems and strategies.* Enables retailers to better serve their customers byoffering tools for locating desired items.* Enables retailers to react and adapt to supplyproblems more rapidly* Enables lead time reductions3
The Value of Information Helps reduce variability in the supply chain. Helps suppliers make better forecasts, accounting for promotions and market changes. Enables the coordination of manufacturing and distribution systems and strategies. Enables retailers to better serve their customers by offering tools for locating desired items. Enables retailers to react and adapt to supply problems more rapidly. Enables lead time reductions. 3
5.2Bullwhip Effect1.What is the bullwhip effect ? (p. 133 ~136)*While customer demand for specific productsdoes not vary much* Inventory and back-order levels fluctuateconsiderably across their supply chainP&G'sdisposablediaperscase
5.2 Bullwhip Effect While customer demand for specific products does not vary much Inventory and back-order levels fluctuate considerably across their supply chain P&G’s disposable diapers case 1.What is the bullwhip effect ? (p. 133 ~136) 4
4-Stage Supply ChainExternalDemandRetailerFIGURE5-5:ThesupplychainOrderleadtimeDelivery leadtime?Sales quite flatWholesaler.Distributor orders fluctuateOrderleadtimeDeliveryleadtimemore thanretail salesDistributor?Supplier orders fluctuateOrderleadtimeDeliverylead timeeven moreFactoryProductionleadtime
4-Stage Supply Chain FIGURE 5-5: The supply chain • Sales quite flat • Distributor orders fluctuate more than retail sales • Supplier orders fluctuate even more 5