Information sharing policies based on tokens to improve supply chain performances

Abstract

One of the most studied dynamics of supply chains is a phenomenon that has been named ‘the bullwhip effect’. What happens is that variations in customer demand are translated into wider and wider variations in orders issued by companies along the supply chain, affecting performances and increasing the level of complexity in transactions and relationships among partners. This paper introduces the opportunity of measuring the performance of a supply chain in case of disruption, proposing a progressive information sharing technique (token approach) in order to control bullwhip effect. This technique relies on dividing orders into two streams: the first stream transmits the value of the demand to the whole supply chain echelons whereas the second one includes the adjustments needed to keep a stable inventory for each partner of the network. To investigate the token approach, a simulation model is developed for a four-echelon supply chain where it is assumed that lead times for transferring information or materials are deterministic and suppliers have unlimited production and inventory capacities. Four different ordering policies are evaluated and the results analysed to identify general findings.

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