Nowadays the firms are competing in a very turbolent landscape characterized by unsteady demand and supply, product lifecycle decrease and hard globalization. In such a business background the focus of a firm must be about the total customer satisfation and the cost reduction in order to compete succesfully in the market. Lean approach, born in 50's, with its principles, tools and philosophy could help actual firms to improve not only their own business performances, but also the supply chain's performances, aiming to reach this competitive advantages. This thesis aims to assess the benefits of the lean approach, implemented through the kanban system, towards the economic order quantity (EOQ) and the information sharing (visibility) policies, in a multi-product supply chain. In order to reach this goal, we builded and simulated, through Arena software, a model that represent a multi-product supply chain managed by these three different production and control policies. In addiction we investigated the effects, on the supply chain performance, of the final demand variability enhancement and the reduction of the batch size in the kanban system. This study proved that the introduction of lean approach could lower the costs throughout the supply chain. The simulation results are compared with the ones concerning a mono-product model dealing with the same three production and control policies. This analysis proved that kanban system in a multi-product environment, compared with a mono-product context, could reach better performances towards a EOQ or visibility policy.
L’attuale arena di business in cui le imprese si trovano oggi a competere è caratterizzata da forte turbolenza, instabilità della domanda e della fornitura, decremento del ciclo di vita dei prodotti, globalizzazione spinta. In tale contesto riuscire a soddisfare pienamente i propri clienti e al contempo ridurre i costi è fondamentale per competere con successo sul mercato.. L’approccio lean, nato negli anni ’50 del secolo scorso, con i suoi principi, i suoi strumenti e la sua filosofia, è ancora adesso in grado di migliorare drasticamente le performance delle odierne imprese e delle loro filiere produttive, garantendo proprio quel vantaggio competitivo tanto ricercato. Questo elaborato ha innanzitutto lo scopo di valutare se l’applicazione della politica lean, implementata attraverso il sistema kanban, in una supply chain multi-prodotto porti benefici rispetto alla logica di produzione basata sul lotto economico e alla politica basata sulla condivisione di informazioni (visibility). A tale scopo è stato costruito e simulato, tramite il software di simulazione Arena, un modello che rispecchiasse una supply chain multi-prodotto gestita sotto queste tre diverse logiche produttive. Vengono inoltre valutati gli impatti, sulle performance della filiera, dell’aumento della variabilità della domanda e della politica di riduzione di lotto nel sistema kanban. L’elaborato dimostrerà che attraverso l’introduzione del sistema kanban si può garantire un risparmio finanziario lungo tutta la supply chain. I risultati ottenuti dalla simulazione verranno poi confrontati con quelli relativi a una supply chain mono-prodotto operante sotto le medesime logiche. Tale analisi dimostrerà che la politica lean in una filiera multiprodotto, confrontata con un contesto mono-prodotto, ottiene risparmi maggiori, rispetto a una logica basata sul lotto economico o sulla visibility.
Analisi tramite simulazione del sistema kanban in una supply chain multiprodotto
PEDRAGLIO, PAOLO;MONTI, LUCA
2014/2015
Abstract
Nowadays the firms are competing in a very turbolent landscape characterized by unsteady demand and supply, product lifecycle decrease and hard globalization. In such a business background the focus of a firm must be about the total customer satisfation and the cost reduction in order to compete succesfully in the market. Lean approach, born in 50's, with its principles, tools and philosophy could help actual firms to improve not only their own business performances, but also the supply chain's performances, aiming to reach this competitive advantages. This thesis aims to assess the benefits of the lean approach, implemented through the kanban system, towards the economic order quantity (EOQ) and the information sharing (visibility) policies, in a multi-product supply chain. In order to reach this goal, we builded and simulated, through Arena software, a model that represent a multi-product supply chain managed by these three different production and control policies. In addiction we investigated the effects, on the supply chain performance, of the final demand variability enhancement and the reduction of the batch size in the kanban system. This study proved that the introduction of lean approach could lower the costs throughout the supply chain. The simulation results are compared with the ones concerning a mono-product model dealing with the same three production and control policies. This analysis proved that kanban system in a multi-product environment, compared with a mono-product context, could reach better performances towards a EOQ or visibility policy.File | Dimensione | Formato | |
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https://hdl.handle.net/10589/118623