Design of robust supply chains: an integrated hierarchical approach

The following outline describes the content of this dissertation. Chapter 1 gives an introduction to the PhD research, definitions and terminology in addition to the body of the research. Chapter 2 discusses the strategic safety stock placement problem in supply chains. The model used by Graves and Willems (2000) is extended for capacitated supply chains. In this chapter, a simulation is carried out to evaluate the effect of capacity in a single-stage supply chain. It is shown that the size of safety stocks requires some adjustment depending on capacity, average demand and variation of demand. The results are then generalized for a serial supply chain problem, which is solved using a shortest path algorithm. In Chapter 3, the aggregate production planning problem is discussed with the objective to compare two types of robust approaches. A deterministic equivalence model is proposed and evaluated against the well-known scenario based optimization approach. Chapter 4 discusses the integration of production and maintenance planning in a hierarchical way. In this chapter, the idea of translating a higher level plan to a lower level plan is discussed thoroughly. Chapter 5 provides a robust integrated hierarchical planning approach. This chapter deals with two phases of integration: [1] integration between strategic level planning and the tactical level planning and [2] between tactical level planning and operational level planning. A discussion of the PhD work, which includes the scope of the work, its limitations and some unresolved issues, is also presented in this chapter. Chapter 6 wraps up this dissertation with conclusions and suggestions for future research.


Author
Carles Sitompul
Promoter(s)
  • El-Houssaine Aghezzaf
Date
June 1, 2010, 3:53 p.m.
Research group
SNLRC