Parameterization of MRP for Supply Planning Under Lead Time Uncertainties

Dolgui, Alexandre; Hnaien, Faicel; Louly, A.; Marian, Hélène

doi:10.5772/5346

Cited by 5 publications

(2 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In real life situation, the deterministic assumptions embedded in MRP are often too limited [2]. Lead time is a very vital parameter in production and inventory costs.…”

Section: Introductionmentioning

confidence: 99%

Multilevel Production Systems with Dependent Demand with Uncertainty of Lead Times

Sadeghi

Makui

Heydari

2016

Mathematical Problems in Engineering

View full text Add to dashboard Cite

This study considers a multilevel assembly system with several components in each sublevel. It is assumed that actual lead time for all components is probabilistic; and periodic order quantity (POQ) policy for ordering is utilized. If at a certain level a job is not received at the expected time, a delay is incurred at the delivery of production at this level and this may result in backorders of the finished product. It is assumed in this case that a fixed percentage of the shortage is backlogged and other sales are lost. In the real situation, some but not all customers will wait for backlogged components during a period of shortage, such as for fashionable commodities or high-tech products with the short product life cycle. The objective of this study is to find the planned lead time and periodicity for the total components in order to minimize the expected fixed ordering, holding, and partial backlogging costs for the finished product. In this study, it is assumed that a percentage of components at each level are scrap. A general mathematical model is suggested and the method developed can be used for optimization planned lead time and periodicity for such an MRP system under lead time uncertainties.

show abstract

“…In real life situation, the deterministic assumptions embedded in MRP are often too limited [2]. Lead time is a very vital parameter in production and inventory costs.…”

Section: Introductionmentioning

confidence: 99%

Multilevel Production Systems with Dependent Demand with Uncertainty of Lead Times

Sadeghi

Makui

Heydari

2016

Mathematical Problems in Engineering

View full text Add to dashboard Cite

show abstract

“…Molinder (1997) showed that both the uncertainty of the lead time and demand variability involve the level of optimal safety lead times and optimal safety stocks. Dolgui et al (2008) studied the MRP parameterization problem for two-level assembly systems with random component procurement times. They explained that lead time uncertainties seem to be insufficiently studied for a long time, favouring the study of demand uncertainties.…”

Section: Introduction and Related Publicationsmentioning

confidence: 99%