A proposal of analytical formulations to calculate safety lead times under demand variability. A case study

A proposal of analytical formulations to calculate safety lead times under demand variability. A case study

Blog Article

This paper deals with the issue of vive night splint safety lead time (SLT) calculations in production-inventory systems in presence of both demand and replenishment lead time variability.We provide some formulations of the SLT and numerically show their performance as compared to a benchmark in the literature.Thus the main objective of this paper is to provide analytical formulations to calculate the SLT that contemplate demand variability.To this end, a literature review was done to analyze the approaches and justifications of the different revised research works to identify reference formulations according to the objectives of this work.A supply 6love luzern chain from the automotive sector was used as the study frame and to validate the proposed formulations.

This supply chain involved two companies: a car manufacturer and a first-tier supplier.In order to compare the proposed formulations with one another, and with that currently used by the first-tier supplier and is the study object, three parameters were used: safety stock, the number of times stockout occurs and the mean stock.They allowed the final selection of the most suitable SLT formulation for each case study.