Sensitivity Analysis of Simulation Study Results on Safety Stock Relaxation in Material Requirement Planning

摘要

In Material Requirement Planning, the lack of capacity constraints can lead to production plans, which cannot be fulfilled on time. One countermeasure for coping with capacity problems is a temporary relaxation of safety stock, which can be implemented in different ways. In this paper, three variants for relaxing safety stock are presented and compared in a simulation study for a simple manufacturing structure. All three methods reveal a significant potential of improvement in comparison to MRP. In a sensitivity analysis, the influence of two MRP planning parameters, i.e., safety stock and production lot size, on the overall costs and the relationship between these two parameters are examined.