Efficiency of delivery by two vehicles in EOQ-models taking into account factors of cargo capacity and rent of storage places
For product supply models related to inventory management, an analysis of the efficiency of the joint use of two vehicles of any type is presented. Analysis considers attributes important for practical applications: 1) factor of cargo capacity of vehicles; 2) the factor of the temporary value of money; 3) the format of payment for storage costs, moreover, in the form of renting the required storage space for the supplied goods. At the same time, to ensure the effectiveness of these joint deliveries by two vehicles of any type, the proposed discounts on the cost of such deliveries are also considered. For any such sets of vehicles to ensure supplies, the corresponding threshold level of the specified discount was found. Such an indicator establishes a necessary and sufficient condition under which combined deliveries (by an appropriate set) will be more efficient than deliveries by any one of these vehicles (including the best in terms of efficiency). Presented numerical illustrations for the relevant decision-making procedures.