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Manufacturing-remanufacturing policies for a centralized two stage supply chain under consignment stock partnership
سیاست های تولید و بازسازی برای یک زنجیره تامین دو مرحله ای متمرکز تحت مشارکت سهام شرکت های حمل و نقل-2017 This paper addresses a centralized closed loop supply chain comprised of a single vendor and a single
buyer operating under a consignment stock (CS) strategy. Following this sort of partnership, the buyer
agrees to store the product at its premises where, in return, the payment of those products is made only
after being sold to the end customer. We develop a mixed integer non-linear program that seeks to
minimize the chain-wide total cost by jointly optimizing the length of the production cycle, the number
and the sequence of the newly manufactured and the remanufactured batches, as well as the inventory
levels of the finished and recovered products at the beginning of the cycle. The special case of the
production sequence (R,M), in which R consecutive remanufacturing batches are produced first followed
by M manufacturing batches, along with the production sequences (M,R), (R,1), and (1,M) are also derived
from the general model. Extensive numerical experiments are also conducted in order to assess the
impact of key problem parameters on the behavior of the developed models. The results confirm that,
under the consignment stock agreement, the (R,M) and (M,R) production sequences are the dominant
ones as they yield the optimal solution in roughly 87% and 10% of the reported problem instances, re
spectively. It is also found that intermittent schedules, in which the vendor alternates between the
production of newly and remanufactured batches more than once, would only result in marginal savings
under extreme values of the setup costs. In contrast to the reported results in the literature, the sim
plified cases of (R,1) and (1,M) did not perform well under several settings of the problem parameters
with an average increase in the total cost as high as 19% and 25%, respectively.
Keywords: Supply chain management | Integrated vendor-buyer | Consignment stock | Remanufacturing |
مقاله انگلیسی |