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Two-echelon supply chain inventory model with variable lead time and ramp-type demand for deterioration item under bi-level credit period

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Listed:
  • Dipak Barman
  • Barun Das

Abstract

Here, a two-echelon supply chain inventory problem consisting of a vendor and a buyer is considered for a deteriorating item. In the system, the buyer receives an opportunity of trade credit from the vendor and simultaneously the buyer offers a credit period to the customers. The buyer's inventory model includes stochastic lead time following a normal distribution and the buyer sells the item to the customer with a more realistic ramp-type demand rate. The vendor produces the goods to maintain the supply to the buyer. The purpose of this study is to minimise the total cost for different sub-cases. The problem is optimised through the soft computing technique namely, genetic algorithm and different types of convexity has been tested here. Finally, this model is discussed with numerical examples.

Suggested Citation

  • Dipak Barman & Barun Das, 2021. "Two-echelon supply chain inventory model with variable lead time and ramp-type demand for deterioration item under bi-level credit period," International Journal of Inventory Research, Inderscience Enterprises Ltd, vol. 6(1), pages 14-46.
    • Handle: RePEc:ids:ijires:v:6:y:2021:i:1:p:14-46
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