Lot Size Decisions in a Three-Level Supply Chain with Freight Rate Discounts

考慮運費折扣下之三階供應鏈批次量決策問題

10.29977/JCIIE.200905.0002

李文義(Wen-Yih Lee)；王勝本(Sheng-Pen Wang)

整合供應鏈 ； 聯合經濟批次量 ； 配送運費折扣 ； integrated supply chain ； joint economic lot size ； freight rate discounts

工業工程學刊

26卷3期（2009 / 05 / 01）

165 - 175

英文

文獻上探討聯合經濟批次量問題，都是在假設運費是和配送量獨立的前提下，決定生產批次量和運送批次量。然而，運費的多寡和配送批次量大小有相關，尤其是當運輸公司提供運費折扣機會，貨主可超額申報貨運量來降低其運送成本時。故運送折扣的影響鉅大，不應被忽略，因有效管理配送量大小可導致較低的供應鏈成本。本研究提出三階供應鏈批次量決策問題並將運費折扣列入數學模型中，其管理意涵亦呈現於內文命題中。案例驗證聯合作批次量決定並將運費折扣列入考量，會比將它們分別規劃而得到較低的總成本。

Previous research on the joint economic lot size (JELS) problem was focused on the decisions of lot sizes and batches delivered among players in the supply chain, assuming that transportation cost was independent of shipment amounts. Nevertheless, the transportation cost accounts for a major part of supply chain cost, especially when transportation companies offer freight rate discount schedules to the supply channel, shippers are able to claim over-declared shipment to lower their transportation costs. The impact of freight rate discount is significant and should not be overlooked. In this article, we address an integrated three-level JELS problem with freight rate discounts. Managerial insights of the model are illustrated in propositions and numerical examples are provided.

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