Journal of the Korea Society for Simulation (한국시뮬레이션학회논문지)

The Korea Society for Simulation (한국시뮬레이션학회)
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Bullwhip Effect Minimization vs. Cost Minimization in Supply Chain

공급사슬에서 채찍효과 최소화 대 비용 최소화

  • 조면식 (경기대학교 산업경영공학과)
  • Received : 2013.03.22
  • Accepted : 2013.06.10
  • Published : 2013.06.30
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Abstract

Tendency for small changes in end-consumer demand to be amplified as one moves further up the supply chain is known as bullwhip effect (BE). BE is usually defined as variance(order)/variance(demand). Since such distorted information throughout the supply chain can lead to inefficiencies, many studies to reduce variance(order) have been performed. However, in this study, we show that minimization of BE may increase inefficiencies of the supply chain. We introduce a new objective function to increase system efficiency using smoothed ordering policies. Simulation optimization is utilized to find optimal smoothed ordering policies.

하류업체에 발생하는 소비자 수요의 조그만 변화가 상류업체로 올라갈수록 증폭되는 현상을 채찍효과(BE)라 한다. BE는 일반적으로 주문량 분산/수요량 분산으로 정의된다. 이와 같이 왜곡된 정보는 공급사슬의 비효율성을 유발하므로, 주문량의 분산을 줄이는 많은 연구들이 수행되고 있다. 그러나 본 연구에서는 BE를 최소화하는 것이 오히려 공급사슬의 비효율성을 증가시킬 수 있음을 보여 주며, 스무딩된 주문 정책을 사용하여 공급사슬의 효율성를 증가시키기 위한 새로운 목적함수를 설정한다. 최적화된 스무딩 주문정책을 연구하기 위해 시뮬레이션 최적화 기법을 사용한다.

Keywords

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