HYBRID ANALTYIC SIMULATION APPROACH FOR PRODUCTION PLANNING PROBLEM WITHIN SUPPLY CHAIN NETWORK)

Year 2011, Volume: 13 Issue: 3, 63 - 77, 01.09.2011

Bilge Bilgen Cansu Pınar Diksirek

Abstract

As the industrial environment becomes more competitive, supply chain management (SCM) has
received much more attention in the literature. The supply chain (SC) can be defined as an integrated
structure involving the procurement, production, storage, distribution and control of goods. This
paper addresses the procurement and production planning problem in a supply chain system that
involves the supply of various components from a set of suppliers and production of end products
within the plant. A linear programming model is proposed to describe the problem, where multiple
components can be assembled within a planning horizon. Due to stochastic factors such as unexpected
delays, queuing and machine failure, operation time provided by mathematical model cannot reflect
dynamic characteristic of realworld systems and optimal solution of mathematical model is not
acceptable in practice. Therefore, to explore the behaviour of the real-world system, a hybrid
mathematical-simulation approach is proposed. The applicability and flexibility of the proposed model
and approach are illustrated through an example problem.

Keywords

Production planning, Linear programming, Simulation, Hybrid approach

TEDARİK ZİNCİRİ AĞI İÇERİSİNDE ÜRETİM PLANLAMA PROBLEMİ İÇİN MELEZ ANALİTİK/BENZETİM ÇÖZÜM YAKLAŞIMI

Abstract

Endüstriyel rekabet arttıkça tedarik zinciri yönetimi literatürde daha fazla önem kazanmaktadır.
Tedarik zinciri yönetimi ürünlerin tedariği, üretilmesi, depolanması, dağıtımı ve kontrolünü içeren
bütünleşik bir yapıdır. Bu makalede tedarikçilerden çeşitli bileşenlerin tedarik edildiği ve fabrikada
nihai ürün üretiminin yapıldığı bir tedarik zinciri sisteminde tedarik ve üretim planlama problemi ele
alınmıştır. Planlama periyodu boyunca bileşenlerin montajının yapıldığı problem için doğrusal bir
matematiksel model geliştirilmiştir. Beklenmedik gecikmeler, makine bozulmaları, makine çalışma
süreleri gibi bazı stokastik faktörlerden dolayı matematiksel modeller gerçek sistemlerin dinamik
karakteristiklerini temsil edemezler. Bu nedenle, gerçek sistemin davranışını ortaya çıkarmak üzere
melez bir matematiksel programlama/benzetim modeli önerilmiştir. Model ve yaklaşımın
uygulanabilirliği bir örnek problem üzerinde gösterilmiştir.

Keywords

Üretim planlama, Doğrusal programlama, Benzetim, Melez yaklaşım

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