The value of the shortest loop covering all work centers in a manufacturing facility layout

Abstract

In this study we develop mathematical models to design circular material flow systems. We first develop a tight formulation to find the shortest loop covering all work centers within a manufacturing facility layout. The shortest loop is an attractive solution for most types of conveyors and power-and-free systems, where the length of the flow path is the major driver of the total cost. We develop a primal as well as a dual graph formulation and discuss their one-to-one correspondence in node-edge as well as in connectivity constraints. Our solution times outperform other optimization models available for the facility layout shortest loop design problem. We then approach trip-based material handling, such as automated guided vehicle systems, where the total loaded and empty trip distance is the major driver of the total cost. The problem in these systems evolves into concurrent design of the loop, pickup and dropoff station, and the empty vehicle dispatching policies. On the foundation of the shortest loop model, we propose a decomposition heuristic for design of trip-based flow systems. Computational results indicate that the heuristic provides high quality and robust solutions.

Monarch Butterfly Optimization for Facility Layout Design Based on a Single Loop Material Handling Path

“…As mentioned, the models to find the shortest loop in a given layout were proposed by several studies [23,24,40,41]. In this study, searching for the shortest loop in the layout should proceed in every iteration of the layout design process.…”

Alternatif Perbaikan Tata Letak Lantai Produksi Pt. Japfa Comfeed Indonesia Dengan Metode Systematic Layout Planning (Slp)

“…Namun, diperlukan biaya tambahan ketika pabrik melakukan renovasi pabrik yang disesuaikan dengan layout alternatif terpilih hal ini dikarenakan bahwa biaya yang dikeluarkan seperti biaya fixed cost, variabel cost, overhead dan upah tenaga kerja cenderung sama waaupun ada selisih biaya tidak akan terlalu jauh. Karena layout alternatif terpilih berfungsi atau dilakukan agar produktivitas pabrik dapat meningkat namun dengan tanpa terjadi penambahan biaya produksi serta mengurangi material handling dan backtracking sehingga pabrik dapat bekerja lebih efektif dan efisien (Vaziri and Ortiz, 2008). Analisa Layout yang Pertama Layout pertama merupakan relayout berdasarkan hasil pengolahan ARC dan ARD.…”