Rebalancing the assembly lines: exact solution approaches

2017-01-01
Sanci, Ece
Azizoğlu, Meral
In this study, we consider an assembly line rebalancing problem with disruptions caused by workstation breakdowns or shutdowns. After the disruption, we aim to find a rebalance so as to catch the trade-off between the efficiency measure of cycle time and stability measure of number of tasks assigned to different workstations in the original and new balances. Our aim is to generate all nondominated objective vectors with respect to the efficiency and stability measures. We develop two optimisation algorithms: a Mixed Integer Linear Programming-based algorithm and a Branch and Bound algorithm. The results of our experiments have shown the favourable performances of both algorithms and the superiority of the Branch and Bound algorithm.
INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH

Suggestions

Rebalancing of assembly lines
Sancı, Ece; Azizoğlu, Meral; Department of Industrial Engineering (2015)
In this study, we consider an assembly line rebalancing problem. We assume that there is a disruption on one or more workstations that makes the current solution infeasible. After the disruption, we aim to find a rebalance so as to catch the trade-off between the efficiency measure of cycle time and the stability measure of number of tasks assigned to different workstations in the original and new solutions. We generate all nondominated objective vectors with respect to our efficiency and stability measures...
Rebalancing in assembly lines
Girit, Utku; Azizoğlu, Meral; Department of Industrial Engineering (2019)
Assembly line balancing is an important and well recognized operations research problem. The current balancing might not stay optimal for a long time due to the changing conditions. The changing conditions, like disruptions in one or more workstations, may cause some inefficiencies, even infeasibilities, for the current balance. In this study, after the disruption, we aim to rebalance the assembly line by considering the trade-off between workload balancing (efficiency measure) and total displacement amount...
Workload smoothing in simple assembly line balancing
Azizoğlu, Meral (2018-01-01)
This paper considers a simple assembly line balancing problem with fixed number of workstations and prespecified cycle time. Our objective is to minimize the sum of the squared deviations of the workstation loads around the cycle time, hence maintain workload smoothing. We develop several optimality properties and bounding mechanisms, and use them in our branch and bound algorithm. The results of our computational study reveal that our branch and bound algorithm is capable of solving medium sized problem in...
An adaptive simulated annealing algorithm-based approach for assembly line balancing and a real-life case study
Guden, H.; Meral, Fatma Sedef (2016-05-01)
In this study, we address the deterministic assembly line balancing problem (ALBP) in a multiple product-models environment with multiple objectives. We have been motivated by the assembly line balancing problem of a white goods product production line that is a multi-model type line with 68 stations through which four product-models are assembled, each with approximately 400 precedence relations and 300 tasks. In the plant, to cope with the increasing demand in the medium term, the efficiency of the line i...
A disassembly line balancing problem with fixed number of workstations
Kalaycilar, Eda Goksoy; Azizoğlu, Meral; Yeralan, Sencer (2016-03-01)
In this study, a Disassembly Line Balancing Problem with a fixed number of workstations is considered. The product to be disassembled comprises various components, which are referred to as its parts. There is a specified finite supply of the product to be disassembled and specified minimum release quantities (possible zero) for each part of the product. All units of the product are identical, however different parts can be released from different units of the product. There is a finite number of identical w...
Citation Formats
E. Sanci and M. Azizoğlu, “Rebalancing the assembly lines: exact solution approaches,” INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH, pp. 5991–6010, 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/44145.