Analysis of a linear walking worker line using a combination of computer simulation and mathematical modeling approaches

Wang, Qian; Lassalle, S; Mileham, A R; Owen, Geraint

doi:10.1016/j.jmsy.2009.12.001

Cited by 38 publications

(33 citation statements)

References 19 publications

(19 reference statements)

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“…Simulation results of previous research (Lassalle et al 2007, Wang et al 2009) indicated that the blocking rates and in-process waiting times can, alternatively, be reduced by having more workstations than walking workers on the line. But these results were obtained based on the assumption that the work content at workstations of the line can be divisible.…”

Section: Variable (C) -Number Of Workersmentioning

confidence: 87%

“…Mathematical modelling Summarised the advantages and shortcomings of applications of WWAL on a short section on a semi-automated automotive engine assembly line Wang et al (2009) A combination of computer simulation and mathematical analysis Evaluated in-progress waiting time due to bottlenecks (e.g. machines with the longest processing time or a walking worker with variable performance) that affects the overall system performance International Journal of Computer Integrated Manufacturing 543…”

Section: )mentioning

confidence: 99%

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Prediction and analysis impact of operational design of a manual assembly system with walking workers on performance

Al‐Zuheri

Luong

Xing

2013

International Journal of Computer Integrated Manufacturing

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Manual assembly lines, with workers travelling with the work along the line to perform all required tasks, are an example of assembly systems which have greater flexibility over traditional systems due to an improved response to product demand variability. Implementing assembly systems in this way is difficult, especially when operational design reflects an incomplete understanding of how workers can best perform within the system. Different operational designs for such systems have a profound impact on the performance of the system in terms of productivity and ergonomics. This paper analyses the performance of walking worker assembly line (WWAL) in different operational designs. A mathematical model was developed, which considers the effects of a number of operational design variables. An industrial case study is presented here to demonstrate the effectiveness of the proposed model. The results indicate that WWAL can be designed to improve performance, flexibility and labour costs by approaching productivity and ergonomics collaboratively. The results obtained by the model prediction were compared with computer simulation results. Comparison validated the accuracy of the proposed model. The model provides partial characterisations of the optimal design of WWAL and can be used to develop heuristics for local or global optimisation.

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Section: Variable (C) -Number Of Workersmentioning

confidence: 87%

Section: )mentioning

confidence: 99%

Prediction and analysis impact of operational design of a manual assembly system with walking workers on performance

Al‐Zuheri

Luong

Xing

2013

International Journal of Computer Integrated Manufacturing

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“…Lean manufacturing can be defined as "a systematic approach to eliminate non-value added wastes in various forms and it enables continuous improvement" [4]. These wastes are waiting for parts to arrive, overproduction, unnecessary movement of materials, unnecessary inventory, excess motion, the waste in processing and the waste of rework [5]. Nevertheless, traditional lean manufacturing method does not consider environmental wastes of such as energy and CO2 emissions which also need to be addressed as these wastes add no values on manufactured products [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…These wastes are waiting for parts to arrive, overproduction, unnecessary movement of materials, unnecessary inventory, excess motion, the waste in processing and the waste of rework [5]. Nevertheless, traditional lean manufacturing method does not consider environmental wastes of such as energy and CO2 emissions which also need to be addressed as these wastes add no values on manufactured products [4,5]. Consequently, it is important to develop the lean manufacturing system design towards the sustainability incorporating the economic and ecological constraints.…”

Section: Introductionmentioning

confidence: 99%

Towards a sustainable manufacturing system design: A multi-objective optimization model

Nujoom

Wang

Mohammed

2017

2017 23rd International Conference on Automation and Computing (ICAC)

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Developments of sustainable manufacturing systems are considered as one of effective solutions to minimize the environmental impact. Design of a sustainable manufacturing system can be partially achieved through the implementation of lean methods to reduce manufacturing wastes and operational costs, and increase the system efficiency and productivity. However, the lean approach does not include environmental wastes in such as energy consumption and CO2 emissions when designing a lean manufacturing system. This paper addresses these issues by evaluating a sustainable manufacturing system design considering energy consumption, CO2 emissions and the total cost using the multi-objective approach. To this aim, a multi-objective mathematical model was developed under economic and ecological constraints in terms of minimization of the total cost, energy consumption and CO2 emissions associated with the number of machines involved in each process in conjunction with a quantity of material flow for processing these products in a manufacturing system. A real case study was used for examining the validation and applicability of the developed sustainable manufacturing system model.

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“…Lean manufacturing is a systematic approach to eliminate non-value added wastes in various forms and it enables continuous improvement [7]. These wastes are overproduction, waiting for parts to arrive, unnecessary movement of materials, the waste in processing, unnecessary inventory, excess motion and the waste of rework [8]. However, traditional lean manufacturing does not consider environmental wastes which also need to be identified as these wastes add no values on manufactured products.…”

Section: Introductionmentioning

confidence: 99%

An Integrated Method for Sustainable Manufacturing Systems Design

2016

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Abstract. In the past decade, there has been an increasing awareness in development of sustainable manufacturing systems as governments in many countries have been enforcing ever-stricter environmental policies and regulations in industry by promoting energy saving and low emissions manufacturing activities. Lean manufacturing can be helpful for achieving a sustainable manufacturing system as it can reduce production wastes and increase manufacturing efficiency. Nevertheless, this lean approach does not include a consideration in energy consumption and carbon dioxide (CO2) emissions when designing a lean manufacturing system. This paper presents a methodology which can be useful for measuring energy consumption and CO2 emissions for a typical manufacturing system design at an early stage. A case study was carried out for obtaining computational results using the developed methodology based on data collected from a real production line.

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Analysis of a linear walking worker line using a combination of computer simulation and mathematical modeling approaches

Cited by 38 publications

References 19 publications

Prediction and analysis impact of operational design of a manual assembly system with walking workers on performance

Prediction and analysis impact of operational design of a manual assembly system with walking workers on performance

Towards a sustainable manufacturing system design: A multi-objective optimization model

An Integrated Method for Sustainable Manufacturing Systems Design

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