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دانلود رایکان مقاله انگلیسی ISI با موضوع طراحی سیستم تولید سلولی با توجه به طرح S شکل

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طراحی سیستم تولید سلولی با توجه به طرح S شکل

عنوان انگلیسی مقاله:

Designing cellular manufacturing systems considering S-shaped layout

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6. Conclusions and directions for further research

In this research an integrated bi objective CF and layout problem considering a new layout framework based on shaped layout was presented. In this problem we attempted to minimiz the total material handling cost and maximiz the total similarity between machines. A normalized weighted sum method was proposed to unify these objective functions. Due to computational complexity of the problem, hybrid solution method combining the SA and DP algorithms was developed to solve large sized problems in a reasonable computational time. In the proposed solution method, which is called HSA partial solutions (permutations) representing the layout of machines on the shop floor are created by the SA Then, each permutation is partitioned into machine cells using the DP After setting the HSA parameters, the suggested approach was compared with two recently developed approaches in the literature. In the first section of comparison, we compared the shaped layout with the grid layout presented by Krishnan et al. (2012). Six numerical examples were solved and the solutions were compared with those obtained by Krishnan et al. (2012) In five examples the suggested bi objective problem with shaped layout gave better solutions than Krishnan et al. (2012)’s approach. This comparison also indicated that a special case of the proposed shaped layout is the grid layout (or equivalently QAP). The second section of comparison was carried out between the shaped layout and the multi row layout proposed by Mohammadi and Forghani (2014) ix numerical examples were solved by the HSA and the solutions were compared with Mohammadi and Forghani (2014)’s solutions The results indicated that n five examples the suggested approach gave better solutions than Mohammadi and Forghani (2014)’s approach.