نتایج جستجو برای: cellular manufacturing systems
تعداد نتایج: 1650049 فیلتر نتایج به سال:
Most production environments face random, unexpected events such as machine failure, uncertain processing times, the arrival of new jobs, and cancellation jobs. For reduction undesirable side effects an disruption, initial schedule needs to be reformed partially or entirely. In this paper, a mathematical model is presented address integrated cell formation cellular rescheduling problems in manu...
In manufacturing systems, different types of disturbances influence system’s performance, cellular manufacturing has been proposed as an approach to cope with the uncertainty characteristic of customer driven markets. However, even cellular manufacturing systems are prone to the effects of varying demand patterns. In this study, the effects of some aspects related to demand variation such as th...
In this paper, we present a simulated annealing (SA) and a genetic algorithm (GA) based on heuristics for scheduling problem of jobs in virtual cellular manufacturing systems. A virtual manufacturing cell (VMC) is a group of resources that is dedicated to the manufacturing of a part family. Although this grouping is not reflected in the physical structure of the manufacturing system, but machin...
The converting process from traditional production systems (e.g., Job Shops) to focused (cellular) systems is important as one requirement of global manufacturing to challenge the existing global financial crisis. This represents a big problem and a huge task for manufacturers and academicians which almost most of industrial enterprises around the world are still working as a job shop. This con...
Cellular manufacturing is a useful way to improve overall manufacturing performance. Group technology is used to increase the productivity for manufacturing high quality products and improving the flexibility of manufacturing systems. Cell formation is an important step in group technology. It is used in designing good cellular manufacturing systems. The key step in designing any cellular manuf...
Cellular manufacturing systems are widely used due to their advantageous capability of combining the flexibility job-shop and productivity flow-shop. In recent years, reduction product life cycle, variation in demand products, introduction new technologies, have driven companies improve responsiveness, thus reducing cellular cycle with a focus on re-designing cells. Another issue concerns susta...
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