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In this paper, performance measures such as mean flow time and work-inprocess inventories will be used to determine the changes in the performance of a cellular manufacturing system due to product mix variations.

Abstract--In this paper, a simple dynamic part assignment (DPA) procedure is introduced and its effects o n the performance of cellular manufacturing systems is evaluated. In this procedure rerouting of parts among machine ceUs is allowed for better machine utilization. Three data sets are used to compare the performance of manufacturing systems under job shop and cellular manufacturing when DPA is employed. The results of simulation runs indicate that the proposed DPA method improves the performance of cellular manufacturing significantly by reducing the congestion in machine cells with long waiting lines.

Dynamic Part Assignment (DPA) Procedure A major contributing factor to the under utilization of machines in cellular manufacturing is the development of long queues in front of some machines in machine cells. This paper presents a procedure which identifies such machines and redistributes their loads to alternative machines whenever feasible.