A simulation study on performance improvement of group technology cells

SUMMARY

The response of several existing group technology cells in a periodic simultaneous multi-batch input environment was obtained with intra-cell batch split and transfer. A comprehensive deterministic computer simulation program was used to model the cells. Within the logic of the program a post-operation transfer quantity termed a 'sub-batch1 was specified for each operation of individual components.

Relevant performance criteria including a setting time penalty were defined and experiments were performed with various values of the transfer quantity. It was found that the performance of group technology cells can be improved through sub-batch work transfer, while the extent of such improvements are extremely case dependent even for cells operating side by side and subject to the same general controlling and constraining influences. In this context the role of simulation as a tool for system analysis was also demonstrated.