ON ALTERNATE OPTIMAL SOLUTION PROCEDURE FOR SOLVING n×2 FLOW-SHOP PROBLEM WITH TRANSPORTATION TIME AND EQUIVALENT JOB-BLOCK

摘要

In the deterministic flow shop scheduling theory, there are several assumptions made to date to fit into the physical conditions of production scheduling problems in Industries. Under one of the assumptions it is assumed that there is no time required to switch over from one machine to a subsequent machine after completion of the operation at the previous machine in flow shop. But there are practical situations which may be observed in industries in the production processes when the machines operating the jobs in successive but distinct stages are set up in different locations so that the output of one machine becomes the input to a subsequent machine and before the job is operated on the subsequent machine it has to experience certain additional times such as loading time, unloading time and the time required to complete the distance between one point of a machine to the other point of a machine in the operation process.