Hierarchical Production Planning and Real-Time Control for Parallel Batch Machines in a Flow Shop with Incompatible Jobs

Table 2

Design of the simulation study.

Factor		Settings
1	Control strategy	PQT: PRS + QSM + TSM
		QT: QSM + TSM
		SF: SMWJ (80%W) + FCFS
		SSF: SMWJ (80%W) + SMWT (1/3PT) + FCFS
2	Number of product types	2, 4 and 6
3	Release time distribution ()	uniform
4	Due-date distribution ()	+ uniform (+)
5	Traffic intensity ()	0.6, 0.7, 0.8, 0.9, 1, 1.1 and 1.2
6	Processing time	Operation in the most upstream of quenching: uniform(1,20) hours
		Quenching (): uniform(10, 25) hours
		Tempering (): uniform(5, 20) hours
7	Subcontracting parameters	Preparation time: 10 hours
		Duration time: 1.2 (+) hours
		Cost:10 /L for the duration time no more than 36 hours
		15 /L for the duration time more than 36 hours
8	Tardiness penalty cost rate	10 uniform(1, 5) /hour
9	Energy cost rate	100 /hour
10	Capacity of furnace	500 L
11	Size of job	Uniform(20, 200) L
12	Number of furnaces (,)	(7, 5)