Benefits of lot splitting in job-shop scheduling

Authors: Low, Chinyao1; Hsu, Chih-Ming2; Huang, Kai-I3

Source: The International Journal of Advanced Manufacturing Technology, Volume 24, Numbers 9-10, November 2004 , pp. 773-780(8)

Publisher: Springer

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Abstract:

As the lot-streaming concept has been used widely to reduce the makespan in a production system, most research has investigated the flow shop production systems; however, job-shop production systems have received much less attention, relatively. This study more thoroughly investigates the application of lot splitting in a job shop production system with setup times, which cannot be omitted. The objective investigated not only minimises the makespan but also minimises the total production cost, which includes the material handling cost, the setup cost and the inventory cost. A disjunctive graph is first used to describe the addressed scheduling problem, and an integer programming model is then constructed to obtain an optimal solution. In order to investigate the influence of the number of sublots and sublot sizes on a job-shop production system with regard to the corresponding objective considered, some experiments are conducted and results presented as well.

Keywords: Lot splitting; Lot streaming; Makespan

Document Type: Research Article

DOI: http://dx.doi.org/10.1007/s00170-003-1785-9

Affiliations: 1: Department of Industrial Engineering, Da-Yeh University, 112 Shan-Jiau Road, Da-Tsuen, Chang-hua, 515, Taiwan, Email: chinyao@mail.dyu.edu.tw 2: Department of Business Administration, Minghsin University of Science & Technology, Hsinchu, Taiwan, 3: Department of Industrial Engineering, Da-Yeh University, 112 Shan-Jiau Road, Da-Tsuen, Chang-hua, 515, Taiwan,

Publication date: November 1, 2004

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