Workload control and order release in two-level multi-stage job shops: An assessment by simulation

M. Thurer*, M. Stevenson, C. Silva, M.J. Land, M. Filho

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

16 Citations (Scopus)

Abstract

Most studies on the performance of workload control (WLC) order release methods assume products have simple structures. But, in practice, products are often complex and consist of a number of sub-assemblies that flow through a level 1 job shop before converging on several final assembly operations in a level 2 assembly shop. Evaluating the performance of release methods in this context referred to as the two-level multi-stage job shop is an important step towards improving the alignment between WLC theory and practice. We use simulation to assess the performance of four of the best-performing WLC order release methods. Results suggest that WLC order release has the potential to limit work-in-process (WIP) while reducing the percentage of tardy jobs. It is also important to consider when and where release should be controlled. Results suggest that: (1) orders should be considered for release to level 2 when the first sub-assembly is complete, rather than only when all of the sub-assemblies that make up an assembly order are complete at level 1; and, (2) exercising control at level 2 (with or without control at level 1) leads to a greater reduction in the percentage of tardy jobs than control at level 1 only.

Original languageEnglish
Pages (from-to)869-882
Number of pages14
JournalInternational Journal of Production Research
Volume51
Issue number3
DOIs
Publication statusPublished - 1-Feb-2013

Keywords

  • controlled order release
  • multi-stage job shop
  • workload control (WLC)
  • simulation
  • ORIENTED MANUFACTURING CONTROL
  • CONTROL METHODOLOGY
  • REVIEW/RELEASE
  • PERFORMANCE
  • MANAGEMENT
  • ISSUES
  • RULES

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