Accession Number:

ADA273922

Title:

Scheduling a Medium-Sized Manufacturing Shop: A Simulation Study

Descriptive Note:

Master's thesis,

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF LOGISTICS AND ACQUISITION MANAGEMENT

Personal Author(s):

Report Date:

1993-09-01

Pagination or Media Count:

209.0

Abstract:

This study examined the application of simple-to-use, low cost scheduling methods to the operating environment of a medium-sized manufacturing shop. Computer simulation was used to evaluate eighteen different scheduling algorithms, each the result of the combination of a loading and a sequencing rule due date setting was not considered since due dates are exogenously set. The loading rules investigated were Minimum Machine Required, Lowest Average WIP, and Lowest Average Aggregate Priority Level. The sequencing rules investigated were Priority, EDD, FIS, SPT, Slack, and Slack Ratio. The scheduling algorithms were evaluated against performance measures of mean tardiness, mean flowtime, mean percentage of late jobs, and mean priority penalty. A repeated measures experimental design was used to evaluate each algorithm. Analysis of the results was accomplished using both two-factor ANOVA and Tukey all-pairwise multiple comparisons. This study produced results consistent with prior research in that it showed that with respect to shop performance, the choice of sequencing rule becomes less important as flexibility within the shop increases. The author concluded that for the operating environment of the manufacturing shop studied, the flexibility introduced into the shop by the selection of loading rule was the most significant factor in improving overall shop performance. Scheduling, Job shop, Simulation, Production planning, Models

Subject Categories:

  • Computer Programming and Software
  • Manufacturing and Industrial Engineering and Control of Production Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE