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Chinese Journal of Management Science ›› 2024, Vol. 32 ›› Issue (12): 130-139.doi: 10.16381/j.cnki.issn1003-207x.2023.1831

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Research of Hot Compression Molding Batch Scheduling for Aerospace Composite Manufacturing with Material External Time Window Constraints

Jingqi Ding1, Naiming Xie1(), Shaoxiang Zheng2   

  1. 1.College of Economics and Management,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China
    2.School of Management and Economics,Kunming University of Science and Technology,Kunming 650504,China
  • Received:2023-11-02 Revised:2024-01-06 Online:2024-12-25 Published:2025-01-02
  • Contact: Naiming Xie E-mail:xienaiming@nuaa.edu.cn

Abstract:

The scheduling problem is investigated in the autoclave operations of aerospace composite material production. The problem stems from the wide application of composites in military and civilian aircraft, which has led to a prominent contradiction between supply and demand. As a bottleneck process in composites production delays occur frequently in autoclave operations. In this study, the production planning and scheduling of autoclave operations is taken as a research perspective, aiming to provide a timely and efficient scheduling program. The current production and processing characteristics of the autoclave operations are first analyzed, describing in detail the limitations on production and processing imposed by the out-time of the prepreg and the two-dimensional spatial characteristics of the workpiece preforms. It is assumed that the out-time of all job prepregs is known. Based on the above analysis and assumptions, the problem is for mulated under consideration as a two-dimensional single-machine batch scheduling with a release time window, with the objective of minimizing the total jobs delay time of the scheduling scheme. A mixed integer programming (MILP) model is developed and effective inequalities are proposed based on the jobs release time window. For small-scale instances of the considered problem, the MILP model can be solved by commercial solvers such as Gurobi to obtain an exact solution. For solving large-scale instances, a genetic algorithm embedded with a maximum delay jobs neighborhood search strategy is developed based on the concept of maximum time-compatible jobs set. In numerical experiments, the results show that the proposed MILP model outperforms the classical integer programming model in terms of solution efficiency, and the added effective inequalities can improve the solution efficiency of the model by 15% on average. The designed genetic algorithm can solve the large-scale arithmetic and the solving quality is significantly better than the classical genetic algorithm. The results of the case study based on the M plant show that the weekly plan scheduling scheme generated by the MILP model can improve the delay situation by up to 74% over the original scheduling scheme. The total delay time of the algorithm's resultant jobs exhibits an incremental trend with the increase in the percentage of short-release time-window jobs in the jobs.

Key words: aerospace composite manufacturing, hot compression molding process, 2D batch machine scheduling, release time window

CLC Number: