Tailoring Material Scatter for Metal Forming Processes based on Inverse Robust Optimization

Omid Nejadseyfi*, Bert Geijselaers, Antonius H. van den Boogaard

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review


    Robust optimization is a powerful method to find the parameters for a process at which its output is least sensitive to the variation of the input parameters. In this method, measured or estimated noise parameters are used to estimate the scatter of the output. At the optimum design, the variation in noise parameters leads to a minimum scatter of the output. If this minimum scatter of the output does not meet the specified tolerance, then the input noise must be adjusted accordingly. This means for example that materials with a tighter specification must be ordered, which usually incurs additional costs. In this article, an inverse method is presented to tailor the variation of noise parameters based on the allowable tolerance in the output. This method is successfully applied to a non-linear process, lab-type B-pillar part. The results show how to adjust the input noise parameters at a minimum cost to meet the required output tolerance.
    Original languageEnglish
    Title of host publicationProceedings of the 22nd International ESAFORM Conference on Material Forming, ESAFORM 2019
    EditorsPedro Arrazola, Eneko Saenz de Argandona, Nagore Otegi, Joseba Mendiguren, Mikel Saez de Buruaga, Aitor Madariaga, Lander Galdos
    PublisherAmerican Institute of Physics
    Number of pages6
    ISBN (Electronic)9780735418479
    ISBN (Print)978-0-7354-1847-9
    Publication statusPublished - 2 Jul 2019
    Event22nd International Conference on Material Forming 2019 - Votoria-Gasteiz, Spain
    Duration: 8 May 201910 May 2019
    Conference number: 22

    Publication series

    NameAIP Conference Proceedings
    ISSN (Print)0094-243X
    ISSN (Electronic)1551-7616


    Conference22nd International Conference on Material Forming 2019
    Abbreviated titleESAFORM 2019
    Internet address


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