Extrusion of non-symmetric T-shaped sections, an analysis and some experiments

N. R. Chitkara, Kemal Celik

    Research output: Contribution to journalArticle

    Abstract

    In the present study, previously developed analytical approach (Int. J. Mech. Sci. 42 (2000) 273), based on the upper-bound theory, for the design of three-dimensional off-centric extrusion of arbitrarily shaped dies was applied to the extrusion of T-shaped sections from initially round billets with the experimental verifications. Here, non-symmetric T-shaped sections as well as symmetric ones were considered. A computer program was written to obtain optimum die design which yield the lowest upper-bound for a given reduction in area, die length, its off-centric positioning and the frictional conditions. Computations were carried out both for the converging (ruled-surface) and the smooth curved (advanced-surface) dies. Curvature of the extruded product and simulated deforming grid pattern were also predicted. A sophisticated CAD/CAM package was used in conjunction with the CNC and EDM processes to manufacture the streamlined dies for the extrusion of T-shaped sections. The theoretical predictions were observed to be in good agreement with the experimental results.

    Original languageEnglish (US)
    Pages (from-to)2961-2987
    Number of pages27
    JournalInternational Journal of Mechanical Sciences
    Volume43
    Issue number12
    DOIs
    StatePublished - Dec 1 2001

    Fingerprint

    Extrusion
    Experiments
    computer aided manufacturing
    billets
    Computer aided manufacturing
    computer aided design
    positioning
    Computer program listings
    Computer aided design
    grids
    curvature
    computer programs
    products
    predictions

    Keywords

    • Analysis
    • Experiments
    • Non-symmetric T-shaped section
    • Three-dimensional off-centric extrusion

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

    Cite this

    Extrusion of non-symmetric T-shaped sections, an analysis and some experiments. / Chitkara, N. R.; Celik, Kemal.

    In: International Journal of Mechanical Sciences, Vol. 43, No. 12, 01.12.2001, p. 2961-2987.

    Research output: Contribution to journalArticle

    @article{93d9ad132b1b478db650961bbf1adb6a,
    title = "Extrusion of non-symmetric T-shaped sections, an analysis and some experiments",
    abstract = "In the present study, previously developed analytical approach (Int. J. Mech. Sci. 42 (2000) 273), based on the upper-bound theory, for the design of three-dimensional off-centric extrusion of arbitrarily shaped dies was applied to the extrusion of T-shaped sections from initially round billets with the experimental verifications. Here, non-symmetric T-shaped sections as well as symmetric ones were considered. A computer program was written to obtain optimum die design which yield the lowest upper-bound for a given reduction in area, die length, its off-centric positioning and the frictional conditions. Computations were carried out both for the converging (ruled-surface) and the smooth curved (advanced-surface) dies. Curvature of the extruded product and simulated deforming grid pattern were also predicted. A sophisticated CAD/CAM package was used in conjunction with the CNC and EDM processes to manufacture the streamlined dies for the extrusion of T-shaped sections. The theoretical predictions were observed to be in good agreement with the experimental results.",
    keywords = "Analysis, Experiments, Non-symmetric T-shaped section, Three-dimensional off-centric extrusion",
    author = "Chitkara, {N. R.} and Kemal Celik",
    year = "2001",
    month = "12",
    day = "1",
    doi = "10.1016/S0020-7403(01)00044-3",
    language = "English (US)",
    volume = "43",
    pages = "2961--2987",
    journal = "International Journal of Mechanical Sciences",
    issn = "0020-7403",
    publisher = "Elsevier Limited",
    number = "12",

    }

    TY - JOUR

    T1 - Extrusion of non-symmetric T-shaped sections, an analysis and some experiments

    AU - Chitkara, N. R.

    AU - Celik, Kemal

    PY - 2001/12/1

    Y1 - 2001/12/1

    N2 - In the present study, previously developed analytical approach (Int. J. Mech. Sci. 42 (2000) 273), based on the upper-bound theory, for the design of three-dimensional off-centric extrusion of arbitrarily shaped dies was applied to the extrusion of T-shaped sections from initially round billets with the experimental verifications. Here, non-symmetric T-shaped sections as well as symmetric ones were considered. A computer program was written to obtain optimum die design which yield the lowest upper-bound for a given reduction in area, die length, its off-centric positioning and the frictional conditions. Computations were carried out both for the converging (ruled-surface) and the smooth curved (advanced-surface) dies. Curvature of the extruded product and simulated deforming grid pattern were also predicted. A sophisticated CAD/CAM package was used in conjunction with the CNC and EDM processes to manufacture the streamlined dies for the extrusion of T-shaped sections. The theoretical predictions were observed to be in good agreement with the experimental results.

    AB - In the present study, previously developed analytical approach (Int. J. Mech. Sci. 42 (2000) 273), based on the upper-bound theory, for the design of three-dimensional off-centric extrusion of arbitrarily shaped dies was applied to the extrusion of T-shaped sections from initially round billets with the experimental verifications. Here, non-symmetric T-shaped sections as well as symmetric ones were considered. A computer program was written to obtain optimum die design which yield the lowest upper-bound for a given reduction in area, die length, its off-centric positioning and the frictional conditions. Computations were carried out both for the converging (ruled-surface) and the smooth curved (advanced-surface) dies. Curvature of the extruded product and simulated deforming grid pattern were also predicted. A sophisticated CAD/CAM package was used in conjunction with the CNC and EDM processes to manufacture the streamlined dies for the extrusion of T-shaped sections. The theoretical predictions were observed to be in good agreement with the experimental results.

    KW - Analysis

    KW - Experiments

    KW - Non-symmetric T-shaped section

    KW - Three-dimensional off-centric extrusion

    UR - http://www.scopus.com/inward/record.url?scp=0035545763&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=0035545763&partnerID=8YFLogxK

    U2 - 10.1016/S0020-7403(01)00044-3

    DO - 10.1016/S0020-7403(01)00044-3

    M3 - Article

    VL - 43

    SP - 2961

    EP - 2987

    JO - International Journal of Mechanical Sciences

    JF - International Journal of Mechanical Sciences

    SN - 0020-7403

    IS - 12

    ER -