A verification of the thermal stress analysis, including the furan sand mold, used to predict the thermal stress in castings

Yuichi Motoyama, Yuki Inoue, Gota Saito, Makoto Yoshida

    Research output: Contribution to journalArticle

    13 Citations (Scopus)

    Abstract

    The restraint exerted on a casting by a furan sand mold on the casting and the contraction of the casting during cooling was dynamically and simultaneously measured using a device that we developed. The measurements were compared during cooling with thermal stress analyses. The thermal stress analyses were based on the representative mechanical models for the furan sand mold, i.e., the elastic and elasto-plastic models used in previous studies. The comparison demonstrated that the elasto-plastic model simulates the restraint force more accurately than the elastic model. In the thermal stress analysis, it was important to describe the development of inelastic deformation and the fracture of the sand mold. However, the simulated restraint force was still twice as large as the measured force even in the elasto-plastic model. This error is most likely attributable to using the temperature-independent mechanical properties of the furan sand mold and the mechanical model of the casting alloy, which neglected the viscoplasticity at high temperature in the thermal stress analysis.

    Original languageEnglish
    Pages (from-to)2270-2277
    Number of pages8
    JournalJournal of Materials Processing Technology
    Volume213
    Issue number12
    DOIs
    Publication statusPublished - 2013

    Fingerprint

    Thermal Analysis
    Thermal Stress
    Stress Analysis
    Casting
    Stress analysis
    Thermal stress
    Sand
    Predict
    Elasto-plastic
    Plastics
    Cooling
    Model
    Viscoplasticity
    Mechanical Properties
    furan
    Castings
    Contraction
    Likely
    Mechanical properties
    Temperature

    Keywords

    • Aluminum alloy
    • CAE
    • Distortion
    • Residual stress
    • Sand casting
    • Sand mold

    ASJC Scopus subject areas

    • Computer Science Applications
    • Modelling and Simulation
    • Ceramics and Composites
    • Metals and Alloys
    • Industrial and Manufacturing Engineering

    Cite this

    A verification of the thermal stress analysis, including the furan sand mold, used to predict the thermal stress in castings. / Motoyama, Yuichi; Inoue, Yuki; Saito, Gota; Yoshida, Makoto.

    In: Journal of Materials Processing Technology, Vol. 213, No. 12, 2013, p. 2270-2277.

    Research output: Contribution to journalArticle

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