Correlations among dynamic stress intensity factor, crack velocity and acceleration in brittle fracture

K. Arakawa, T. Mada, K. Takahashi

    研究成果: ジャーナルへの寄稿学術誌査読

    49 被引用数 (Scopus)

    抄録

    Dynamic fracture in PMMA was studied to determine the correlations among dynamic stress intensity factor KID, crack velocity a and acceleration a. Specimen geometry, a single-edge-cracked tensile plate with two circular holes, was employed to obtain the crack acceleration, deceleration and re-acceleration process in a single fracture event. KID was evaluated using the method of caustics in combination with a Cranz-Schardin high-speed camera and correlated with a and a. The behaviors of KID, a and a in a SEN specimen were also examined, and the following correlations were obtained: (1) KID was an increasing function of a, but their relation was not unique. (2) KID for a constant velocity a was larger when the crack was decelerated than when it was accelerated. (3) KID was dependent on both a and a, and KID for a = constant could be uniquely related to a.

    本文言語英語
    ページ(範囲)311-320
    ページ数10
    ジャーナルInternational Journal of Fracture
    105
    4
    DOI
    出版ステータス出版済み - 2000

    !!!All Science Journal Classification (ASJC) codes

    • 計算力学
    • モデリングとシミュレーション
    • 材料力学

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