UNSTABLE FRACTURE OF MILD STEEL PLATE UNDER STRETCHING AND BENDING

On the large structures such as ships's hull, tank structure, etc., various loads are acting. In some structural members, therefore, out-of-plane stress due to bending often may become larger than in-plane stress due to stretching. In this report, the characteristics of brittle fracture initiation of mild steel plate with a through crack under the combined action of stretching and plate bending have been studied both experimentally and theoretically using the linear elastic fracture mechanics (L.E.F.M.). As a result of the investigation, the following conclusions are obtained. (1) Effect of bending load on the characteristics of brittle fracture initiation can be evaluated over a fairly wide range by the criterion proposed by authors using the concept of energy balance based on L.E.F.M. (2) From the results of eccentrically loaded and center-notched Deep Notch Tests, it is extremely safe for design that the maximum surface stress is considered as the equivalent fracture stress at higher temperature than - 180 degrees. (3) The evaluation of fracture phenomena using the equivalent K-value proposed by authors is confirmed to be fairly good for expressing the behavior of the material such as mild steel plate.

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  • Corporate Authors:

    Society of Naval Architects of Japan

    23 Shiba-kotohiracho, Minato-ku
    Tokyo 135,   Japan 

    Society of Naval Architects of Japan

    15-16, Toranomon, 1-chome, Minato-ku
    Tokyo,   Japan 
  • Authors:
    • ANDO, K
    • Yajima, H
    • Hino, T
  • Publication Date: 1974-6

Language

  • Japanese

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00071560
  • Record Type: Publication
  • Source Agency: Society of Naval Architects of Japan
  • Files: TRIS
  • Created Date: Nov 12 1974 12:00AM