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CONSIDERATION IN THE FRACTURE OF AN INHOMOGENEOUS MATERIALS WITH PRE-EXISTING CRACKS AND MATERIAL FAULTS.

Research Project

Project/Area Number 08650541
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 土木材料・力学一般
Research InstitutionTOKUYAMA COLLEGE OF TECHNOLOGY

Principal Investigator

HASHIMOTO Ken-ichi  CIVIL ENGINEERING AND ARCHITECTURE,ASSOCIATE PROFESSOR, 土木建築工学科, 助教授 (00132647)

Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1997: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1996: ¥1,300,000 (Direct Cost: ¥1,300,000)
Keywordsinhomogeneous materials / fracture mechanics / E-integral / crack interaction / void interaction / crack extension / crack kinking / fracture toughness / エネルギ解放率 / 干渉き裂 / 界面問題
Research Abstract

The important knowlege in relation to the properties for an extension behavior of fracture cracks in an inhomogeneous materials is found out in this research. The inhomogeneous material models have some interacting cracks and voids near the main crack tip and further the interface cracks of an inclusion are treated as the main crack. The extension behavior of a fracture crack is investigated numerically and experimentally. The main results are enumerated followings.
1. The phenomenom that it is easy or difficult for a fracture crack to grow on account of the direction of the anisotropic axis, is shown as the property of a crack extension in the anisotropic elastic bady.
2. Both of the interruption effect and assistant effect for the crack extension exist because of the positioning relation between crack and crack or crack and void.
3. In the case that the interacting crack and void exist asymmetrically with respect to the main crack, crack kinkng phenomenom take place certainly.
4. The crack extension behavior of the interface crack is complicated and the distribution of energy release rate has the discontinuity.
5. E-integral is more effective than J-integral for the inhomogeneous model treating in this research.
Other many valid results are obtain. These results become important datum for the fracture of the inhomogeneous materials.

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] 橋本 堅一: "混合モード荷重下にある異方弾性体内き裂のエネルギの解放率の数値解析" 材料. 46巻・8号. 976-980 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 橋本 堅一: "空隙の干渉を受ける破壊き裂進展挙動に関する研究" 破壊力学シンポジウム論文集. 9巻. 162-166 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Ken-ichi HASHIMOTO: "Numerical Consideration of Path Independency for J-integral and E-integral" Research Reports of The Tokuyama College of Technology. No.21. 15-20 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 橋本 堅一: "材料介在物の界面き裂の進展挙動に関する研究" 徳山高専研究紀要. 21号. 21-25 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Chikayoshi YATOMI: "On the energy release rate by the path-independent E-integral and J-integral for guasi-static crack growth" Theoretical Studies on Fracture Mechanics in Japan. 87-98 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 橋本 堅一: "き裂干渉問題におけるき裂進展挙動の基礎的研究" 構造工学論文集. 44巻A(印刷中). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Ken-ichi HASHIMOTO: "Numerical Analysis for the Energy Rerease Rate of Crack in Anisotropic Body under Combined Loading" Journal of The Society of Material Science. Vol.46, No.8. 976-980 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Ken-ichi HASHIMOTO: "On the extension behavior of a crack interacting with a void" Proceedings of The 9th Symposium on Fracture and Fracture Mechanics. 162-166 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Ken-ichi HASHIMOTO: "Numerical Consideration of Path Independency for J-integral and E-integral" Research Reports of The Tokuyama College of Technology. No.21. 15-20 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Ken-ichi HASHIMOTO: "On The Extension Behabior of Material Interface Crack along an Inclusion" Research Reports of The Tokuyama College of Technology. No.21. 21-25 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Chikayoshi YATOMI: "On the energy release rate by the path-independent E-integral and J-integral for quasi-static crack growth" Theoretical Studies on Fracture Mechanics in Japsn. 87-98 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Ken-ichi HASHIMOTO: "On the extension behabior of the fracture crack for crack-crack intraction problems" Journal of Stractural Engineering. Vol.44A(in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 橋本堅一: "混合モード荷重下にある異方弾性体内き裂のエネルギ 解放率の数値解析" 材料. 46巻・8号. 976-980 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 橋本堅一: "空隙の干渉を受ける破壊き裂の進展挙動に関する研究" 破壊力学シンポジウム 論文集. 9巻. 162-166 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Ken-ichi HASHIMOTO: "Numerical Consideration of Path Independency for J-integral and E-integral" Research Reports of The Tokuyama College of Technology. No.21. 15-20 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 橋本堅一: "材料介在物の界面き裂の進展挙動に関する研究" 徳山高専研究紀要. 21号. 21-25 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Chikayoshi YATOMI: "On the energy reliase rate by the poth-independent E-integral and I-integral for guasi-static crack grouth" Theuretical studies on Fracture Mechanics in Japan. 87-98 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 橋本堅一: "き裂干渉問題におけるき裂進展挙動の基礎的研究" 構造工学論文集. (印刷中)44巻A. (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 橋本堅一: "混合モード荷重下にある異方弾性体内のき裂のエネルギ解放率の数値解析" 材料. (1998)

    • Related Report
      1996 Annual Research Report
  • [Publications] 橋本堅一: "き裂干渉問題における破壊き裂進展挙動の実験的検討" 平成9年度土木学会中国支部研究発表概要集. 49巻. (1997)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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