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Basic Studies on Dynamic Interfacial Fracture Mechanics

Research Project

Project/Area Number 08455063
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Materials/Mechanics of materials
Research InstitutionKobe University of Mercantile Marine

Principal Investigator

NISHIOKA Toshihisa  Kobe University of Mercantile Marine, Department of Ocean Mechanicsal Engineering, Professor, 商船学部, 教授 (60018067)

Project Period (FY) 1996 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥6,800,000 (Direct Cost: ¥6,800,000)
Fiscal Year 1998: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1997: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1996: ¥4,400,000 (Direct Cost: ¥4,400,000)
KeywordsSeparated Dynamic J Integral / Separated Energy Release Rate / Path Independent Integral / Moving Finite Element Method / Intersonic Interfacial Fracture / Fracture Path Numerical Prediction / Application Phase Simulation / Interfacial Crack Impact Response / 動的J積分 / 動的破壊力学 / 界面き裂 / 衝撃破壊 / 動的き裂伝播 / 有限要素法シミュレーション / コースティックス法 / コースティック法
Research Abstract

In this research project, dynamic interfacial fracture phenomena were investigated by using experimental, theoretical and computational mechanics approaches in a unified fashion. Through these investigations, fundamental information and data on dynamic interfacial fracture mechanics were acquired. Furthermore, some mechanisms of -dynamic interfacial fracture phenomena were clarified. The major research results of this project are listed as follows :
1. Experimental Studies :
(1) Evaluations of interfacial fracture toughness and separated energy release rates,
(2) Developments of the concept of equivalent residual force and the evaluation method of residual stress intensity factor,
(3) Finding of the differences in crack velocities of interfacial dynamic fracture phenomena under static and impact loads,
(4) Finding of the possibility of intersonic crack velocity in dynamic interfacial fracture.
2. Theoretical Studies :
(1) Creation of the concepts of path independent separated T* integral, pat … More h independent separated dynamic J integral, path independent separated J integral, and separated energy release rate,
(2) Derivation of the relations between the separated dynamic J integrals and stress intensity factors,
(3) Clarification of the mechanisms of energy flow to propagating interfacial cracks under tension-dominant type and shear-dominant type loads,
(4) Clarification of the mechanism of fracture energy supplies to a propagating interfacial crack tip from both sides of bimaterial.
3. Computational Mechanics Studies :
(1) Developments of moving finite element methods for dynamic interfacial crack propagation,
(2) Success of numerical simulations of intersonic and supersonic interfacial crack propagation,
(3) Evaluation of energy release rate for intersonically and supersonically propagating cracks, using the dynamic J integral,
(4) Visualization of Mach shock waves emanated from intersonically and supersonically propagating crack tips,
(5) Clarification of impact responses of separated energy release rates for interfacial cracks,
(6) Development of moving finite element method based on delaunay automatic mesh generation,
(7) Success of numerical prediction of dynamic fracture path using mixed-phase simulation with fracture path prediction mode,
(8) Developments of schemes for application phase simulation of non-straight fracture phenomena.
Since the above research results include many important items such as the concept of the separated dynamic J integral, the outcomes of this research project can be expected to contribute to the establishment of dynamic interfacial fracture mechanics. Less

Report

(4 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • 1996 Annual Research Report
  • Research Products

    (46 results)

All Other

All Publications (46 results)

  • [Publications] Nishioka, T: "Computational Dynamic Fracture Mechanics" International Journal of Fracture, A special Issue on Computational Mechanics. Vol.86, No.1/2. 127-159 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nishioka, T: "Numerical Simulation Methodologies for Dynamic Crack Propagation in Homogeneous and Nonhomogeneous Materials" Damage and Failure of Interface. (H.P.Rossmanith, editor. 37-45 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nishioka, T.and Yasin, A.: "The Dynamic J Integral, Separated Dynamic J Integrals and Moving Finite Element Simulations, for Subsonic, Transonic and Supersonic Interfacial Crack Propagation" JSME International Journal. Series A. Vol.42, No.1. 25-39 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 西岡俊久: "材料・構造物の衝撃破壊現象に関する基礎的研究" 日本機械学会、材料・構造物の衝撃破壊現象とその防止に関する調査研究シンポジウム講演論文集. 23-28 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 西岡俊久、Anwer Yasin、木下政広、徳留宏幸: "非直進および混合モード高速破壊進展の数値シミュレーション手法" 計算工学講演会論文集. 3巻、3号. 851-8540 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nishioka, T and Yasin, A.: "Finite Element Simulations of Impact Interfacial Fracture Problems (6 pages)" Proceedings of the 3rd International Symposium on impact Engineering. (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nishioka, T., Tokudome, H., Kinoshita, M.and Nishida, H.: "Dynamic Fracture Path Prediction by Moving Finite Element Method Based on Delaunay Automatic Triangulation" Modeling and Simulation Based Engineering. Vol.II. 1335-1340 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nishioka, T.: "On the Dynamic J Integral in Dynamic Fracture Mechanics for Homogeneous and Nonhomogeneous Materials" Modeling and Simulation Based Engineering. Vol.II. 2077-2086 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nishioka, T.and Wand, Z.M.: "The T^* Integral and the Separated T^* Integrals for Elastic-Plastic Interfacial Cracks" Constitutive and Damage Modeling of Inelastic Deformation and Phase Transformation. 741-744 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 西岡俊久、徳留宏幸、木下政広: "デローニー自動要素分割に基礎をおく移動有限要素法による混合形・破壊経路予測モードシミュレーション" 日本機械学会論文集(A編). 65巻631号. 597-604 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 西岡俊久、艾尼瓦尓亜森: "衝撃界面き裂の分離動的J積分と応答シミュレーション" 日本機械学会論文集(A編). 65巻632号(掲載予定). (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nishioka, T.: "Theoretical and Computational Aspects of the Dynamic J Integral in Dynamic Fracture Mechanics for Homogeneous and Nonhomogeneous Materials" Computer Modeling and Simulation in Engineering. Vol.4, No.2(掲載予定). (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 西岡俊久: "界面高速破壊および動的破壊伝播経路予測の数値シミュレーション" 第4回研究集会「破壊の理論研究と数値解析」東京大学地震研究所報告. (掲載予定). (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 西岡俊久、徳留宏幸、坂倉慧悟: "衝撃下における破壊現象の高速度撮影と破壊経路予測シミュレーション" 九州大学応用力学研究所「衝撃下における材料の力学的挙動」研究集会報告. 10ME-S6. 80-89 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nishioka, T.: ""Computational Dynamic Fracture Mechanics", International Journal of Fracture" A special Issue on Computational Mechanics. Vol.86, No.1/2. 127-159 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nishioka, T.: ""Numerical Simulation Methodologies for Dynamic Crack Propagation in Homogeneous and Nonhomogeneous Materials", Damage and failure of Interface, (H.P.Rossmanith, editor)" Balkema. 37-45 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nishioka, T.and Yasin, A.: ""The Dynamic J Integral, Separated Dynamic J Integrals and Moving Finite Element Simulations, for Subsonic, Transonic and Supersonic Interfacial Crack Propagation"" JSME International Journal, Series.A.Vol.42, No.1. 25-39 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nishioka, T.: ""Basic Studies on Impact Fracture Phenomena in Materials and Structures" (in Japanese), Proceedings of Symposium on Impact Fracture Phenomena in Materials and Structures and Their Prevention" Report of Research Committee in Materials and Mechanics Division of The Japan Society of Mechanical Engineers. No.531. 23-28 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nishioka, T., Yasin, Y., Kinoshita, M.and Tokudome, Y.: ""Numerical Simulation Methodologies for Non-Self-Similar and Mixed-Mode Fast Fracture Propagation Phenomena"" Proceedings of the Conference on Computational Engineering and Science. Vol.3, No.3, (in Japanese). 851-854 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nishioka, T.and Yasin, A.: ""Finite Element Simulations of Impact Interfacial Fracture Problems"" Proceedings of the 3rd International Symposium on Impact Engineering, Singapore, December 7-9. 6 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nishioka, T., Tokudome, H.Kinoshita, M.and Nishida, H.: ""Dynamic Fracture Path Prediction by Moving Finite Element Method Based on Delaunay Automatic Triangulation"" Modeling and Simulation Based Engineering. Vol.II,Tech Science Press. 1335-1340 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nishioka, T.: "On the Dynamic J Integral in Dynamic Fracture Mechanics for Homogeneous and Nonhomogeneous Materials"" Modeling and Simulation Based. Vol.II,Tech Science Press. 2077-2086 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nishioka, T.and Wang, Z.M.: ""The T^* Integral and the Separated T^* Integrals for Elastic-Plastic Interfacial Cracks", Constitutive and Damage Modeling of Inelastic Deformation and Phase Transformation, (A.S.Khan, editor)" Neat Press, Fulton, Maryland. 741-744 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nishioka, T., Tokudome, H., and Kinoshita, M.: ""Mixed-Phase Simulation with Fracture-Path Prediction Mode Using Moving Finite Element Method Based on Delaunay Automatic Mesh Generation" Transactions of the Japan Society of Mechanical Engineers, Series A.Vol.65, No.631 (in Japanese). 597-604 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nishioka, T.and Yasin, Y.: ""The Separated Dynamic J Integrals and Response Simulations of Interfacial Cracks Subject to Impact Loading"" Transactions of the Japan Society fo Mechanical Engineers, Series A. Vol.65, No.632 to appear in the April issue (in Japanese). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nishioka, T.: ""Theoretical and Computational Aspects of the Dynamic J Integral in Dynamic Fracture Mechanics for Homogeneous and Nonhomogeneous Materials"" Computer Modeling and Simulation in Engineering. Vol.4, No.2. 1-8 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nishioka, T.: "Numerical Simulations of Interfacial Fast Fracture and Dynamic Crack Propagation Path Prediction", (in Japanese), Reports of The 4th Meeting 「Theoretical Studies and Numerical Analyses of Fracture」" Earthquake Research Institute, The University of Tokyo. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nishioka, T., Tokudome, H.and Sakakura, K.: ""High-Speed Photography of Impact Fracture Phenomena and Numerical Simulation of Fracture Path Predictioin"" Report of Meeting on Mechanical Behavior of Materials under Impact, Research Institute of Applied Mechanics. 10ME-S6. 80-89 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nishioka,T: "Computational Dynamic Fracture Mechanics" International Journal of Fracture,A special Issue on Computational Mechanics. Vol.86,No.1/2,. 127-159 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] Nishioka,T: "Numerical Simulation Methodologies for Dynamic Crack Propagation in Homogeneous and Nonhomogeneous Materials" Damage and Failure of Interface. (H.P.Rossmanith,editor. 37-45 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] Nishioka,T.and Yasin,A.: "The Dynamic J Integral,Separated Dynamic J Integrals and Moving Finite Element Simulations,for Subsonic,Transonic and Supersonic Interfacial Crack Propagation" JSME International Journal,Series A. Vol.42,No.1. 25-39 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 西岡俊久: "材料・構造物の衝撃破壊現象に関する基礎的研究" 日本機械学会、材料・構造物の衝撃破壊現象とその防止に関する調査研究シンポジウム講演論文集. 23-28 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 西岡俊久、Anwer Yasin、木下政広、徳留宏幸: "非直進および混合モード高速破壊進展の数値シミュレーション手法" 計算工学講演会論文集. 3巻、3号. 851-8540 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Nishioka,T and Yasin,A.: "Finite Element Simulations of Impact Interfacial Fracture Problems" Proceedings of the 3rd International Symposium on Impact Engineering. 6 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Nishioka,T.,Tokudome,H.,Kinoshita,M.and Nishida,H.: "Dynamic Fracture Path Prediction by Moving Finite Element Method Based on Delaunay Automatic Triangulation" Modeling and Simulation Based Engineering. Vol.II. 1335-1340 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Nishioka,T.: "On the Dynamic J Integral in Dynamic Fracture Mechanics for Homogeneous and Nonhomogeneous Materials" Modeling and Simulation Based Engineering. Vol.II. 2077-2086 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Nishioka,T.and Wang,Z.M.: "The T^* Integral and the Separated T^* Integrals for Elastic-Plastic Interfacial Cracks" Constitutive and Damage Modeling of Inelastic Deformation and Phase Transformation. 741-744 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 西岡俊久、徳留宏幸、木下政広: "デローニー自動要素分割に基礎をおく移動有限要素法による混合形・破壊経路予測モードシミュレーション" 日本機械学会論文集(A編). 65巻631号. 597-604 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 西岡俊久、艾尼瓦尓亜森: "衝撃界面き裂の分離動的J積分と応答シミュレーション" 日本機械学会論文集(A編). 65巻632号(掲載予定). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Nishioka,T.: "Theoretical and Computational Aspects of the Dynamic J Integral in Dynamic Fracture Mechanics for Homogeneous and Nonhomogeneous Materials" Computer Modeling and Simulation in Engineering. Vol.4,No.2(掲載予定). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 西岡俊久: "界面高速破壊および動的破壊伝播経路予測の数値シミュレーション" 第4回研究集会「破壊の理論研究と数値解析」東京大学地震研究所報告. (掲載予定). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 西岡俊久、徳留宏幸、坂倉慧悟: "衝撃下における破壊現象の高速度撮影と破壊経路予測シミュレーション" 九州大学応用力学研究所「衝撃下における材料の力学的挙動」研究集会報告. 10ME-S6. 80-89 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Nishioka: "Computational Dynamic Fracture Mechanics" International Journal of Fracture. Vol.86,No.1/2. 127-159 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Nishioka: "Numerical Simulation Methodologics for Dynamic Crack Propagation in Homogeneous and Nonhomogeneous Materials" Damage and Failure of Interface. 37-45 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 西岡俊久: "固体衝撃破壊の数値シミュレーション" 計算工学. Vol.2,No.3. 146-156 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Nishioka: "Computational Dynamic Fracture Mechanics" International Journal of Fracture. (1997)

    • Related Report
      1996 Annual Research Report

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

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