• 제목/요약/키워드: J-Estimation

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반타원 표면균열 선단을 따른 참조응력 기반의 J-적분 예측 (Reference Stress Based J-Integral Estimates Along the Semi-Elliptical Surface Crack Front)

  • 김진수;심도준;김윤재;김영진
    • 대한기계학회논문집A
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    • 제28권6호
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    • pp.701-708
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    • 2004

  • This paper discusses applicability of the enhanced reference stress method to estimate J-integral along the semi-elliptical surface crack front. It is found that angular variations of normalized J­integral are strongly dependent on the geometry, loading mode and loading magnitude. As application of the reference stress approach to semi-elliptical surface cracks implies proportional increases in the normalized J-integral, the present results pose a question in applicability of the reference stress approach. However, investigation of the error in the estimated J-integral in the present work suggests that the enhanced reference stress approach, recently proposed by authors, provides an effective engineering tool fur estimating crack driving force along the semi-elliptical surface crack front.

  • https://doi.org/10.3795/KSME-A.2004.28.6.701 인용 PDF KSCI