대한기계학회논문집A (Transactions of the Korean Society of Mechanical Engineers A)

  • 제28권6호
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  • Pages.701-708
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  • 2004
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  • 1226-4873(pISSN)
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  • 2288-5226(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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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

  • 발행 : 2004.06.01
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초록

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.

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참고문헌

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