Stress Intensity Factor for a Circumferential Crack in a Finite-Length Thin to Thick Walled Cylinder under an Arbitrary Biquadratic Stress Distribution on the Crack Surfaces

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タイトル別名
  • Stress Intensity Factor for a Circumferential Crack in a Finite-Length Thin to Thick-Walled Cylinder under an Arbitrary Biqudratic Stress Distribution on the Crack Surfaces
公開日
2001-05
公開者
Pergamon Press

説明

This paper presents the development of a practical method, by using prepared tabulated data, to calculate the mode I stress intensity factor (SIF) for an inner surface circumferential crack in a finite length cylinder. The crack surfaces are subjected to an axisymmetric stress with an arbitrary biquadratic radial distribution. The method was derived by applying the authors' weight function for the crack. This work is based on the thin shell theory and the Petroski-Achenbach method. Our method is valid over a wide range of mean radius to wall thickness ratio, Rm/W 〓 1, and for relatively short cracks with a/W 〓 0.5. The difference between the SIF obtained by our method for the geometry and that from finite element analysis is within 5%. The method we developed describes the effect that cylinder length gives on the SIF. This effect needs to be considered for cylinders shorter than non-dimensional cylinder length βH〓 5.

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