Study on general solution of local flexibility of pipe with a part-through straight crack

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Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (5) : 169-173,.

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Study on general solution of local flexibility of pipe with a part-through straight crack

Hu JiaShun1 Sun WenYong1 Liu Duo2 Zhou Jing2

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Abstract

Abstract: The crack model based on local flexibility has received attractive attention in engineering. However, the study on the local flexibility of pipe with a crack that has an arbitrary angle is scarce. The local flexibility equations of the pipe with a part-through crack that subjected to axial force, shearing force and bending moment were deduced from theories of linear fracture mechanics taking into the effect of the angle of crack on the local flexibility of pipe account. An adaptive Simpson method was used to obtain the flexibility coefficients of cracked pipe and the results of Naniwadekar’s experiment was used to validate the proposed approach. The results demonstrate that the proposed approach to local flexibility is accurate, which is suitable for vibration analysis of pipe-like structure with an arbitrary angle crack.

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Vibration analysis / local flexibility / pipe / crack / angle of crack.

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Hu JiaShun Sun WenYong Liu Duo Zhou Jing. Study on general solution of local flexibility of pipe with a part-through straight crack[J]. Journal of Vibration and Shock, 2011, 30(5): 169-173,