含非贯穿直裂纹管道局部柔度系数的广义解研究

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振动与冲击 ›› 2011, Vol. 30 ›› Issue (5) : 169-173,.

论文

含非贯穿直裂纹管道局部柔度系数的广义解研究

胡家顺1;孙文勇1;刘朵2;周晶2

作者信息 +

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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文章历史 +

摘要

摘要：基于局部柔度的裂纹模型研究已受到普遍关注，然而，针对含任意方向角裂纹管道的局部柔度系数理论研究鲜有报道。本文根据线性断裂力学理论推导了含任意方向角非贯穿直裂纹管道在轴力、剪力和弯矩等荷载作用下的局部柔度方程，考虑了方向角变化对弯矩引起局部柔度系数的影响。利用适应性Simpson方法编写了数值积分程序进行局部柔度系数求解，并与Naniwadekar等人试验结果进行了对比分析。研究结果表明：本文提出的局部柔度系数求解方法准确，为含任意方向角裂纹管道的振动分析提供了基础。

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.

导出引用

胡家顺;孙文勇;刘朵;周晶. 含非贯穿直裂纹管道局部柔度系数的广义解研究[J]. 振动与冲击, 2011, 30(5): 169-173,

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,