Numerical Analysis of Stress Intensity Factor for Semi-Elliptical Crack on Cylinder Surface

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Numerical Analysis of Stress Intensity Factor for Semi-Elliptical Crack on Cylinder Surface

更新时间：2025-07-09

- Numerical Analysis of Stress Intensity Factor for Semi-Elliptical Crack on Cylinder Surface
- Vol. 43, Issue 7, Pages: 63-68(2009)
- 作者机构：
  
  1. 西安交通大学能源与动力工程学院,西安,710049
  2. 武汉工程大学机电工程学院,武汉,430074
- 作者简介：
- 基金信息：
- DOI：
  CLC： TH123
- Online First：10 July 2009，
  
  Published：2009
- 稿件说明：
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Numerical Analysis of Stress Intensity Factor for Semi-Elliptical Crack on Cylinder Surface[J]. 2009, 43(7): 63-68.
DOI：

Numerical Analysis of Stress Intensity Factor for Semi-Elliptical Crack on Cylinder Surface[J]. 2009, 43(7): 63-68. DOI：

摘要

为解决用有限元方法进行三维裂纹问题分析时的难点

通过在裂纹前沿设置奇异单元

建立了圆筒表面椭圆裂纹的断裂力学有限元分析模型; 通过Visual Basic对ANSYS的封装调用

编制了便于工程化应用的圆筒表面椭圆裂纹应力强度因子自动分析软件AutoSIFA; 运用该软件得到了弯扭载荷作用下圆筒表面椭圆裂纹应力强度因子的变化规律

绘制了裂纹最深点应力强度因子形状修正系数F

的曲线图谱

并拟合出了便于工程应用的相关公式.

Abstract

A fracture finite element analysis model of the semi-elliptical crack on cylinder surface is established by putting singular elements along the front edge of the crack. By linking Visual Basic with ANSYS

a software named AutoSIFA is compiled to calculate the stress intensity factor(SIF)of the semi-elliptical surface crack automatically and conveniently. The varying regular patterns of SIF under torsion and bending are obtained by the AutoSIFA. Hence

the diagrammatic curves of the amending factor F

Ⅰ

of the deepest point of the crack are plotted

and the relevant formulas are fitted for engineering applications.

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Keywords

references

孔宪明,郑斯滔,崔振源.圆柱壳体的曲率半径对表面裂纹应力强度因子的影响[J].固体力学学报, 1989, 10(1): 53-59

KONG Xianming, ZHENG Sitao, CUI Zhenyuan. The effects of curvature radius of cylindrical shell on stress intensity factors of surface cracks [J]. Acta Mechanica Solida Sinica, 1989, 10(1): 53-59.

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CARPINTERI A, BRIGHENTI R. Circumferential surface flaws in pipes under cyclic axial loading [J]. Eng Fract Mech, 1998, 60(4): 383-396.

PENG D, WALLBRINK C, JONES R. An assessment of stress intensity factors for surface flaws in a tubular member [J]. Eng Fract Mech, 2005, 72(3): 357-371.

WALLBRINK C, PENG D, JONES R. Assessment of partly circumferential cracks in pipes [J]. Int J Fract, 2005, 133(2): 167-181.

王志群,朱务学,查子初. 用有限元法计算自增强厚壁圆筒的应力强度因子[J]. 机械强度, 1989, 11(3): 62-66.

WANG Zhiqun, ZHU Wuxue, ZHA Zichu. The evaluation of the stress intensity factors for autofrettaged cylinders with radial cracks [J]. Journal of Mechanical Strength, 1989, 11(3): 62-66.

BARSOUM R S. On the use of isoperimetric finite element in linear fracture mechanics [J]. International Journal for Numerical Methods in Engineering, 1976, 10(1): 25-37.

BUSH A J. Stress intensity fractures for single-edge-crack solid and hollow round bars loaded in tension [J]. Journal of Testing and Evaluation, 1981, 9(4): 216-223.

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