
Ghaffari Some’e, H., Barati, F., Mahbadi, H. (2013). Calculating Stress Intensity Factor for Small Edge Radial Cracks on an Orthotropic Thickwalled Cylinder Subjected to Internal Pressure using the Average Stress. Iranian Journal of Mechanical Engineering Transactions of the ISME, 14(2), 98109.H. Ghaffari Some’e; F. Barati; H. Mahbadi. "Calculating Stress Intensity Factor for Small Edge Radial Cracks on an Orthotropic Thickwalled Cylinder Subjected to Internal Pressure using the Average Stress". Iranian Journal of Mechanical Engineering Transactions of the ISME, 14, 2, 2013, 98109.Ghaffari Some’e, H., Barati, F., Mahbadi, H. (2013). 'Calculating Stress Intensity Factor for Small Edge Radial Cracks on an Orthotropic Thickwalled Cylinder Subjected to Internal Pressure using the Average Stress', Iranian Journal of Mechanical Engineering Transactions of the ISME, 14(2), pp. 98109.Ghaffari Some’e, H., Barati, F., Mahbadi, H. Calculating Stress Intensity Factor for Small Edge Radial Cracks on an Orthotropic Thickwalled Cylinder Subjected to Internal Pressure using the Average Stress. Iranian Journal of Mechanical Engineering Transactions of the ISME, 2013; 14(2): 98109.
Calculating Stress Intensity Factor for Small Edge Radial Cracks on an Orthotropic Thickwalled Cylinder Subjected to Internal Pressure using the Average Stress
Article 6, Volume 14, Issue 2  Serial Number 21, Summer and Autumn 2013, Page 98109
PDF (755 K)
Document Type: Research Paper
Authors
H. Ghaffari Some’e^{1}; F. Barati^{2}; H. Mahbadi ^{} ^{} ^{3}
^{1}Mechanical Engineering Department, Hamedan Science and Research Branch, Islamic Azad University, Hamedan, IRAN
^{2}Mechanical Engineering Department, Hamedan Branch, Islamic Azad University, Hamedan, IRAN
^{3}Mechanical Engineering Department, Islamic Azad University, Central Tehran Branch, Tehran, IRAN
Abstract
In this paper, the problem of calculating the stress intensity factor (SIF) for an orthotropic thickwalled cylinder with a small radial crack subject to internal pressure is considered. The crack is assumed to be an edge crack on the external radius of the cylinder. The stress intensity factor is calculated by superposition of an uncracked cylinder with uniform stress distribution and a cylinder with a small radial crack. To calculate the stress distribution in the small radial crack, basic assumptions of the Linear Elastic Theory have been used. Due to the small length of the crack, an average stress method with a proper weight function is then used to evaluate the stress intensity factor of the assumed crack problem. Simplifying the proposed formula for orthotropic cylinder to the isotropic one, the results are validated against data given in the literature search.
Keywords
Small Radial Crack; thickwalled cylinder; stress intensity factor; Orthotropic Cylinder
Main Subjects
Fracture mechanics
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