Stress intensity factors and plastic zones of stiffened panels with multiple collinear cracks

2020 ◽  
Vol 110 ◽  
pp. 102816
Author(s):  
Bo Zhang ◽  
Wu Xu ◽  
Xueren Wu ◽  
Yin Yu ◽  
Dengke Dong
Keyword(s):  
Stress Intensity ◽  
Stress Intensity Factors ◽  
Intensity Factors ◽  
Collinear Cracks ◽  
Stiffened Panels ◽  
Plastic Zones

scholarly journals Thermoelastic Analysis for Two Collinear Cracks in an Orthotropic Solid Disturbed by Antisymmetrical Linear Heat Flow

2017 ◽  
Vol 2017 ◽  
pp. 1-10
Author(s):  
Bing Wu ◽  
Jun-gao Zhu ◽  
Daren Peng ◽  
Rhys Jones ◽  
Shi-hu Gao ◽  
...  
Keyword(s):  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Heat Flow ◽  
Intensity Factor ◽  
Thermal Resistance ◽  
Integral Equations ◽  
Stress Intensity Factors ◽  
Mode Ii ◽  
Intensity Factors ◽  
Collinear Cracks

The problem of two collinear cracks in an orthotropic solid under antisymmetrical linear heat flow is investigated. It is assumed that there exists thermal resistance to heat conduction through the crack region. Applying the Fourier transform, the thermal coupling partial differential equations are transformed to dual integral equations and then to singular integral equations. The crack-tip thermoelastic fields including the jumps of temperature and elastic displacements on the cracks and the mode II stress intensity factors are obtained explicitly. Numerical results show the effects of the geometries of the cracks and the dimensionless thermal resistance on the temperature change and the mode II stress intensity factors. Also, FEM solutions for the stress intensity factor K are used to compare with the solutions obtained using the method. It is revealed that the friction in closed crack surface region should be considered in analyzing the stress intensity factor K.

scholarly journals Internal and Edge Cracks in a Plate of Finite Width Under Bending

1983 ◽  
Vol 50 (3) ◽  
pp. 621-629 ◽  
Author(s):  
H. Boduroglu ◽  
F. Erdogan
Keyword(s):  
Stress Intensity ◽  
Stress Intensity Factors ◽  
Internal Crack ◽  
Finite Width ◽  
Free Boundaries ◽  
Intensity Factors ◽  
Collinear Cracks ◽  
Shear Theory ◽  
Title Problem ◽  
Edge Cracks

In this paper the title problem is studied by using Reissner’s transverse shear theory. The main purpose of the paper is to investigate the effect of stress-free boundaries on the stress intensity factors in plates under bending. Among the results found particularly interesting are those relating to the limiting cases of the crack geometries. The numerical results are given for a single internal crack, two collinear cracks, and two edge cracks. Also studied is the effect of Poisson’s ratio on the stress intensity factors.

An Infinite Sequence of Collinear Cracks Subjected to Concentrated Loads

2013 ◽  
Vol 135 (5) ◽  
Author(s):  
Xiangqiao Yan ◽  
Yintao Wei
Keyword(s):  
Stress Intensity ◽  
Stress Intensity Factors ◽  
Infinite Sequence ◽  
Numerical Approach ◽  
High Accuracy ◽  
Concentrated Loads ◽  
Intensity Factors ◽  
Collinear Cracks ◽  
Numerical Examples ◽  
Very High

A numerical approach to an infinite sequence of collinear cracks is presented in this paper. Numerical examples are included to illustrate the accuracy of the numerical approach. Specifically, an infinite sequence of collinear cracks subjected to concentrated loads is analyzed using the numerical approach. Many numerical results of the stress intensity factors (SIFs) are given. In addition, an experiential formula to calculate the SIFs of the infinite sequence of collinear cracks is presented. Numerical examples show that the experiential formula has very high accuracy.

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