Evaluating Stress Distributions and Stress Intensity Factors of a Crack under Mixed-Mode conditions in Aluminum Alloy

2010 ◽  
Author(s):  
Youli Ma
Keyword(s):  
Aluminum Alloy ◽  
Stress Intensity ◽  
Stress Intensity Factors ◽  
Mixed Mode ◽  
Stress Distributions ◽  
Intensity Factors

scholarly journals An evaluation of the loading condition on mixed-mode stress intensity factors for CTST specimens made of 2024-T351 aluminum alloy

2021 ◽  
Author(s):  
Afshin Khatammanesh ◽  
Khalil Farhangdoost ◽  
Danial Ghahremani-Moghadam
Keyword(s):  
Aluminum Alloy ◽  
Stress Intensity ◽  
Stress Intensity Factors ◽  
Mixed Mode ◽  
Integral Approach ◽  
Unstable Fracture ◽  
Pure Mode ◽  
Loading Conditions ◽  
Intensity Factors ◽  
Mode Iii

In this research paper, the unstable fracture of 2024-T351 aluminum alloy is studied under a variety of in-plane and out-of-plane mixed-mode loading conditions including pure mode I and pure mode III loadings. A recently proposed loading device with compact tension shear tearing (CTST) specimens is employed for performing fracture experiments. Three-dimensional finite element analyses using the M-integral approach are conducted to derive the stress intensity factors distributions along the crack front for different mixed-mode configurations. The numerical results reveals that the coupled effect of modes II and III can be observed under mixed-modes I/II, I/III and I/II/III loading conditions. Furthermore, the values of stress intensity factors at the midsection of the specimens are used to predict the critical loads based on different mixed-mode criteria. A good consistency is observed between the theoretical predictions of the criteria and the experimental results for different loading conditions.

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