scholarly journals Evaluation of mixed mode (I/II) notch stress intensity factors of sharp V-notches using a point substitution displacement technique

2019 ◽  
Vol 13 (48) ◽  
pp. 599-610
Author(s):  
Mirzaul Hussain ◽  
K.S.R.K. Murthy
Keyword(s):  
Stress Intensity ◽  
Stress Intensity Factors ◽  
Mixed Mode ◽  
Mode I ◽  
Intensity Factors ◽  
Notch Stress ◽  
Notch Stress Intensity Factors

scholarly journals Numerical Estimation of Notch Stress Intensity Factors of Sharp V-Notches

2018 ◽  
Vol 172 ◽  
pp. 03001
Author(s):  
Mirzaul Karim Hussain ◽  
K.S.R.K. Murthy
Keyword(s):  
Finite Element ◽  
Present Method ◽  
Mixed Mode ◽  
Least Squares Method ◽  
Mode I ◽  
Intensity Factors ◽  
Notch Stress ◽  
Stress Components ◽  
Mode Stress ◽  
Notch Stress Intensity Factors

In the present work a simple and efficient least squares method is implemented for accurate estimation of notch stress intensity factors (NSIFs) of sharp V-notches. Finite element (FE) stress components near a notch tip is used in the present method for determining the NSIFs. Pure mode I and mixed mode (I/II) examples are considered for numerical investigations. The mixed mode stress components are disintegrated into opening mode and shear mode stress components to separate out the mode I and mode II singularities. Thereafter, least squares method is implemented to calculate mixed mode NSIFs. The present method is easy to incorporate in existing standard finite element codes. The results obtained by the present method are found to be in good agreement with the published data.

Estimation of Mixed-Mode Stress Intensity Factors with Presence of the Confinement Parameters T-Stress and A3

2016 ◽  
Vol 18 ◽  
pp. 52-57
Author(s):  
Lahouari Fodil ◽  
Abdallah El Azzizi ◽  
Mohammed Hadj Meliani
Keyword(s):  
Stress Intensity ◽  
Stress Intensity Factors ◽  
Mixed Mode ◽  
Compact Tension ◽  
Mode I ◽  
Mode Ii ◽  
Mixed Mode Fracture ◽  
Intensity Factors ◽  
Element Analysis ◽  
T Stress

A failure criterion is proposed for ductile fracture in U-notched components under mixed mode static loading. The Compact Tension Shear (CTS) is the preferred test specimen used to determine stress intensity factor in the mode I, mode II and the mixed-mode fracture. In this work, the mode I and mode II stress intensity factors were computed for different notch ratio lengths 0.1<a/W<0.7, of the inner radius of notch 0.25mm<ρ<4mm and load orientation angles 0°<α< 90° using finite element analysis. However, a review of numerical analysis results reveals that the conventional fracture criteria with only stress intensity factors (NSIFs) Kρ first term of Williams’s solution provide different description of stress field around notch zone comparing with results introduce the second and third parameter T-stress and A3.

Accurate Measurement of Mixed Mode (I/II) Stress Intensity Factors Using Strain Gages

2016 ◽  
Vol 45 (3) ◽  
pp. 20150411 ◽  
Author(s):  
H. Sarangi ◽  
K. S. R. K. Murthy ◽  
D. Chakraborty
Keyword(s):  
Stress Intensity ◽  
Stress Intensity Factors ◽  
Mixed Mode ◽  
Mode I ◽  
Strain Gages ◽  
Intensity Factors
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