Strain-energy-density factor applied to mixed mode crack problems

1974 ◽  
Vol 10 (3) ◽  
pp. 305-321 ◽  
Author(s):  
G. C. Sih
Keyword(s):  
Energy Density ◽  
Strain Energy Density ◽  
Mixed Mode ◽  
Strain Energy ◽  
Mixed Mode Crack ◽  
Crack Problems ◽  
Density Factor ◽  
Energy Density Factor

Fracture of elastomers under static mixed mode: the strain-energy-density factor

2007 ◽  
Vol 144 (2) ◽  
pp. 65-75 ◽  
Author(s):  
A. Hamdi ◽  
N. Aït Hocine ◽  
M. Naït Abdelaziz ◽  
N. Benseddiq
Keyword(s):  
Energy Density ◽  
Strain Energy Density ◽  
Mixed Mode ◽  
Strain Energy ◽  
Density Factor ◽  
Energy Density Factor

The Volume Strain Energy Density Factor Criterion for Sharp V-Notches under Mixed-Mode I and II

2015 ◽  
Vol 782 ◽  
pp. 170-176
Author(s):  
Xiao Mei Liu ◽  
Yong Ming Bian ◽  
Yong Cheng Liang
Keyword(s):  
Energy Density ◽  
Strain Energy Density ◽  
Mixed Mode ◽  
Strain Energy ◽  
Mode I ◽  
Experiment Data ◽  
Volume Strain ◽  
New Energy ◽  
Density Factor ◽  
Energy Density Factor

This paper presents a new energy approach based on the concept of a volume stain-energy-density factor useful to deal with the general problem of brittle fracture for sharp V-notches under mixed-mode I and II. The basic assumption is that the fracture occurs when the volume strain energy density factor arrive at its critical value in the direction of crack initiation where the deviator strain energy density factor is minimum. The method is validated taking into account experiment data already reported in the literature and the analytical predictions are in good agreement with experiment data. It indicates that the accuracy of the new approach is undoubtedly very satisfactory and can be applied in engineering.

On the Crack Initiated from the Bi-Material Notch Tip

2010 ◽  
Vol 452-453 ◽  
pp. 441-444 ◽  
Author(s):  
Tomáš Profant ◽  
Jan Klusák ◽  
Michal Kotoul
Keyword(s):  
Energy Density ◽  
Strain Energy Density ◽  
Strain Energy ◽  
Local Minimum ◽  
Plane Elasticity ◽  
Mean Value ◽  
Tangential Stresses ◽  
Density Factor ◽  
The Mean ◽  
Energy Density Factor

The bi-material notch composed of two orthotropic parts is considered. The radial and tangential stresses and strain energy density is expressed using the Stroh-Eshelby-Lekhnitskii formalism for the plane elasticity. The potential direction of the crack initiation is determined from the maximum mean value of the tangential stresses and local minimum of the mean value of the generalized strain energy density factor in both materials. Matched asymptotic procedure is used to derive the change of potential energy for the debonding crack and the crack initiated in the determined direction.

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