Crack growth angle prediction of an internal crack under mixed mode load for unfilled elastomer using the strain energy density factor

2021 ◽  
Author(s):  
Mohammed El Yaagoubi ◽  
Jens Meier
Keyword(s):  
Energy Density ◽  
Crack Growth ◽  
Strain Energy Density ◽  
Mixed Mode ◽  
Strain Energy ◽  
Internal Crack ◽  
Growth Angle ◽  
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

Mixed-Mode Fatigue Crack Growth in Orthotropic Steel Decks

2006 ◽  
Vol 321-323 ◽  
pp. 733-738 ◽  
Author(s):  
Dong Ho Choi ◽  
Hang Yong Choi ◽  
Sang Hwan Chung ◽  
Hoon Yoo
Keyword(s):  
Fatigue Crack ◽  
Stress Intensity ◽  
Fatigue Crack Growth ◽  
Crack Length ◽  
Crack Growth ◽  
Strain Energy Density ◽  
Mixed Mode ◽  
Strain Energy ◽  
Density Factor ◽  
Energy Density Factor

The strain energy density factor approach under mixed-mode condition is used for the prediction of crack propagation in the orthotropic steel deck specimen, which is similar to that of existing suspension bridges. Stress intensity factor approach is used to compare with strain energy density factor approach for the fatigue crack growth analysis. The stress intensity factors are computed by numerical extrapolation using cracked models for the different crack length. The study shows that the fatigue crack propagation under mixed-mode condition is slower than that under mode I only. Parametric studies on the initial crack length, critical crack length and parameters related to crack growth equations are performed to show the influence of these parameters on the fatigue life.

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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