Dynamic stress intensity factors KI, KII and dynamic crack propagation characteristics of orthotropic material

1996 ◽  
Vol 53 (1) ◽  
pp. 119-140 ◽  
Author(s):  
Kwang-Ho Lee ◽  
Jai-Sug Hawong ◽  
Sun-Ho Choi
Keyword(s):  
Stress Intensity ◽  
Crack Propagation ◽  
Stress Intensity Factors ◽  
Orthotropic Material ◽  
Dynamic Stress ◽  
Dynamic Crack Propagation ◽  
Dynamic Crack ◽  
Propagation Characteristics ◽  
Intensity Factors ◽  
Dynamic Stress Intensity Factors

scholarly journals Dynamic crack propagation between two bonded orthotropic plates

2004 ◽  
Vol 2004 (1) ◽  
pp. 55-68 ◽  
Author(s):  
M. S. Matbuly
Keyword(s):  
Stress Intensity ◽  
Crack Propagation ◽  
Stress Intensity Factors ◽  
Dynamic Stress ◽  
Fourier Transforms ◽  
Dynamic Crack ◽  
Cauchy Type ◽  
Intensity Factors ◽  
Orthotropic Plates ◽  
Dynamic Stress Intensity Factors

The problem of crack propagation along the interface of two bonded dissimilar orthotropic plates is considered. Using Galilean transformation, the problem is reduced to a quasistatic one. Then, using Fourier transforms and asymptotic analysis, the problem is reduced to a pair of singular integral equations with Cauchy-type singularity. These equations are solved using Gauss-Chebyshev quadrature formulae. The dynamic stress intensity factors are obtained in closed form expressions. Furthermore, a parametric study is introduced to investigate the effect of crack growth rate and geometric and elastic characteristics of the plates on values of dynamic stress intensity factors.

Numerical Modeling of Dynamic Crack Propagation in Finite Bodies, by Moving Singular Elements—Part 2: Results

1980 ◽  
Vol 47 (3) ◽  
pp. 577-582 ◽  
Author(s):  
T. Nishioka ◽  
S. N. Atluri
Keyword(s):  
Crack Propagation ◽  
Dynamic Stress ◽  
Numerical Solutions ◽  
Dynamic Crack Propagation ◽  
Dynamic Crack ◽  
Intensity Factors ◽  
Infinite Domain ◽  
Wave Interactions ◽  
Dynamic Stress Intensity Factors ◽  
Finite Domains

Using the moving-singularity finite-element method described in Part 1 of this paper, several problems of dynamic crack propagation in finite bodies have been analyzed. Discussions of the effects of wave interactions on the dynamic stress-intensity factors are presented. The obtained numerical results are compared with the corresponding infinite domain solutions and other available numerical solutions for finite domains.

scholarly journals Dynamic Crack Analysis in Isotropic/Orthotropic Media via Extended Isogeometric Analysis

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Tiantang Yu ◽  
Yongling Lai ◽  
Shuohui Yin
Keyword(s):  
Stress Intensity ◽  
Stress Intensity Factors ◽  
Isogeometric Analysis ◽  
Dynamic Stress ◽  
Time Integration ◽  
Integration Scheme ◽  
Dynamic Crack ◽  
Intensity Factors ◽  
Dynamic Stress Intensity Factors ◽  
Orthotropic Media

The extended isogeometric analysis (X-IGA) is the combination of the extended finite element method (X-FEM) and the isogeometric analysis (IGA), so the X-IGA possesses the advantages of both methods. In this paper, the X-IGA is extended to investigate the dynamic stress intensity factors of cracked isotropic/orthotropic media under impact loading. For this purpose, a corresponding dynamic X-IGA model is developed, the Newmark time integration scheme is used to achieve a dynamic response, and the dynamic stress intensity factors are evaluated through the contour interaction integral technique. Numerical simulations show that the X-IGA results agree with other available reference solutions, and accurate results can be obtained by using the X-IGA with a relatively coarse mesh.

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