On the virtual crack extension method for calculation of the rates of energy release rate

1998 ◽  
Vol 59 (4) ◽  
pp. 521-542 ◽  
Author(s):  
C.G. Hwang ◽  
P.A. Wawrzynek ◽  
A.K. Tayebi ◽  
A.R. Ingraffea
Keyword(s):  
Energy Release Rate ◽  
Energy Release ◽  
Release Rate ◽  
Crack Extension ◽  
Extension Method ◽  
Virtual Crack Extension ◽  
Virtual Crack Extension Method

Virtual Crack Extension Method for Energy Release Rate Calculations in Flawed Thin Shell Structures

1987 ◽  
Vol 109 (1) ◽  
pp. 101-107 ◽  
Author(s):  
P. LeFort ◽  
H. G. deLorenzi ◽  
V. Kumar ◽  
M. D. German
Keyword(s):  
Finite Element Analysis ◽  
Energy Release Rate ◽  
Energy Release ◽  
Release Rate ◽  
Thin Shell ◽  
Crack Extension ◽  
Element Analysis ◽  
Extension Method ◽  
Virtual Crack Extension ◽  
Virtual Crack Extension Method

The calculation of the energy release rate, G, by the virtual crack extension method has been used extensively in the literature over the last few years. A formulation and implementation of the energy release rate for use with 8 and 9-noded isoparametric thin shell elements is described in this paper. The representation used in the paper allows the calculation of G either as an integral part of a finite element analysis or separately in a postprocessing program using the stress and strain data from a finite element analysis as input. The results presented in the paper are compared with those published in the literature for several elastic as well as elastic-plastic crack problems.

scholarly journals Computation of energy release rate for interfacial crack in orthotropic bimaterials

2021 ◽  
Vol 37 (3) ◽  
Author(s):  
S. Bouziane ◽  
H. Bouzerd
Keyword(s):  
Finite Element ◽  
Energy Release Rate ◽  
Energy Release ◽  
Release Rate ◽  
Numerical Models ◽  
Mixed Finite Element ◽  
Interfacial Crack ◽  
Orthotropic Materials ◽  
Virtual Crack Extension ◽  
Virtual Crack Extension Method

The interfacial crack in bimaterials is a very interesting problem for composite materials and which has received particular attention from several researchers. In this study, we will propose a numerical modeling of the interfacial crack between two orthotropic materials using a special mixed finite element. For the calculation of the energy release rate, a technique, based on the association of the present mixed finite element with the virtual crack extension method, was used. The numerical model proposed, in this work, was used to study a problem of interfacial crack in bimaterials. Two cases were treated: isotropic and orthotropic bimaterials. The results obtained, using the present element, were compared with the values of the analytical solution and other numerical models found in the literature.

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