Numerical simulation of multiple crack growth in brittle materials with adaptive remeshing

2010 ◽  
Vol 85 (8) ◽  
pp. 1017-1048 ◽  
Author(s):  
H. Azadi ◽  
A. R. Khoei
Keyword(s):  
Numerical Simulation ◽  
Crack Growth ◽  
Brittle Materials ◽  
Multiple Crack ◽  
Adaptive Remeshing

Numerical Simulation of Fatigue Crack Growth for Curved Cracks Emanating from Fastener Holes in Sheets by the MVCCI Method

2006 ◽  
Vol 324-325 ◽  
pp. 863-866
Author(s):  
Holger Theilig ◽  
M. Goth ◽  
Michael Wünsche
Keyword(s):  
Numerical Simulation ◽  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Plane Stress ◽  
Mixed Mode ◽  
Mixed Mode Loading ◽  
Multiple Crack ◽  
2D Structure ◽  
Predictor Corrector

The paper presents the results of a continued study of curved fatigue crack growth in a multiple arbitrarily pre-cracked isotropic sheet under plane stress loading. The predictor-corrector method (PCM) was extended in order to analyse the growth of multiple crack systems in a finite 2D structure. Together with the recently proposed improved modified virtual crack closure integral (MVCCI) method we can obtain accurate SIF values also for interacting cracks, and furthermore we can simulate fatigue crack growth of multiple crack systems in plane sheets under proportional mixed mode loading conditions. As a result, the program PCCS-2D is written to run within ANSYS to simulate interacting curved cracks. In order to check the accuracy and efficiency of the proposed method several example problems are solved. Especially curved cracks emanating from loaded fastener holes in sheets are analysed.

A method for multiple crack growth in brittle materials without remeshing

2004 ◽  
Vol 61 (10) ◽  
pp. 1741-1770 ◽  
Author(s):  
É. Budyn ◽  
G. Zi ◽  
N. Moës ◽  
T. Belytschko
Keyword(s):  
Crack Growth ◽  
Brittle Materials ◽  
Multiple Crack

A Numerical Simulation of the Crack Growth in a Smooth CT Specimen

1997 ◽  
Vol 145-149 ◽  
pp. 179-184 ◽  
Author(s):  
W.-Y. Yan ◽  
G.-X. Shan ◽  
Otmar Kolednik ◽  
Franz Dieter Fischer
Keyword(s):  
Numerical Simulation ◽  
Crack Growth

A macroscopic theory of microcrack growth in brittle materials

1991 ◽  
Vol 335 (1639) ◽  
pp. 455-485 ◽  
Keyword(s):  
Crack Growth ◽  
Brittle Materials ◽  
Macroscopic Theory ◽  
Rate Of Increase ◽  
Inelastic Behaviour ◽  
Constitutive Response ◽  
Macroscopic Plasticity ◽  
Microcrack Growth ◽  
Vector Valued

This paper is concerned with the development of a macroscopic theory of crack growth in fairly brittle materials. Average characteristics of the cracks are described in terms of an additional vector-valued variable in the macroscopic theory, which is determined by an additional momentum-like balance law associated with the rate of increase of the area of the cracks and includes the effects of forces maintaining the crack growth and the inertia of microscopic particles surrounding the cracks. The basic developments represent an idealized characterization of inelastic behaviour in the presence of crack growth, which accounts for energy dissipation without explicit use of macroscopic plasticity effects. A physically plausible constraint on the rate of crack growth is adopted to simplify the theory. To ensure that the results of the theory are physically reasonable, the constitutive response of the dependent variables are significantly restricted by consideration both of the energetic effects and of the microscopic processes that give rise to crack growth. These constitutive developments are in conformity with many of the standard results and observations reported in the literature on fracture mechanics. The predictive nature of the theory is illustrated with reference to two simple examples concerning uniform extensive and compressive straining.

Interactive effect of multiple crack growth on fatigue

1995 ◽  
Vol 23 (3) ◽  
pp. 219-233 ◽  
Author(s):  
A. Martín-Meizoso ◽  
J.M. Martínez-Esnaola ◽  
M. Fuentes-Pérez
Keyword(s):  
Crack Growth ◽  
Interactive Effect ◽  
Multiple Crack
Sign in / Sign up

Export Citation Format

Share Document