scholarly journals Parametric study of the conditions of supershear crack propagation in brittle materials

2015 ◽  
Author(s):  
E. V. Shilko ◽  
S. G. Psakhie ◽  
V. L. Popov
Keyword(s):  
Crack Propagation ◽  
Parametric Study ◽  
Brittle Materials

Modeling of Crack Propagation Behavior of High Density Polyethylene by Using Crack Layer Theory: Parametric Study

2015 ◽  
Author(s):  
Jung-Wook Wee ◽  
Byoung-Ho Choi
Keyword(s):  
Crack Propagation ◽  
Parametric Study ◽  
High Density Polyethylene ◽  
Creep Condition ◽  
Growth Behavior ◽  
High Density ◽  
Crack Growth Behavior ◽  
Material Parameters ◽  
Input Parameters ◽  
Crack Layer

Creep and fatigue slow crack propagation of engineering thermoplastics display continuous or discontinuous manner depending on the test condition. It could be simulated accurately by use of crack layer theory with theoretical backgrounds. But many input parameters complexify the use of CL theory. Thus the investigation on the effect of material parameters on the CL growth is necessary for the comprehensive understanding. In this paper, a parametric study of CL growth simulation of single edge notched tension specimen in creep condition was performed. Several material parameters were varied so that the effect of input parameters on the CL growth behavior could be understood. Total lifetime is used to figure out the effect of the parameters quantitatively. This study would be beneficial to understand the effect of material parameters on the slow crack growth behavior of high density polyethylene.

scholarly journals A Proper Generalized Decomposition (PGD) approach to crack propagation in brittle materials: with application to random field material properties

2019 ◽  
Vol 65 (2) ◽  
pp. 451-473 ◽  
Author(s):  
Hasini Garikapati ◽  
Sergio Zlotnik ◽  
Pedro Díez ◽  
Clemens V. Verhoosel ◽  
E. Harald van Brummelen
Keyword(s):  
Crack Propagation ◽  
Material Properties ◽  
Computational Cost ◽  
Brittle Materials ◽  
Energy Criterion ◽  
Reduced Order Modeling ◽  
Proper Generalized Decomposition ◽  
Modeling Framework ◽  
Global Energy ◽  
Reduced Order

Abstract Understanding the failure of brittle heterogeneous materials is essential in many applications. Heterogeneities in material properties are frequently modeled through random fields, which typically induces the need to solve finite element problems for a large number of realizations. In this context, we make use of reduced order modeling to solve these problems at an affordable computational cost. This paper proposes a reduced order modeling framework to predict crack propagation in brittle materials with random heterogeneities. The framework is based on a combination of the Proper Generalized Decomposition (PGD) method with Griffith’s global energy criterion. The PGD framework provides an explicit parametric solution for the physical response of the system. We illustrate that a non-intrusive sampling-based technique can be applied as a post-processing operation on the explicit solution provided by PGD. We first validate the framework using a global energy approach on a deterministic two-dimensional linear elastic fracture mechanics benchmark. Subsequently, we apply the reduced order modeling approach to a stochastic fracture propagation problem.

Influence of micro-modulus functions on peridynamics simulation of crack propagation and branching in brittle materials

2019 ◽  
Vol 216 ◽  
pp. 106498 ◽  
Author(s):  
Zhiyong Chen ◽  
J. Woody Ju ◽  
Guoshao Su ◽  
Xiaohua Huang ◽  
Shuang Li ◽  
...  
Keyword(s):  
Crack Propagation ◽  
Brittle Materials

A MODEL FOR CRACK PROPAGATION BASED ON VISCOUS APPROXIMATION

2011 ◽  
Vol 21 (10) ◽  
pp. 2019-2047 ◽  
Author(s):  
GIULIANO LAZZARONI ◽  
RODICA TOADER
Keyword(s):  
Crack Propagation ◽  
Energy Release Rate ◽  
Energy Release ◽  
Release Rate ◽  
A Priori ◽  
Brittle Materials ◽  
Continuity Property ◽  
Vanishing Viscosity ◽  
Hausdorff Convergence ◽  
Linearized Elasticity

In the setting of antiplane linearized elasticity, we show the existence of quasistatic evolutions of cracks in brittle materials by using a vanishing viscosity approach, thus taking into account local minimization. The main feature of our model is that the path followed by the crack need not be prescribed a priori: indeed, it is found as the limit (in the sense of Hausdorff convergence) of curves obtained by an incremental procedure. The result is based on a continuity property for the energy release rate in a suitable class of admissible cracks.

A local remeshing procedure to simulate crack propagation in quasi‐brittle materials

2012 ◽  
Vol 29 (2) ◽  
pp. 125-143 ◽  
Author(s):  
Juha Kuutti ◽  
Kari Kolari
Keyword(s):  
Crack Propagation ◽  
Brittle Materials
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