Results 261 to 270 of about 14,215 (312)

High Performance Multiscale Simulation or Crack Propagation

2006 International Conference on Parallel Processing Workshops (ICPPW'06), 2006
We present a parallel implementation of a multi-scale coupling method for material simulations. We describe the models used for our application and we focus on the design of our numerical simulation, which is based on a coupling involving a parallel code for molecular dynamics and a parallel finite element code for continuum mechanics.
Guillaume Anciaux, Olivier Coulaud, Jean Roman   +2 more
openaire   +1 more source

Simulation of Fatigue Crack Propagation in Railway Axles

Journal of ASTM International, 2005
Abstract The need for optimizing inspection intervals of wheelsets has led to increasing attention to those of railway axles. This paper addresses this issue by comparing predictions obtained by an EPFM model and two widely used fatigue crack growth softwares (namely AFGROW and NASGRO) with a set of propagation data derived from small ...
BERETTA, STEFANO, CARBONI, MICHELE
openaire   +2 more sources

Crack Propagation and Simulation of Thermal Fatigue

Applied Mechanics and Materials, 2012
In this paper, the thermal fatigue damage phenomenon in the comprehensive temperature environment is studied by means of thermal fatigue damage mechanics and FEM technology, the thermal-stress analysis modal under the comprehensive thermodynamic boundary conditions is established, the regularities of distribution of temperature fields, thermal stress ...
Hui Yu, Xin Liang Zang, Li Gang Liu
openaire   +1 more source

Meshfree Simulations of Ductile Crack Propagations

International Journal for Computational Methods in Engineering Science and Mechanics, 2005
In this work, a meshfree method is used to simulate ductile crack growth and propagation under finite deformation and large scale yielding conditions. A so-called parametric visibility condition and its related particle splitting procedure have been developed to automatically adapt the evolving strong continuity or fracture configuration due to an ...
Shaofan Li, Cerup B. Simonsen
openaire   +1 more source

A Computer Simulation of the Crack Propagation Process

Molecular Simulation, 1991
Abstract The crack propagation process is studied by Monte-Carlo simulation for a two-dimensional triangular lattice with the Lennard-Jones potential and a surface notch. Nucleation of dislocations at the crack tip and their propagation past the crack tip region are found to precede the crack growth in the present case, this result is in close ...
Keisuke Hata, Tadayoshi Takai, Kazumi Nishioka   +2 more
openaire   +1 more source

Simulation of crack propagation and failure of concrete

Matériaux et Constructions, 1981
First of all the heterogeneous structure of concrete is described in terms of a multi-level system. To take different effects of crack propagation and crack arresting into consideration, four different levels have been introduced. Conditions for crack propagation in the porous structure of hardened cement paste and in a matrix with inclusions are ...
Y. B. Zaitsev, F. H. Wittmann
openaire   +1 more source

Simulation of Crack Propagation

2014
We shall consider the simulation-based fracture control design. It is well known that the simulation of the formation of brittle or fatigue cracks is essential for the precise evaluation of fracture modes and fracture processes, so that several numerical simulation systems could be developed based on the finite element method, meshless method, and/or ...
openaire   +1 more source

Molecular dynamic simulations of crack propagation

Journal of Physics and Chemistry of Solids, 1987
Abstract Molecular dynamic simulations of crack propagation are reviewed with emphasis on the investigations of the last 5 yr. The major part of the review is based on the work of the authors and their colleagues and covers the following main topics: the role of the interatomic potential, the local stresses at the crack tip, dymamic simulations with ...
G.J. Dienes, Arthur Paskin
openaire   +1 more source

Singularity-Element Simulation of Crack Propagation

1977
Finite-element simulations of rapid crack propagation are presented. An earlier analysis of a crack extending in an infinite body is reviewed, and an unsuccessful attempt to take advantage of a crack-tip singularity element is discussed. Plausible stress-intensity factors are obtained for both constant speed and accelerating cracks in finite sheets ...
JA Aberson, JM Anderson, WW King
openaire   +1 more source

Numerical simulation of rapid crack propagation in viscoplastic materials

Computers & Structures, 1996
Abstract A finite element model for the simulation of fast crack propagation under dynamic Mode I load conditions is developed. The principal tools are an enhanced strain formulation and a quasi-contact algorithm. Crack propagation is controlled by the implemented fracture criterion.
Leppin, C., Wriggers, P.
openaire   +2 more sources