Results 121 to 130 of about 654 (174)

Influence of Spray Angle on Scratch Resistance of Cold-Sprayed SS316L Deposits. [PDF]

Materials (Basel)
Kumar A, Vostrak M, Houdkova S.
europepmc   +1 more source

Mesh variational r-adaptivity for sharp modeling of brittle fracture

Dony G, Moës N, Remacle J.
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A New Way for Polymer Characterisation Using a Combined Approach LEFM – Plastic Zone Corrected LEFM

European Structural Integrity Society, 2003
ABSTRACT Toughness quantification of polymers is still an open issue, since no unique fracture mechanics method is able to provide intrinsic crack propagation resistance values over the whole range of material behaviours from brittle to ductile. A sensitive way to characterise the mechanical performance of these materials, exemplified with rubber ...
exaly   +2 more sources

Evaluation of the amount of crack growth in 2D LEFM problems

Engineering Fracture Mechanics, 2004
This work proposes an algorithm for the evaluation of the amount of crack growth in two-dimensional problems of linear elastic fracture mechanics. The method is based on the energetic formulation of the coupled displacement-crack propagation problem defined by Nguyen et al. in 1990 in order to study the stability of crack growth in elastic fracture. To
Stefania Fortino, Antonio Bilotta
exaly   +3 more sources

Apparent fracture toughness for LEFM applications in hydraulic fracture modeling

Engineering Fracture Mechanics, 2020
Abstract Linear Elastic Fracture Mechanics (LEFM) is a widely applied theory to numerically simulate hydraulic fracture initiation and propagation in the subsurface. However, LEFM with the typical fracture toughness measured from unconfined laboratory tests does not apply to hydraulic fracturing applications under subsurface conditions because the ...
Jon Olson, Richard Schultz, Hunjoo P Lee   +2 more
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Three‐dimensional integration strategies of singular functions introduced by the XFEM in the LEFM

International Journal for Numerical Methods in Engineering, 2012
SUMMARYThe use of the extended finite element method in the scope of linear elastic fracture mechanics induces the integration of singular functions in terms of the stiffness matrix and in the computation of stress intensity factors using the interaction integral method.
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Applicability of LEFM to Coarse-Grained Ceramics and Composites

Key Engineering Materials, 1997
Athanasios D. Papargyris, A.I. Botis
exaly   +2 more sources

Investigation on Stress and Strain Singularity in LEFM

Key Engineering Materials, 2006
Stress and strain singularity at crack-tip is the characteristic of Linear Elastic Fracture Mechanics (LEFM). However, the stress, strain and strain energy at crack-tip may be infinite promoting conflicts with linear elastic hypothesis. It is indicated that the geometrical nonlinear near the crack-tip should not be neglected for linear elastic ...
Zheng Yang, Wanlin Guo, Quan Liang Liu
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Avalanche Mechanics: Lefm vs. Gradient Model

2008
In this study the initiation of avalanches by failure of the interface between the show slab and the underlying bedrock is considered. A pre-existing shear crack is assumed at the interface, in analogy with the classical work of Palmer and Rice [1] on shear bands in over-consolidated clay.
A. KOSTANTINIDIS, Pugno, Nicola, P. CORNETTI, E. AIFANTIS   +3 more
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LEFM Applications to Concrete Gravity Dams

Journal of Engineering Mechanics, 1997
The evaluation of the safety factor of old dams under higher flood levels in the last few years has been investigated under the assumptions of fracture mechanics. The extensive need for research in this field was recognized by the U.S. Army Corps of Engineers that now requires a fracture mechanics investigation prior to the rehabilitation of cracked ...
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