Results 11 to 20 of about 4,588 (232)

Discrete and Phase Field Methods for Linear Elastic Fracture Mechanics: A Comparative Study and State-of-the-Art Review

open access: yesApplied Sciences, 2019
Three alternative approaches, namely the extended/generalized finite element method (XFEM/GFEM), the scaled boundary finite element method (SBFEM) and phase field methods, are surveyed and compared in the context of linear elastic fracture mechanics ...
Adrian Egger   +6 more
doaj   +3 more sources

Simulation of Mode I Interlaminar Damage of a GFRP Composite Using Cohesive Laws in the Framework of the Equivalent LEFM R-Curve and an Optimised Algorithm

open access: yesPolymers, 2021
This paper is focused on mode I delimitation of a unidirectional glass fibre reinforced polymer (GFRP) composite. The aim is to propose an accurate and simple characterisation of three cohesive zone models (CZM)—bilinear, trilinear, and potential—from ...
L. Torres   +3 more
semanticscholar   +2 more sources

Working life estimate of the tubular T-joint by application of the LEFM concept [PDF]

open access: yes, 2018
The crack growth in tubular joints usually occurs along the weld’s toe. That is the point where the chord and brace intersect. The semi-elliptical crack appears in this area from the initial flaw that was created during the welding.
J. Djoković   +4 more
semanticscholar   +2 more sources

Bilinear softening parameters and equivalent LEFM R-curve in quasibrittle failure [PDF]

open access: yes, 2010
For composites and adhesive joints, the determination of the cohesive zone parameters from Double Cantilever Beam specimens loaded with pure moments is now well established and documented.
S. Morel   +4 more
semanticscholar   +2 more sources

Multiple crack propagation by DBEM in a riveted butt-joint: a simplified bidimensional approach [PDF]

open access: yesFracture and Structural Integrity, 2016
A Multi-Site Damage (MSD) crack growth simulation is presented, carried out by means of Dual Boundary Element Method (DBEM), in a two-dimensional analysis of a cracked butt-joint made of aluminium 2024 T3.
R. Citarella
doaj   +2 more sources

Fatigue life estimation based on LEFM and the study of initial parameters

open access: yes, 2022
The fatigue strength of structural details are usually based on nominal stresses and S-N curves given in the design standards. Using S-N curves to analyse the fatigue strength often gives reliable estimates of the fatigue strength. However, the S-N curves are limited to similar structural geometries and loading conditions as performed during the ...
Skoglund, Oskar
openaire   +2 more sources

Uniform fatigue damage tolerance assessment for additively manufactured and cast Al-Si alloys: size and mean stress effects

open access: yesAdditive Manufacturing Letters, 2022
The near-net-shape manufacturing in additive manufactured and cast of Al-Si alloys results in a heterogeneous solidification and cooling of the parts, leading to significant gradients in microstructural and defect features as well as deformation behavior.
Jochen Tenkamp   +3 more
doaj   +1 more source

Sharp contrasts in observed and modeled crevasse patterns at Greenland's marine terminating glaciers [PDF]

open access: yesThe Cryosphere, 2020
Crevasses are affected by and affect both the stresses and the surface mass balance of glaciers. These effects are brought on through potentially important controls on meltwater routing, glacier viscosity, and iceberg calving, yet there are few direct ...
E. M. Enderlin, T. C. Bartholomaus
doaj   +1 more source

KIc Determination of a 7075 T6 Aluminum Alloy by Critical Distances Theory and LEFM [PDF]

open access: yesMaterials Research, 2023
The Critical Distances Theory has been used in engineering field as a less expensive method to predict failures. Thus, this research aims to evaluate its methods in other materials, like the aluminum alloy 7075 T6, and notches. Two different notches were
Larissa Gomes Simão   +1 more
doaj   +1 more source

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