Results 21 to 30 of about 478,588 (265)

Determination of the critical load and energy release rate in mode II delamination using a meshfree method

open access: yesScience and Engineering of Composite Materials, 2014
Simulation of fracture by using numerical methods is important to treat geometries that change in time. In this study, both numerical and experimental investigations are presented for the delamination under mode II loading, detailing the derivation of ...
Pekbey Yeliz   +3 more
doaj   +1 more source

Fatigue Crack Propagation Study of Bridge Steel Q345qD Based on XFEM Considering the Influence of the Stress Ratio

open access: yesApplied Sciences, 2022
In the past, fatigue cracks have appeared in the orthotropic steel decks of bridges shortly after they opened to traffic. Previous studies have shown that high tensile welding residual stress exists in welded joints of steel bridges, which significantly ...
Baoya Cao   +4 more
doaj   +1 more source

The surface-forming energy release rate versus the local energy release rate

open access: yes, 2016
This paper identifies two ways to extract the energy (or power) flowing into a crack tip during propagation based on the power balance of areas enclosed by a stationary contour and a comoving contour. It is very interesting to find a contradiction that two corresponding energy release rates (ERRs), a surface-forming ERR and a local ERR, are different ...
Xiao, Si   +4 more
openaire   +2 more sources

Computation of Energy Release Rates for a Nearly Circular Crack [PDF]

open access: yesMathematical Problems in Engineering, 2011
This paper deals with a nearly circular crack, Ω in the plane elasticity. The problem of finding the resulting shear stress can be formulated as a hypersingular integral equation over a considered domain, Ω and it is then transformed into a similar equation over a circular region, D, using conformal mapping.
Nik Mohd Asri Nik Long   +2 more
openaire   +2 more sources

Effects of HfC Particles on Crack Initiation and Propagation Behavior of WC/Co Composites

open access: yesXibei Gongye Daxue Xuebao, 2019
Tungsten carbide composites were prepared by cold-pressing and hot-pressing sintering; fracture toughness and bending strength of the specimens were tested. The microstructures of HfC/WC/Co composites were observed with the SEM.

doaj   +1 more source

Nanobeams with Internal Discontinuities: A Local/Nonlocal Approach

open access: yesNanomaterials, 2021
The aim of the present work is to extend the two-phase local/nonlocal stress-driven integral model (SDM) to the case of nanobeams with internal discontinuities: as a matter of fact, the original formulation avoids the presence of any discontinuities ...
Daniela Scorza   +2 more
doaj   +1 more source

Equilibrium states and stability of pre-tensioned adhesive tapes

open access: yesBeilstein Journal of Nanotechnology, 2014
In the present paper we propose a generalization of the model developed in Afferrante, L.; Carbone, G.; Demelio, G.; Pugno, N. Tribol. Lett. 2013, 52, 439–447 to take into account the effect of the pre-tension in the tape.
Carmine Putignano   +3 more
doaj   +1 more source

Analytical Solution for a 1D Hexagonal Quasicrystal Strip with Two Collinear Mode-III Cracks Perpendicular to the Strip Boundaries

open access: yesCrystals, 2023
We considered the problem of determining the singular elastic fields in a one-dimensional (1D) hexagonal quasicrystal strip containing two collinear cracks perpendicular to the strip boundaries under antiplane shear loading. The Fourier series method was
Jing Yu, Junhong Guo
doaj   +1 more source

Research on the energy evolution characteristics and the failure intensity of rocks

open access: yesInternational Journal of Mining Science and Technology, 2020
It is pretty challenging and difficult to quantitatively evaluate the intensity of dynamic disasters in deep mining engineering. Based on the uniaxial loading-unloading experiments for five types of rocks, this paper investigated the energy evolution ...
Lin Gao   +3 more
doaj   +1 more source

The Relationship Between Physical Activity and Left Ventricular Remodeling in Childhood Cancer Survivors Treated With Anthracyclines: A Cross‐Sectional Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Anthracycline‐related cardiac remodeling precedes heart failure in childhood cancer survivors. The objectives of this study were to determine the relationships between patient‐specific factors, moderate‐to‐vigorous physical activity (MVPA), and cardiac remodeling.
Hari K. Narayan   +15 more
wiley   +1 more source

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