Results 41 to 50 of about 22,686,556 (351)

Temperature Dependence of the Fracture Toughness JC of Random Fibrous Material

open access: yesApplied Sciences, 2020
The temperature dependence of the fracture toughness JC of a three-dimensional (3D) random fibrous (RF) material, with a porosity of 87% along the through-the-thickness (TTT) direction, was investigated using experiments and the finite element method ...
Datao Li, Yan Li, Wenshan Yu
doaj   +1 more source

Exact results with the J-integral applied to free-boundary flows [PDF]

open access: yes, 2002
We apply the J-integral to free-boundary flows in a channel geometry such as viscous fingering or blob injection in Hele-Shaw cells, void propagation in electromigration, and injection of air bubbles into inviscid liquids.
Ben Amar, Martine, Rice, James R.
core   +1 more source

Isolated bidirectional DC-DC Converter: A topological review

open access: yese-Prime: Advances in Electrical Engineering, Electronics and Energy
Bidirectional DC-DC converters (BDCs) are certainly an important power electronic converter for managing bidirectional power flow in various applications.
Mohammad Aslam Alam   +2 more
doaj   +1 more source

Improvement of a Cycle J Integral for CT Specimens [PDF]

open access: yesJournal of Engineering for Gas Turbines and Power, 1985
The cycle J integral formula for CT specimens has been improved as follows: ΔJ=(2/Bb)(α1•U + α2•ΔP•Δδ) + (2/Bb)Ue−1.2025a/w + 0.6233 for 0.3≤a/w≤0.53; ΔJ=(2/Bb)(α1•U + α2•ΔP•Δδ) + (2/Bb)Ue−0.02 sin[(π/0.23)(a/w−0.53)] for 0.53<a/w<0.95. This formula is applicable to the fatigue crack propagation range of 0.3≤a/w<0.95.
Liu Shao-Lun, Xie Ji-Zhou
openaire   +1 more source

A Numerical Analysis of Selected Elastic-Plastic Fracture Parameters for DEN(T) Plates under Plane Strain Conditions

open access: yesInternational Journal of Applied Mechanics and Engineering, 2017
This paper provides a numerical analysis of selected parameters of fracture mechanics for double-edge notched specimens in tension, DEN(T), under plane strain conditions. The analysis was performed using the elastic-plastic material model.
M. Graba
doaj   +1 more source

Some experimental observations of crack-tip mechanics with displacement data [PDF]

open access: yes, 2015
Estudio de la mecánica en el vértice de la grieta mediante datos de desplazamiento.In the past two decades, crack-tip mechanics has been increasingly studied with full-field techniques.
Lopez-Crespo, Pablo   +3 more
core   +4 more sources

Stability of the coexistent superconducting-nematic phase under the presence of intersite interactions [PDF]

open access: yes, 2017
We analyze the effect of intersite-interaction terms on the stability of the coexisting superconucting-nematic phase (SC+N) within the extended Hubbard and $t$-$J$-$U$ models on the square lattice.
Spałek, Józef, Zegrodnik, Michał
core   +2 more sources

On relation between J-integral and heat energy dissipation at the crack tip in stainless steel specimens

open access: yesFracture and Structural Integrity, 2019
In this paper, an experimental procedure to evaluate the elastic-plastic J-integral at the tip of a fatigue crack is presented. According to this new approach, the elastic component of the J-integral is derived from Thermoelastic Stress Analysis, while ...
Giovanni Meneghetti   +2 more
doaj   +3 more sources

ENERGY INVARIANTS IN THEORY OF ELASTOPLASTIC CRACKS

open access: yesНаука и техника, 2017
The paper considers a problem on a rectilinear crack in hardening elastoplastic material with load which is applied at infinity under plane-strain deformation conditions.
M. A. Hundzina
doaj   +1 more source

Three-dimensional crack analyses under thermal stress field by XFEM using only the Heaviside step function

open access: yesMechanical Engineering Journal, 2020
A three-dimensional crack analysis method based on XFEM using only the Heaviside step function was applied to heat transfer and subsequent thermal stress analyses of cracked structures. The proposed method employs tip elements to discretize the weak form
Toshio NAGASHIMA
doaj   +1 more source

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