Results 51 to 60 of about 1,085,535 (169)

Multiaxial fatigue analysis of notched components using combined critical plane and critical distance approach [PDF]

open access: yesInternational Journal of Mechanical Sciences, 2019
Abstract Combinations of geometric discontinuities and multiaxial loads appear commonly in engineering components, which raise both stress gradient and multiaxial stress states near the notch root. This work studies the combined critical plane approach with the theory of critical distance for fatigue analysis of notched components under multiaxial ...
Ding Liao, Shun-Peng Zhu, Guian Qian
openaire   +1 more source

Surface reconstruction and ferroelectricity in PbTiO$_3$ thin films

open access: yes, 2005
Surface and ferroelectric properties of PbTiO$_3$ thin films are investigated using an interatomic potential approach with parameters computed from first-principles calculations.
A. Munkholm   +6 more
core   +1 more source

Current quark mass effects on chiral phase transition of QCD in the improved ladder approximation [PDF]

open access: yes, 2001
Current quark mass effects on the chiral phase transition of QCD is studied in the improved ladder approximation. An infrared behavior of the gluon propagator is modified in terms of an effective running coupling.
A. Barducci   +71 more
core   +3 more sources

Zeros of the Partition Function and Pseudospinodals in Long-Range Ising Models

open access: yes, 2003
The relation between the zeros of the partition function and spinodal critical points in Ising models with long-range interactions is investigated. We find the spinodal is associated with the zeros of the partition function in four-dimensional complex ...
A.M. Ferrenberg   +18 more
core   +1 more source

Critical Plane Methodology for Intelligent Prediction of Fretting Fatigue Lifetime Based on Shear Strain Dynamics

open access: yesIEEE Access
An approach based on refined critical plane methodology to fretting fatigue lifetime prediction for structures was proposed. A new shear stress-strain interaction (SSI) critical plane equation is developed, predicated on shear strain energy for ...
Wen Zhou   +6 more
doaj   +1 more source

General Procedure for Formulation of Multiaxial Fatigue Failure Criteria in Frequency Domain [PDF]

open access: yesMATEC Web of Conferences, 2019
Fatigue life assessment under multiaxial loading conditions needs the use of multiaxial fatigue failure criteria. There are many formulations of such criteria which are usually divided in the groups of critical plane criteria and invariants based ...
Niesłony Adam   +2 more
doaj   +1 more source

Algebraic vortex liquid theory of a quantum antiferromagnet on the kagome lattice [PDF]

open access: yes, 2007
There is growing evidence from both experiment and numerical studies that low half-odd integer quantum spins on a kagome lattice with predominant antiferromagnetic near neighbor interactions do not order magnetically or break lattice symmetries even at ...
J. Alicea   +5 more
core   +2 more sources

Analytical Solution of Mixed Boundary Value Problems Using the Displacement Potential Approach for the Case of Plane Stress and Plane Strain Conditions

open access: yesInternational Journal of Applied Mechanics and Engineering, 2017
Two elastic plate problems made of duralumin are solved analytically using the displacement potential approach for the case of plane strain and plane stress conditions.
S.K. Deb Nath
doaj   +1 more source

Simple Model for the Variation of Superfluid Density with Zn Concentration in YBCO

open access: yes, 2001
We describe a simple model for calculating the zero-temperature superfluid density of Zn-doped YBa_2Cu_3O_{7-\delta} as a function of the fraction x of in-plane Cu atoms which are replaced by Zn. The basis of the calculation is a ``Swiss cheese'' picture
Annett   +42 more
core   +1 more source

Prediction of fatigue crack initiation life in railheads using finite element analysis

open access: yesAin Shams Engineering Journal, 2018
The current study introduced a numerical procedure to study fatigue crack initiation life in railheads. It was mainly performed by a three-dimensional (3D) explicit finite element (FE) model that accounts for bending stresses due to global dynamic ...
H.M. El-sayed   +3 more
doaj   +1 more source

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