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Williams Expansion Terms and their Importance for Accurate Stress Field Description in Specimens with a Crack [PDF]

open access: yesTransactions of the VŠB-Technical University of Ostrava, Mechanical Series, 2013
The paper deals with an analysis of the stress and displacement fields in various cracked specimens (loaded in mode I as well as in mode II). The main goal is to determine an accurate approximation of the near-crack-tip fields which can be subsequently
Lucie MALÍKOVÁ, Václav VESELÝ
doaj   +1 more source

Digital processing of the results of optoelectronic measurements. The photoelasticity method and its application for determination of coefficients of the multiparameter asymptotic Williams expansion of the stress field

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2017
The study is aimed at experimental and computational determination of the coefficients in crack tip asymptotic expansions for a wide class of specimens under mixed mode loading conditions.
Larisa V Stepanova, Vadim S Dolgich
doaj   +1 more source

NOTCH3 as a modulator of vascular disease: a target in elastin deficiency and arterial pathologies

open access: yesThe Journal of Clinical Investigation, 2022
During blood vessel disease, vascular smooth muscle cell (VSMC) expansion and interaction with the matrix trigger changes in gene expression and phenotype. In this issue of the JCI, Dave et al.
Kimberly Malka, Lucy Liaw
doaj   +1 more source

About Measuring the Stress Intensity Factor of Cracks in Curved, Brittle Shells

open access: yesFracture and Structural Integrity
Most techniques of measuring the stress intensity factor (SIF) in the cracking process assume a crack in a planar medium. Currently, there is no effective approach for curved brittle shells, particularly for non-developable cases, i.e., shapes with non ...
Andras A. Sipos, Siwen Cao
doaj   +3 more sources

Fixed point theorem utilizing operators and functionals

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2012
This paper presents a fixed point theorem utilizing operators and functionals in the spirit of the original Leggett-Williams fixed point theorem which is void of any invariance-like conditions.
Douglas Anderson   +3 more
doaj   +1 more source

Mass-Conserved Solution to the Ffowcs-Williams and Hawkings Equation for Compact Source Regions

open access: yesAerospace, 2023
A mass-conserved formulation for the Ffowcs-Williams–Hawkings (FW–H) integral is proposed to suppress contributions of spurious mass flux to the far-field sound at very low Mach numbers.
Zhiteng Zhou   +3 more
doaj   +1 more source

Multiple Positive Solutions for a System of Fractional Order BVP with p-Laplacian Operators and Parameters

open access: yesAxioms, 2023
In this paper, we investigate the existence of positive solutions to a system of fractional differential equations that include the (r1,r2,r3)-Laplacian operator, three-point boundary conditions, and various fractional derivatives.
Abdullah Ali H. Ahmadini   +2 more
doaj   +1 more source

Review of the Influence of non-singular higher order terms on the stress field of thin welded lap joints and small inclined cracks in plates [PDF]

open access: yesFracture and Structural Integrity, 2017
In stress analysis of cracked plates, alongside the stress intensity factor which quantifies the singular stress component perpendicular to the crack plane, the role played in crack growth by the constant term parallel to the crack plane, called the T ...
F. Berto   +3 more
doaj   +2 more sources

Multiple positive solutions for nonlinear high-order Riemann–Liouville fractional differential equations boundary value problems with p-Laplacian operator

open access: yesBoundary Value Problems, 2020
In this paper, we study the existence of multiple positive solutions for boundary value problems of high-order Riemann–Liouville fractional differential equations involving the p-Laplacian operator.
Bibo Zhou   +3 more
doaj   +1 more source

Predição de ganho genético com diferentes índices de seleção no milho pipoca CMS-43 Prediction of genetic gain with different selection indexes in popcorn CMS-43

open access: yesPesquisa Agropecuária Brasileira, 2002
O melhoramento simultâneo da capacidade de expansão e da produtividade no milho pipoca são dificultados por causa da correlação negativa entre as duas características, mas o uso de índices de seleção permite contornar essa dificuldade. Em 1997/1998 foram
Maria José Granate   +2 more
doaj   +1 more source

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