Results 31 to 40 of about 96,341 (238)

THE ELASTIC BUCKLING BEHAVIOR OF (5056-H18)ALALLOY COLUMNS UNDER VARIABLE LOAD

open access: yesIraqi Journal for Mechanical and Materials Engineering, 2019
The research deals the evaluation of buckling behavior for 5056-H18 Al alloy columns under variable loads and studies the effect of initial deflection on the critical buckling load.
Ali Y Khenyab   +2 more
doaj   +1 more source

UNUSUAL FORMULAE FOR THE EULER CHARACTERISTIC [PDF]

open access: yesJournal of Knot Theory and Its Ramifications, 2002
Everyone knows that the Euler characteristic of a combinatorial manifold is given by the alternating sum of its numbers of simplices. It is shown that there are other linear combinations of the numbers of simplices which are combinatorial invariants, but that all such invariants are multiples of the Euler characteristic.
openaire   +3 more sources

Topological optimization applied to a variable density and conductivity model of pollution in porous media

open access: yesEngineering Reports, Volume 5, Issue 1, January 2023., 2023
This article deals with modeling and numerical study of pollutants transfer in porous media by topological optimization. Indeed we perform the modeling of pollution in porous media in non‐permanent cases by assuming the variability or not of some parameters such as the conductivity and the density.
Mouhamadou Baidy Dia   +2 more
wiley   +1 more source

Euler-Maclaurin Formula [PDF]

open access: yes, 2002
In q-calculus, the Jackson formula (19.2) provides a way to compute explicitly a q-antiderivative of any function. Recall that the Jackson formula was deduced formally using operators. We will do a similar thing for the h-antiderivative in this chapter.
Pokman Cheung, Victor G. Kac
openaire   +2 more sources

3D MODELING OF BIOLOGICAL WASTEWATER TREATMENT IN AERATION TANK

open access: yesNauka ta progres transportu, 2020
Purpose. The main purpose of the article is to develop a 3D CFD model for modeling the process of biological wastewater treatment in an aeration tank. Methodology. For mathematical modeling of the process of biological wastewater treatment in the reactor,
M. M. Biliaiev   +5 more
doaj   +1 more source

The Euler's formula and root formula of Clifford Algebra Cl2 [PDF]

open access: yesarXiv, 2022
In this paper, we express Euler's formula and De Moivre's formula for Clifford algebra Cl2 and find nth roots of an element in Clifford algebra Cl2.
arxiv  

An immersed boundary vector potential‐vorticity meshless solver of the incompressible Navier–Stokes equation

open access: yesInternational Journal for Numerical Methods in Fluids, Volume 95, Issue 1, Page 143-175, January 2023., 2023
We present a new strong‐form meshless solver combined with the boundary condition‐enforced immersed boundary method for the numerical solution of the nonstationary, incompressible, viscous Navier–Stokes equations in their stream function‐vorticity (in 2D) and vector potential‐vorticity (in 3D) formulation.
George C. Bourantas   +6 more
wiley   +1 more source

Stability of axially loaded tapered columns/Centriškai gniuždomų trapecinių kolonų stabilumas

open access: yesJournal of Civil Engineering and Management, 2000
In this paper, theoretical analysis of tapered column's bearing capacity is presented. A slender axially loaded column loses stability, when it achieves critical load (1). Critical load for uniform column can be calculated using L. Euler's formula (3).
Vaidotas Špalas   +1 more
doaj   +1 more source

Buckling in columns. Solution of the indeterminations of Euler's theory and derivation of an equation for inelastic buckling

open access: yesResults in Engineering, 2023
Buckling in columns under central load has always been a complex problem and until now remains unclear. This work consists of two parts. In the first, a theory is presented to solve the indeterminations of Euler's theory, such as: Moment, slope ...
Manuel Antonio Ramírez Márquez
doaj  

On Euler’s decomposition formula for $$q$$ q MZVs [PDF]

open access: yesThe Ramanujan Journal, 2014
In this short and elementary note we derive a q-generalization of Euler's decomposition formula for the qMZVs recently introduced by Y. Ohno, J. Okuda, and W. Zudilin. This answers a question posed by these authors in [10].
Medina, Jaime Castillo   +2 more
openaire   +7 more sources

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