Results 11 to 20 of about 1,765,804 (200)

Modification of the Euler Load for the Stiffened Compressive Members and Determination of the Optimal Stiffening for the Maximum Buckling Load [PDF]

open access: yesJournal of Rehabilitation in Civil Engineering, 2020
The potential of buckling in compressive members has been considered as a disadvantage when using steel members in the construction industry. In spite of the progress made in this regard, buckling is still considered as a challenge in the analysis and ...
Mahsa Karimian Sichani   +2 more
doaj   +1 more source

STABILITY OF A ELASTIC ORTHOTROPIC CANTILEVER PLATE

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2021
The paper studies the stability of a elastic orthotropic rectangular cantilever plate under compressive forces applied to the face opposite to the seal.
Sukhoterin Mikhail   +3 more
doaj   +1 more source

Trihedral lattice supports geometry optimization according to the stability criterion

open access: yesStructural Mechanics of Engineering Constructions and Buildings, 2022
The study proposes a technique for optimizing trihedral lattice tower structures from the condition of maximum critical load. Towers with a cross section of elements in the form of round pipes are considered.
Leysan Sh. Akhtyamova   +3 more
doaj   +1 more source

MECHANICAL BUCKLING ANALYSIS OF FUNCTIONALLY GRADED THICK CYLINDRICAL SHELLS USING THIRD ORDER SHEAR DEFORMATION THEORY [PDF]

open access: yesمجله مدل سازی در مهندسی, 2014
In this paper, buckling analysis of thick cylindrical shells using the third order shear deformation theory is carried out. The governing differential stability equations are obtained based on the second Piola-Kirchhoff tensor and are integrated across ...
Reza Akbari Alashti, Seysd Ali Ahmadi
doaj   +1 more source

Ecological Risks from Atmospheric Deposition of Nitrogen and Sulphur in Jack Pine forests of Northwestern Canada

open access: yesNitrogen, 2023
Chronic elevated nitrogen (N) deposition can have adverse effects on terrestrial ecosystems. For large areas of northern Canada distant from emissions sources, long-range atmospheric transport of N may impact plant species diversity, even at low ...
Nicole Vandinther, Julian Aherne
doaj   +1 more source

Critical issues for critical loads [PDF]

open access: yesProceedings of the National Academy of Sciences, 2012
In the United States and most other countries, primary air quality standards are designed to protect human health and are based on concentrations of pollutants in the air. However, from the perspective of ecosystem health, a more appropriate metric for the impacts of nitrogen (N) and sulfur (S) pollutants is the total atmospheric deposition (or “load,”
openaire   +2 more sources

An Analytical Symplectic Method for Buckling of Ring-Stiffened Graphene Platelet-Reinforced Composite Cylindrical Shells Subjected to Hydrostatic Pressure

open access: yesJournal of Marine Science and Engineering, 2022
In this paper, a novel analytical approach for the buckling of ring-stiffened porous graphene platelet-reinforced composite cylindrical shells under hydrostatic pressure is proposed under the framework of symplectic mechanics.
Zhanzhong Sun   +3 more
doaj   +1 more source

Identification of the elastic characteristics of a composite material based on the results of tests for the stability of panels made from it

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки, 2019
The problem of identifying the mechanical characteristics of a fibrous compo site material (FCM), from which cylindrical panels or pre-curved plates are made by superposition at an angle to the edge, has been considered. The problem has been solved using
R.A. Kayumov   +3 more
doaj   +1 more source

Analysis of forest soil acidification processes in the area of NP 'Kopaonik' [PDF]

open access: yesGlasnik Šumarskog Fakulteta: Univerzitet u Beogradu, 2009
In the last two decades, S and N critical loads have been used as indicators of ecosystem sustainability to soil acidification. The effect of acidification on the soil in forest ecosystems and their further development was the subject of numerous studies,
Kadović Ratko   +4 more
doaj   +1 more source

Reducing sensitivity to initial imperfections by changing bifurcation diagrams

open access: yesStructural Mechanics of Engineering Constructions and Buildings, 2023
An approach to the construction of equilibrium state diagrams is presented in order to reduce the sensitivity to initial imperfections for the problem of stability for reinforced plates (transfer of the bifurcation point corresponding to the wave ...
Gaik A. Manuylov   +2 more
doaj   +1 more source

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