Results 31 to 40 of about 8,791 (197)

Developing and Investigation the Numerical Efficiency of Modified Energy Method in Solid Mechanics With Geometric Nonlinearity and Bifurcation Points [PDF]

open access: yesJournal of Structural and Construction Engineering, 2021
Geometric nonlinear analyses are used in many structural problems, such as the determination of failure load, as well as the study of buckling mechanism.
Ahmad Razaghi   +2 more
doaj   +1 more source

Catastrophe Models for Cognitive Workload and Fatigue [PDF]

open access: yes, 2010
We reconceptualised several problems concerning the measurement of cognitive workload – fixed versus variable limits on channel capacity, work volume versus time pressure, adaptive strategies, resources demanded by tasks when performed simultaneously ...
Boeh, Henry   +3 more
core   +2 more sources

Nonlinear stability of thin FGM annular spherical segment in thermal environment

open access: yesVietnam Journal of Mechanics, 2015
The nonlinear stability of functionally graded material (FGM) annular spherical segment resting on elastic foundations in thermal environment is studied analytically.
Vu Thi Thuy Anh   +2 more
doaj   +1 more source

Elastocapillary instability under partial wetting conditions: bending versus buckling [PDF]

open access: yes, 2011
The elastocapillary instability of a flexible plate plunged in a liquid bath is analysed theoretically. We show that the plate can bend due to two separate destabilizing mechanisms, when the liquid is partially wetting the solid.
Andreotti, Bruno   +3 more
core   +4 more sources

Calculation of the Stability Index in Parameter-Dependent Calculus of Variations Problems: Buckling of a Twisted Elastic Strut [PDF]

open access: yes, 2002
We consider the problem of minimizing the energy of an inextensible elastic strut with length 1 subject to an imposed twist angle and force. In a standard calculus of variations approach, one first locates equilibria by solving the Euler--Lagrange ODE ...
Hoffman, Kathleen A.   +2 more
core   +2 more sources

Geometrically exact bifurcation and post-buckling analysis of the granular elastica

open access: yesInternational Journal of Non-Linear Mechanics, 2021
Abstract The nonlinear behaviour of a simply supported granular column loaded by an axial force is studied in this paper. The granular column is composed of rigid grains (discs) elastically connected by some shear and rotational springs. The in-plane buckling and post-buckling analysis in a geometrically exact framework is numerically investigated ...
Challamel, Noël, Kocsis, Attila
openaire   +2 more sources

Verification of the cylindrical tank shell stability using the stress design and the MNA-LBA procedure

open access: yesTechnical Transactions, 2021
The article presents the course and results of the procedure for verifying the stability of the cylindrical shell of an oil tank with a floating roof, under wind load.
Słowiński Kamil   +2 more
doaj   +1 more source

An analytical insight into the buckling paradox for circular cylindrical shells under axial and lateral loading [PDF]

open access: yes, 2015
A large number of authors in the past have concluded that the flow theory of plasticity tends to overestimate significantly the buckling load for many problems of plates and shells in the plastic range, while the deformation theory generally provides ...
Alfano, G   +5 more
core   +4 more sources

Investigation of critical load of structures using modified energy method in nonlinear-geometry solid mechanics problems

open access: yesNonlinear Engineering, 2022
Geometrically nonlinear analysis is required for resolving issues such as loading causes failure and structure buckling analysis. Although numerical methods are recommended for estimating the exact solution, they lack the necessary convergence in the ...
Razaghi Ahmad   +2 more
doaj   +1 more source

Buckling of Spherical Capsules

open access: yes, 2011
We investigate buckling of soft elastic capsules under negative pressure or for reduced capsule volume. Based on nonlinear shell theory and the assumption of a hyperelastic capsule membrane, shape equations for axisymmetric and initially spherical ...
Kierfeld, Jan, Knoche, Sebastian
core   +1 more source

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