Results 41 to 50 of about 9,246 (255)

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

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

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

A Multiparameter, Numerical Stability Analysis of a Standing Cantilever Conveying Fluid [PDF]

open access: yes, 2002
In this paper, we numerically examine the stability of a standing cantilever conveying fluid in a multiparameter space. Based on nonlinear beam theory, our mathematical model turns out to be replete with exciting behavior, some of which was totally ...
Bou-Rabee, Nawaf M.   +2 more
core   +1 more source

Critical Thickness Ratio for Buckled and Wrinkled Fruits and Vegetables

open access: yes, 2013
Fruits and vegetables are usually composed of exocarp and sarcocarp and they take a variety of shapes when they are ripe. Buckled and wrinkled fruits and vegetables are often observed. This work aims at establishing the geometrical constraint for buckled
Dai, Hui-Hui, Liu, Yang
core   +1 more source

Nonlinear dynamic intertwining of rods with self-contact [PDF]

open access: yes, 2007
Twisted marine cables on the sea floor can form highly contorted three-dimensional loops that resemble tangles. Such tangles or hockles are topologically equivalent to the plectomenes that form in supercoiled DNA molecules. The dynamic evolution of these
Goyal, Sachin   +2 more
core   +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

Buckling Cascade of Thin Plates: Forms, Constraints and Similarity [PDF]

open access: yes, 1999
We experimentally study compression of thin plates in rectangular boxes with variable height. A cascade of buckling is generated. It gives rise to a self-similar evolution of elastic reaction of plates with box height which surprisingly exhibits ...
A Pocheau   +7 more
core   +1 more source

Secondary bifurcations in the buckling problem

open access: yesJournal of Computational and Applied Mathematics, 1989
This paper considers the calculation of secondary bifurcations by purely numerical methods. A model problem of one nonlinear elliptic partial differential equation in two independent variables is treated. By means of continuation and local perturbation methods secondary branch solutions can be detected.
openaire   +2 more sources

Similarity consideration of structural bifurcation buckling [PDF]

open access: yesForschung im Ingenieurwesen, 1999
Many structural bifurcation buckling problems exhibit a scaling or power law property. Dimensional analysis is used to analyze the general scaling property. The concept of a new dimensionless number, the response number-Rn, suggested by the present author for the dynamic plastic response and failure of beams, plates and so on, subjected to large ...
openaire   +1 more source

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