Results 11 to 20 of about 1,645 (111)

Nonlinear finite element treatment of bifurcation in the post-buckling analysis of thin elastic plates and shells [PDF]

open access: yes, 1995
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The geometrically nonlinear constant moment triangle based on the von Karman theory of thin plates is first described.
Bangemann, Tim
core   +7 more sources

Virtual testing of post-buckling behaviour of metallic stiffened panel [PDF]

open access: yes, 2011
The aim of the project presented in this thesis is to demonstrate a modelling method for predicting the variability in the ultimate load of stiffened panel under axial compression due to manufacturing variability.
Wang, Yang
core   +7 more sources

Non-degenerate umbilics, the path formulation and gradient bifurcation problems [PDF]

open access: yes, 2004
Parametrised contact-equivalence is successful for the understanding and classification of the qualitative local behaviour of bifurcation diagrams and their perturbations. Path formulation is an alternative point of view.
Sitta, AM, Furter, JE
core   +6 more sources

Some Modified Bifurcation Problems with Application to Imperfection Sensitivity in Buckling [PDF]

open access: yes, 1972
The branching theory of solutions of certain nonlinear elliptic partial differential equations is developed, when the nonlinear term is perturbed from unforced to forced.
Keener, James Paul
core   +1 more source

Geometrically nonlinear analysis of the stability of the stiffened plate taking into account the interaction of eigenforms of buckling

open access: yesStructural Mechanics of Engineering Constructions and Buildings, 2021
The aims of this work are a detailed consideration in a geometrically nonlinear formulation of the stages of the equilibrium behavior of a compressed stiffened plate, taking into account the interaction of the general form of buckling and local forms of ...
Gaik A. Manuylov   +2 more
doaj   +1 more source

Nonlinear postbuckling behavior of auxetic-core toroidal shell segments with Graphene reinforced face sheets under axial loads

open access: yesArchives of Mechanics, 2022
The main aim of this paper is to provide an analytical approach for the nonlinear buckling behaviors of toroidal shell segments made by three layers included honeycomb auxetic-core and two Graphene reinforced face sheets under axial compressive or ...
V.H. Nam   +4 more
doaj   +1 more source

Helical buckling of thin rods: FE modelling

open access: yesMATEC Web of Conferences, 2018
In this paper, we utilize the Finite Element (FE) method to model twisting of long thin rods and capture the bifurcation scenarios leading to heli- cal buckling and various further post-buckling states.
Kapitaniak Marcin   +2 more
doaj   +1 more source

Buckling problems of thin elastic shells [PDF]

open access: yesКомпьютерные исследования и моделирование, 2018
The article covers several mathematical problems relating to elastic stability of thin shells in view of inconsistencies that have been recently identified between the experimental data and the predictions based on the shallow- shell theory.
V. A. Grachev, Yu. S. Nayshtut
doaj   +1 more source

Numerical and Analytical Investigation of Stability of the Reinforced Plate

open access: yesCommunications, 2021
The work is aimed at the construction of an algorithm for studying the equilibrium states of a reinforced plate near critical points, using the first (cubic terms) nonlinear terms of the potential energy expansion.
Gaik A. Manuylov   +2 more
doaj   +1 more source

Post-Buckling Behaviour of Steel Structures with Different Types of Imperfections

open access: yesApplied Sciences, 2022
In this paper, the stability of steel members with a complex initial geometrical imperfection pattern are analysed. This issue is extremely important in the case of slender structures, characterised by multiple close critical loads and modal interactions,
Katarzyna Rzeszut
doaj   +1 more source

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