Journal ArticleDOI
A Numerical Study of Mode Jumping of Rectangular Plates
H. Suchy,Hans Troger,R. Weiss +2 more
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TLDR
In this paper, a four parameter unfolding of the von Karman plate equations is used to study sudden qualitative changes (jumps) in the buckled deflection surface of a rectangular plate if parameters are varied.Abstract:
A four parameter unfolding of the von Karman plate equations is used to study sudden qualitative changes (jumps) in the buckled deflection surface of a rectangular plate if parameters are varied. For the mode jumping to occur the linearized unperturbed problem has to have a double eigenvalue which leads to secondary bifurcations if small parameter perturbations are performed in the neighbourhood of the critical parameter value. As parameters we have the thrust p, the variation of the length of the plate and two types of transversal loads. Furthermore a detailed discussion is given whether the Liapunov-Schmidt method has to be used to obtain the two dimensional algebraic system of bifurcation equations or whether a Galerkin approximation will also yield qualitatively correct bifurcation equations.
Eine vierparametrige Entfaltung der von Karmanschen Plattengleichungen wird fur die Untersuchung plotzlicher qualitativer Anderungen der gebeulten Ausbiegungsflache einer Rechteckplatte bei Parametervariationen Benutzt. Damit das „Mode jumping”-Phanomen auftreten kann, mus das linearisierte perfekte Beulproblem einen doppelten Eigenwert besitzen, der dann zu sekundaren Verzweigungen fuhrt, falls kleine Parameteranderungen in der Nachbarschaft des kritischen Parameterwertes auftreten. Als Parameter treten die Belastung p in der Plattenflache, die Variation der Plattenlange und zwei spezielle Querbelastungen auf.
Es wird auch ausfuhrlich diskutiert, ob die Methode von Liapunov-Schmidt benutzt werden mus, um das zweidimensionale algebraische System von Verzweigungsgleichungen zu erhalten oder ob das Galerkin-Verfahren ausreicht, um qualitative korrekte Verzweigungsgleichungen zu erhalten.read more
Citations
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On the solution of mode jumping phenomena in thin-walled shell structures
TL;DR: In this paper, the authors investigated the merits of an hybrid procedure for the numerical simulation of transient buckling problems, which consists of the combination of a classical path-following method with a transient integration method where the first method is used for the quasi static (stable) parts of the simulation and the second method for the parts of simulation that belong to the transient domain.
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Element formulation and numerical techniques for stability problems in shells
Anders Eriksson,Costin Pacoste +1 more
TL;DR: In this paper, the authors describe how quasi-static, conservative instability problems can be considered in a multi-parametric context, where generalized path-following procedures for augmented equilibrium problems are used as computational tools.
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Numerical analysis of complex instability behaviour using incremental-iterative strategies
TL;DR: In this paper, the authors describe how quasi-static, conservative instability problems can be analyzed in a multi-parametric space, using generalised path-following procedures for augmented equilibrium problems.
Book ChapterDOI
Buckling analysis of elastic structures : A computational approach
TL;DR: In this article, a path-following method is used for the computation of the static equilibrium branches, together with additional techniques that are needed for the analysis of these solutions, and the stability and reactive forces at the critical states are also elaborated.
References
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Book
Theory of plates and shells
TL;DR: In this article, the authors describe the bending of long RECTANGULAR PLATES to a cycloidal surface, and the resulting deformation of shels without bending the plates.
Journal ArticleDOI
Boundary conditions and mode jumping in the buckling of a rectangular plate
TL;DR: In this paper, the singularity theory of mappings in the presence of a symmetry group was used to analyse the bifurcation equation obtained by the Lyapunov-Schmidt reduction applied to the Von Karman equations.
Journal ArticleDOI
Applications of generic bifurcation. II
Journal ArticleDOI
A stepsize control for continuation methods and its special application to multiple shooting techniques
TL;DR: In this article, a numerically applicable stepsize control for discrete continuation methods of orderp is derived on a theoretical basis, and the theoretical results and the performance of the proposed algorithm are invariant under affine transformation of the nonlinear system to be solved.