Advantages of the mixed format in geometrically nonlinear analysis of beams and shells using solid finite elements

D Magisano, L Leonetti… - International Journal for …, 2017 - Wiley Online Library
The paper deals with two main advantages in the analysis of slender elastic structures both
achieved through the mixed (stress and displacement) format with respect to the more …

A corotational mixed flat shell finite element for the efficient geometrically nonlinear analysis of laminated composite structures

FS Liguori, A Madeo - International Journal for Numerical …, 2021 - Wiley Online Library
A corotational flat shell element for the geometrically nonlinear analysis of laminated
composite structures is presented. The element is obtained from the Hellinger–Reissner …

An efficient mixed variational reduced‐order model formulation for nonlinear analyses of elastic shells

D Magisano, K Liang, G Garcea… - International Journal …, 2018 - Wiley Online Library
Summary The Koiter‐Newton method had recently demonstrated a superior performance for
nonlinear analyses of structures, compared to traditional path‐following strategies. The …

Nonlinear elastic buckling and postbuckling analysis of cylindrical panels

Y Zhou, I Stanciulescu, T Eason… - Finite Elements in Analysis …, 2015 - Elsevier
This paper revisits the buckling analysis of a benchmark cylindrical panel undergoing snap-
through when subjected to transverse loads. We show that previous studies either …

Accurate and efficient a posteriori account of geometrical imperfections in Koiter finite element analysis

G Garcea, FS Liguori, L Leonetti… - International Journal …, 2017 - Wiley Online Library
The Koiter method recovers the equilibrium path of an elastic structure using a reduced
model, obtained by means of a quadratic asymptotic expansion of the finite element model …

[HTML][HTML] Initial post-buckling of variable-stiffness curved panels

SC White, G Raju, PM Weaver - Journal of the Mechanics and Physics of …, 2014 - Elsevier
Variable-stiffness shells are curved composite structures in which the fibre-reinforcement
follow curvilinear paths in space. Having a wider design space than traditional composite …

Post-buckling optimisation strategy of imperfection sensitive composite shells using Koiter method and Monte Carlo simulation

FS Liguori, A Madeo, D Magisano, L Leonetti… - Composite …, 2018 - Elsevier
A numerical stochastic strategy for optimising composite elastic shells undergoing buckling
is presented. Its scope is to search for the best stacking sequence that maximises the …

The Koiter–Newton approach using von Kármán kinematics for buckling analyses of imperfection sensitive structures

K Liang, M Ruess, M Abdalla - Computer Methods in Applied Mechanics …, 2014 - Elsevier
Abstract The Koiter–Newton approach is a reduced-basis method for nonlinear structural
analyses. The method combines Koiter's approach as a predictor step and the Newton arc …

An isogeometric formulation of the Koiter's theory for buckling and initial post-buckling analysis of composite shells

L Leonetti, D Magisano, F Liguori, G Garcea - Computer Methods in …, 2018 - Elsevier
Numerical formulations of the Koiter theory allow the efficient prediction, through a reduced
model, of the behavior of shell structures when failure is dominated by buckling. In this work …

A generalized model for heterogeneous and anisotropic beams including section distortions

A Genoese, A Genoese, A Bilotta, G Garcea - Thin-Walled Structures, 2014 - Elsevier
A linear model for beams with compact or thin-walled sections and heterogeneous
anisotropic materials is presented. It is obtained by means of a Ritz–Galerkin approximation …