Search results for "paz"
showing 10 items of 1302 documents
IMPLICIT MESH DISCONTINUOUS GALERKIN FOR VARIABLE ANGLE TOW MULTILAYERED PLATES
2018
This works presents a novel computational scheme for variable angle tow (VAT) multilayered plates [1]. The characteristic features of the proposed scheme are the combined use of a discontinuous Galerkin (dG) formulation and an implicitly defined mesh. The formulation is based on the principle of virtual displacements (PVD) and the Equivalent Single Layer (ESL) assumption for the mechanical behavior of the VAT plates [2]. The problem is first placed within the dG framework by suitably introducing an auxiliary variable and by rewriting the set of equations governing ESL VAT plates as a firstorder system of differential equations. Following Arnold et al.[3] and by introducing suitably defined …
TRANSIENT AND FREE-VIBRATION ANALYSIS OF LAMINATED SHELLS THROUGH THE DISCONTINUOUS GALERKIN METHOD
2022
This paper presents a novel formulation for linear transient and free-vibration analysis of laminated shell structures based on Interior Penalty discontinuous Galerkin (DG) methods and variable-order through-the-thickness kinematics, whose combined use allows solving the shell problem with high-order accuracy throughout both the shell thickness and the shell modelling domain. The shell geometry is described via a generic system of curvilinear coordinates using either an analytical or a NURBS-based parametrization of the shell mid surface; the formulation also allows for the presence of cut-outs, which are implicitly represented by means of a level set function. After deriving the governing …
Buckling analysis of multilayered structures using high-order theories and the implicit-mesh discontinuous Galerkin method
2022
This work presents a novel formulation for the linear buckling analysis of multilayered shells. The formulation employs high-order Equivalent-Single-Layer (ESL) shell theories based on the through-the-thickness expansion of the covariant components of the displacement field, whilst the corresponding buckling problem is derived using the Euler’s method. The novelty of the formulation regards the solution of the governing equations, which is obtained via implicit-mesh discontinuous Galerkin (DG) schemes. The DG method is a high-order accurate numerical technique based on a discontinuous representation of the solution among the mesh elements and on the use of suitably defined boundary integral…
A regular variational boundary model for free vibrations of magneto-electro-elastic structures
2011
In this paper a regular variational boundary element formulation for dynamic analysis of two-dimensional magneto-electro-elastic domains is presented. The method is based on a hybrid variational principle expressed in terms of generalized magneto-electro-elastic variables. The domain variables are approximated by using a superposition of weighted regular fundamental solutions of the static magneto-electro-elastic problem, whereas the boundary variables are expressed in terms of nodal values. The variational principle coupled with the proposed discretization scheme leads to the calculation of frequency-independent and symmetric generalized stiffness and mass matrices. The generalized stiffne…
High-fidelity analysis of multilayered shells with cut-outs via the discontinuous Galerkin method
2021
Abstract A novel numerical method for the analysis of multilayered shells with cut-outs is presented. In the proposed approach, the shell geometry is represented via either analytical functions or NURBS parametrizations , while generally-shaped cut-outs are defined implicitly within the shell modelling domain via a level set function . The multilayered shell problem is addressed via the Equivalent-Single-Layer approach whereby high-order polynomial functions are employed to approximate the covariant components of the displacement field throughout the shell thickness. The shell governing equations are then derived from the Principle of Virtual Displacements of three-dimensional elasticity an…
Nel cyberspazio. Visioni urbane delle giga-città
2015
L’autrice riflette sulle immagini delle giga-città, o smart cities, attualmente in fase di costruzione in aree completamente desertiche dell’India, dell’Africa, del Nuovo Messico, della Cina e degli Emirati Arabi, che strutturano i propri spazi con codici della rappresentazione rapportati alla dimensione del cyberspazio. Il disegno urbano di queste città digitali si caratterizza per gli avveniristici volumi architettonici, per le sperimentazioni tecnologiche e per la lettura attraverso layer delle piattaforme virtuali e delle infrastrutture trasparenti. The author reflects on the images of giga-cities, or smart cities, currently under construction in completely desert areas in India, Africa…
Sull'adeguatezza dell'indennità euro-unitaria di disoccupazione (EUBS)
2017
L’indennità euro-unitaria di disoccupazione (EUBS) è una misura di armonizzazione volta alla convergenza regolamentare a livello europeo del sostegno al reddito in caso di disoccupazione. L’EUBS è una delle proposte più significative che le istituzioni europee stanno elaborando con gli stati membri e le parti sociali. L’EUBS ha presupposti giuridici nel TFUE e nella Costituzione italiana. Il saggio è un contributo giuridico all’idea politica sotto una duplice prospettiva. Si studiano, da una parte, le complicazioni e le criticità dell’introduzione dell’EUBS rispetto alle fonti di diritto europeo; al contempo, con riferimento alla stratificazione normativa del sistema previdenziale italiano …
Dispositivi liturgici e sistemi di fruizione negli spazi della devozione
2012
Dolci e Doglio, differenti maieutiche territoriali nell'esperienza meridionale
2009
Il testo mette a confronto due personaggi particolarmente significativi nella costruzione delle vicende del Sud negli anni ’50 e ’60, Carlo Doglio e Danilo Dolci. Si vuole cercare di capire quali rapporti si svilupparono trai due intellettuali nel periodo della loro collaborazione e quali matrici culturali ispiravano il loro operato.
TABLE 3. QUESTIONS DE DURABILITÉ CULTURELLE ET ENVIRONNEMENTALE
2016
Il contributo gli esiti di un forum dei soggetti territoriali, sottolineando come il tema della partecipazione sia un prerequisito per la sostenibilità delle scelte progettuali. L'article porte sur les résultats d'un forum régional du sujet et met l'accent sur la participation comme une exigence pour la durabilité des choix de conception. Le Forum, organisé dans le cadre du programme DO.RE.MI.HE., a représenté l’une des rares occasions de voir plusieurs organismes territoriaux et associations, qui travaillent à divers niveaux sur le territoire, réunis autour d’une même table en vue d’imaginer un futur pour la ville et le territoire au départ du site UNESCO.