Papers by Carmelo Majorana
International Journal of Innovative Science and Modern Engineering, 2021
The principal objective for this work was to extend the field of application of FEM to space fram... more The principal objective for this work was to extend the field of application of FEM to space frame beam-column connections under static loading and with lateral displacements. A four-storey building was modelled under static load condition. Horizontal and vertical structural elements were designed according to Eurocode 2. In order to understand the behavior of the external node made by under column, two beam and upper column, two models using correct boundary condition and nonlinear behavior of materials have been done using Abaqus Software The analysis was performed on an interior and an exterior joint models each in two conditions: unconfined and confined joint varying the distributions of number of stirrups for the beam reinforcement and the column reinforcement .A sup structural model to submit to numerical analysis have been performed, the Concrete Damage Plasticity model (CDPM) has been chosen for fit the nonlinear behavior for the concrete and the elastoplastic model has been...
Materials
Computational methods have always affected many engineering fields due to their enormous potentia... more Computational methods have always affected many engineering fields due to their enormous potential and ability to facilitate various tasks [...]
Biomedicines
Biomechanical studies are expanding across a variety of fields, from biomedicine to biomedical en... more Biomechanical studies are expanding across a variety of fields, from biomedicine to biomedical engineering. From the molecular to the system level, mechanical stimuli are crucial regulators of the development of organs and tissues, their growth and related processes such as remodelling, regeneration or disease. When dealing with cell mechanics, various experimental techniques have been developed to analyse the passive response of cells; however, cell variability and the extraction process, complex experimental procedures and different models and assumptions may affect the resulting mechanical properties. For these purposes, this review was aimed at collecting the available literature focused on experimental chondrocyte and chondron biomechanics with direct connection to their biochemical functions and activities, in order to point out important information regarding the planning of an experimental test or a comparison with the available results. In particular, this review highlighte...
Atti del Convegno Le costruzioni metalliche a Padova nell'Ottocento, Padova 26 gennaio 1991 -... more Atti del Convegno Le costruzioni metalliche a Padova nell'Ottocento, Padova 26 gennaio 1991 - Aula Magna della Facoltà d'Ingegneri
Annals of Biomedical Engineering
Mechanical stimuli are fundamental in the development of organs and tissues, their growth, regene... more Mechanical stimuli are fundamental in the development of organs and tissues, their growth, regeneration or disease. They influence the biochemical signals produced by the cells, and, consequently, the development and spreading of a disease. Moreover, tumour cells are usually characterized by a decrease in the cell mechanical properties that may be directly linked to their metastatic potential. Thus, recently, the experimental and computational study of cell biomechanics is facing a growing interest. Various experimental approaches have been implemented to describe the passive response of cells; however, cell variability and complex experimental procedures may affect the obtained mechanical properties. For this reason, in-silico computational models have been developed through the years, to overcome such limitations, while proposing valuable tools to understand cell mechanical behaviour. This being the case, we propose a combined continuous-tensegrity finite element (FE) model to ana...
Proceedings of the Fifth International Conference on Engineering Computational Technology
Solar Energy, 2014
ABSTRACT Guidelines for designing a concrete storage module and for its integration into a solar ... more ABSTRACT Guidelines for designing a concrete storage module and for its integration into a solar plant, respecting constraints linked both to an adequate solar field operation and to the production system based on ORC, are described. A series of simplified procedures are developed to be used for a first module design and more sophisticated (even if more expensive) simulation techniques via the Finite Element Method are checked and upgraded. Once the ongoing experimental phase on a scaled storage prototype at the ENEA site of Casaccia has been concluded, the obtained data will be used for completing both the setup of the calculation instruments and the R&D activity dealing with the development of an appropriate concrete mixing, optimising its chemical–physical and durability performances, and with the module integration within a CSP system.
Applied Thermal Engineering
Abstract Thermal energy storage systems in solid state are the next generation of solar power pla... more Abstract Thermal energy storage systems in solid state are the next generation of solar power plants which bring a substantial optimization in the energy production; they compensate for the gap between the availability of solar irradiation and the electricity demand by an endowed heat storage. The proposed research is aimed to analyse the coupled behaviour of concrete including PCM (Phase Change Materials) particles employed as solid energy storage media, even emphasizing the relevance of analyses at the mesoscale level. A study on the increased thermal capacity in Thermal Energy Storage (TES) concrete solids with inclusions of PCM is developed within this paper. Particularly, the change in thermal behaviour of such composites by varying the inclusions percentage is assessed. Transient thermal analyses are conducted by considering a homogenized composite; a uniform distribution of PCM, obtained during mixing of fresh concrete, is assumed within the cementitious matrix. Additionally, the change in mechanical strength of such a material is analytically and numerically investigated, both at room temperature and during heating. 3D mechanical FE models are also developed at the meso-scale level to explicitly represent the main concrete components such as cement paste, coarse aggregates, and PCM to better describe the evolutionary process of thermal damage - if occurring - during plant functioning.
A numerical formulation is described in this paper to analyse fully three dimensional consolidati... more A numerical formulation is described in this paper to analyse fully three dimensional consolidation of deformable porous media, taking into account simultaneous fluid flows and thermal transport. The numerical procedure is implemented in a finite element code, which allows to investigate general three dimensional problems
The stress and strain states of composite concrete sections of bridge decks subjected to hygromet... more The stress and strain states of composite concrete sections of bridge decks subjected to hygrometric variations are evaluated in this paper. As usual in this application field, prestressed concrete beams are considered, and after a given time concrete is cast to obtain the final composite section. In the analysis attention is focussed on the effects of the different ages of used concrete and the problems arising at the interface of the different constructive elements. A first approach to deal with this engineering solution with a specific computational tool is attempted for this purpose. Creep, shrinkage and damage effects are taken into account, within the framework of finite element method, using a suitable code which can be adapted for the simulation of structures of any shape.
The current Special Issue entitled "Advances in Structural Mechanics Modeled with FEM" ... more The current Special Issue entitled "Advances in Structural Mechanics Modeled with FEM" aims to collect several numerical investigations and analyses focused on the use of the Finite Element Method (FEM) [...].
Concrete Solutions 2011, 2011
Advances in Mechanical Engineering, 2013
The nonlinear dynamic response for steel blast-resistant doors is here described, referring to an... more The nonlinear dynamic response for steel blast-resistant doors is here described, referring to an innovative experience at both national and international level requiring an ad hoc design and specific numerical simulations. The elements capability to sustain thermal loads due to fire hazards is additionally accounted for. The study has been conducted to define and characterize the nonlinear behaviour of a large number of doors, with the objective of sustaining dynamic loads from explosive hazards of fixed magnitude, as well as variable design and clearing times. The local overcome of the material strength limit (with correspondent plastic response) and possible formation of plastic hinges has been critically discussed. Numerical models have allowed for refining first design sketches and subsequently understanding the real thermomechanical behaviour for the investigated elements. Some experimental tests have been additionally performed, verifying the correctness of the already available numerical results, validating the adopted procedures, and correspondingly guaranteeing the doors' structural efficiency even under dynamic loads higher than design ones.
International Journal of Technology Management, 2009
ABSTRACT We survey the literature on Applications of Knowledge Representation and Reasoning Techn... more ABSTRACT We survey the literature on Applications of Knowledge Representation and Reasoning Techniques to Structural Engineering. We focus on the aspects related to healthcare: Hospitals and Structures related to accidents and emergencies, which are actors of the healthcare system. The conclusions of the review are three: focus is necessarily on actual systems for industrial uses; there are three trends emerging in recent investigations in the field: ontological foundations, collaboration management and soft computing; these are the basis for the a 'new' discipline: Structurotics. The investigation is ended with an example in a concrete application in the field of Tunnel Upgrade.
MATEC Web of Conferences, 2013
Concrete under high temperature conditions is a topic of wide interest for applications in severa... more Concrete under high temperature conditions is a topic of wide interest for applications in several engineering fields, from nuclear to civil as well as building engineering.
Communications in Applied Numerical Methods, 1988
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Papers by Carmelo Majorana