Ph.D POSTER DAY - Dottorato in Ingegneria Meccanica

DOTTORATO DI RICERCA IN INGEGNERIA MECCANICA XXXI CICLO

ore 10.00-13.00

Dottorando 

Tutore

Tema del dottorato

Sommario 

 poster

Relazione annuale

ADAMO FEDERICA

CURA' FRANCESCA MARIA

Graphene based materials for mechanical applications

The possibility of using graphene based materials for mechanical applications have been investigated focusing on two aspects: fretting wear and new generation foams.

Poster application/pdf (1,91 MB)

 Relazione application/pdf (287,28 kB)

DAGA ALESSANDRO PAOLO

GARIBALDI LUIGI

Vibration Monitoring: Gearbox identification and fault detection

Application of novel techniques to the identification and quantification of faults in gearboxes with both     model-based and data-driven algorithms.

 Poster application/pdf (1,42 MB)

 Relazione application/pdf (218,77 kB)

DE PIETRO GABRIELE

FINA ALBERTO

 The goal of this research project is to develop continuum structures capable of morphing between different stable shapes without the need for complex mechanisms or conventional actuators. Potential applications encompass the field of deployable architectural structures, aeronautics (shape-changing aerodynamic panels, variable geometry engine exhausts and reconfigurable airplane wings), optics (shape-changing mirrors for active focusing in adaptive optical systems), and micro electromechanical systems (micro-switches, mechanical memory cells, valves, micro-pumps). The behaviour of such structures is investigated via advanced one-dimensional finite elements based on Carrera Unified Formulation (CUF). Such one-dimensional finite elements are conveniently used in order to obtain a good accuracy of results in terms of displacements and stresses as well as reduced computational costs.

Modeling of multi-stable composite structures via CUF-based 1D finite elements: advanced theories for multi-field, geometrically nonlinear and curved composite structures.

 Poster application/pdf (551,06 kB)

 Relazione application/pdf (162,68 kB)

FAROKHI NEJAD ALI

CHIANDUSSI GIORGIO

 Multi Body Dynamic Analysis of the 3D Synchronizer Mechanism for a transmission system

 The present poster illustrates the methodology of modeling a synchronizer mechanism through multibody dynamic analysis (MBD). For the purpose of validation, a test rig machine was used and the dynamic response of three different synchronizer mechanisms were recorded. A set of dynamic equation for each phase of synchronization were developed and a Simulink model was designed for the evaluation of the synchronizer mechanism in detail. A rigid MBD model is performed based on the physical characteristics that extracted from the experiments. In addition, a transient modal analysis was performed to show the dynamic response of the synchronizer during the shifting process. The outcome of this ongoing project is 2 journal papers (one under review and one published) and 2 conference papers (one is published and one is submitting in next month).

 Poster application/pdf (2,15 MB)

 Relazione application/pdf (42,88 kB)

GARCIA DE MIGUEL ALBERTO

CARRERA ERASMO

Diagnostic and prognostic of composite structures by coupled NDT based inspection and repair and computational multiscale approaches based on component-wise, beam, shell and solid formulations

Development of efficient multiscale simulation techniques for the accurate stress analysis of composite structures with extension to the structural health-monitoring.

 Poster application/pdf (1,57 MB)

 Relazione application/pdf (115,53 kB)

GUARNERA DANIELE

CARRERA ERASMO

Refined One Dimensional Finite Element models applied to bio-mechanical problems

I risultati dell’applicazione della Unified Formulation nel campo delle bio-strutture e in campo fluido-dinamico sono qui presentati. Il poster mostra infine come i risultati sin qui raggiunti gettano le basi della costruzione di un tool per l’interazione fluido-struttura.

 Poster application/pdf (1,45 MB)

 Relazione application/pdf (297,21 kB)

HUI YANCHUAN

CARRERA ERASMO

This research is to find an accurate and efficient solution for the design and optimization of composite materials and structures with superior performances regarding strength and stiffness for lightweight applications. Two activities have been investigated about this topic: 1 A multi-scale model of fibre reinforced beams using hierarchical one-dimensional finite elements. In this study, the Fourier-related double scale analysis and the multi-level finite element method (FE2) are combined to reduce the computational cost. This non-linear multi-scale system is solved by the Asymptotic Numerical Method (ANM). 2 A novel FE2 method based Fourier macroscopic model for instability phenomena of long fiber reinforced composites. At structural level, several higher-order refined beam theories can be easily implemented on the basis of Carrera's unified formulation (CUF). Within the framework of FE2 method, a coupled two-scale model is obtained.

Content of the Poster: 1 A multi-scale model of fibre reinforced beams using hierarchical one-dimensional finite elements 2 A novel FE2 method based Fourier macroscopic model for instability phenomena of long fiber reinforced composites

 Poster application/pdf (419,24 kB)

 relazione application/pdf (156,87 kB)

KALEEL IBRAHIM

CARRERA ERASMO

Computationally efficient non-linear finite element framework for composite structure simulations

Development of an efficient finite element framework for failure analyses of metallic and composite structures via the Carrera Unified Formulation

 Poster application/pdf (1,12 MB)

 Relazione application/pdf (142,71 kB)

LI GUOHONG

CARRERA ERASMO

 

Towards efficient multifield shell model, hygrothermal/piezoelectric models, node-dependent kinematics and Hierarchical Legendre Expansions are implemented.

 Poster application/pdf (1,36 MB)

 Relazione application/pdf (25,33 kB)

MESSANA ALESSANDRO

CARELLO MASSIMILIANA

Progettazione di un braccetto inferiore multi materiale per una sospensione McPherson

L'argomento di ricerca riguarda la progettazione, l’analisi virtuale ed il testing di un braccetto multi materiale (composito+metallo) per una sospensione McPherson. L'obiettivo del lavoro riguarda l’ottimizzazione delle prestazioni strutturali e dinamiche del componente, sia dal punto di vista vibrazionale che dal punto di vista della dinamica del veicolo. Per questo motivo, si è scelto di sviluppare una soluzione innovativa sulla base di un braccetto esistente di un veicolo di categoria “C-Small SUV”. La prima fase dello studio si concentra sugli effetti dovuti dalla riduzione della massa del braccetto in termini di comfort, handling e trasmissione delle vibrazioni attraverso un modello multibody. La seconda fase consiste invece nell’analisi FEM per la valutazione delle caratteristiche strutturali di base e la definizione degli obiettivi di progettazione per il componente ibrido. Infine, è stata condotta un’attività di correlazione numerico sperimentale sul componente “base” necessaria per la taratura del modello FEM in campo dinamico.

 Poster application/pdf (2,45 MB)

 Relazione application/pdf (134,41 kB)

MIRMOHAMMAD SADEGHI SEYED HAMID

VIGLIANI ALESSANDRO

MODELING AND EXPERIMENTAL ANALYSIS FOR THE INTEGRATION OF ZF-TRW HIL AND TYRE TEST BENCH

With integration between ZF-TRW HIL and tyre test bench, the tyre transient behaviour and its effects on active control systems like ABS can be investigated.

 Poster application/pdf (1,20 MB)

Relazione application/pdf (80,90 kB)

MOCERA FRANCESCO

SOMA' AURELIO

 ELETTRIFICAZIONE DEI VEICOLI DA LAVORO

In the design of a hybrid electric working vehicle the integration between each physical subsystem is a crucial point that needs to be exploited

 Poster application/pdf (1,26 MB)

 

MORADI MONA

RAPARELLI TERENZIANO

Study of Dynamic Characteristics of Air Pad-Bearings

Air bearings are highly used in high precision applications due to providing almost zero friction. But low stiffness and damping limit air bearing application. In this study the main concentration is to study the dynamic characteristics of air pads both using distributed and Lumped parametric methodss. In this study a lumped model is developed to be used for sensitivity analysis as it needs less computational time. In addition, on the other hand the use of zero stiffness bearing is discussed to provide the possibility of decoupling the system from environmental vibrations. Therefore, a zero stiffness bearing wa designed and manufactured.

 Poster application/pdf (919,75 kB)

 Relazione application/pdf (701,87 kB)

RAZAVYKIA ABBAS

DELPRETE CRISTIANA

Analytical Modeling of Piston Ring Assembly Friction

Piston ring-pack assembly accounts for one of the major sources of friction losses in internal combustion engines. The regime of lubrication varies during the piston cycle because of the transient nature of applied load and kinematic contact conditions; ring geometry, surface topography, and lubricant rheology also play an important role. One method to increase the efficiency and reduce the emissions of an internal combustion engine is to reduce the mechanical friction power loss on lubricated surfaces of the engine. For the achievement of these goals, the instantaneous investigation of lubrication characteristics and the various improvements are indispensable. From literature studies it is found that friction between piston and cylinder falls mainly in two different regimes: mixed or boundary lubrication and hydrodynamic lubrication. The main purpose of the PhD research work is to develop analytical and numerical reliable engine friction models that could be used in transient engine simulation to predict actual engine output in terms of friction losses.

 Poster application/pdf (1,70 MB)

 relazione application/pdf (170,25 kB)

SIRIGU SERGEJ ANTONELLO

MATTIAZZO GIULIANA

Development and analysis of an oceanic wave energy converter

My research activity consists in the development of a gyroscopic based wave energy converter called Iowec (Inertial Oceanic Wave Energy Converter). The design of this device starts from the resource assessment and comprehension of the ocean waves phenomena, it continues through the wave-to-wire model of the system, and ends with the experimental validation of the model and the economical assessment of an entire array of devices.

 poster application/pdf (1,74 MB)

 Relazione application/pdf (88,34 kB)

UMER MUHAMMAD

BOTTO DANIELE

 

 To understand the kinematic and dynamic behavior of under-platform dampers coupled with turbine blade dynamics by using a newly developed test rig.

 

 Relazione application/pdf (201,56 kB)

 DOTTORATO DI RICERCA IN INGEGNERIA MECCANICA XXXII CICLO

 ore 14.00-17.00

Dottorando

Tutore

Tema del dottorato

Sommario

poster

Relazione annuale

ANASTASIO DARIO

MARCHESIELLO STEFANO

Nonlinearity in continuous structural dynamics: from modelling to identification.

Nonlinear dynamics of continuous systems: study and modelling of overhead contact lines and identification of distributed nonlinearities by subspace-based technique.

 Poster application/pdf (1,80 MB)

Relazione application/pdf (1,09 MB)

BERTOLINO ANTONIO CARLO

SORLI MASSIMO

Prognostic of flight control actuators

 The thesis topic is the Prognostic and Health Management of electromechanical and electrohydraulic flight actuators. It consists in monitoring the various actuators’ components to identify the occurrence of faults and estimate the remaining useful life. This allows the maintenance to switch from preventive to predictive. In order to achieve this goal, the development of a "high-fidelity" virtual bench (model) is paramount, based on the system's physics and reflecting its behaviour. Artificial faults and defects can be injected on this model. It can therefore be used to train the fault detection algorithm and to simulate the effects of fault growth process. Furthermore, this model can be used to compare actual and simulated trends with the aim of detecting dangerous situations.

 Poster application/pdf (2,20 MB)

 Relazione application/pdf (871,41 kB)

BRUZZONE FABIO

ROSSO CARLO

Topic of the first year of gears dynamics research is the component response: what excites vibration, how to damp it and how to improve the design.

 

Poster application/pdf (1,34 MB)

Relazione application/pdf (321,49 kB)

CASTELLANOS MOLINA LUIS MIGUEL

TONOLI ANDREA

Constrained optimal control strategies for Active Magnetic Bearings.

Experimental results of different model predictive control approaches for Active Magnetic Bearings.

 Poster application/pdf (1,03 MB)

 Relazione application/pdf (134,26 kB)

CERUTTI JUAN JOSE

IUSO GAETANO

 

 The poster contains an overall view of the project, including the precedent research, description of the test and the achievements of the first year of my PhD. studies.
On the top are described the motivations and objectives of the thesis. This includes the CO2 emission problem and the effect on the automotive industry, and how the improvement of aerodynamics on vehicles can help to the emission reduction.
Then the experiment is briefly described, in which the model and the experimental setup is shown. The measurement devices and the systems of the test are also described. Furthermore, the first results obtained on the precedent research are presented.
Finally, the achievements of the first year are shown including the flow visualization of the wake through laser, the analysis of different geometrical configurations (partialization) of the active flow control system, hot wire technique for velocity and turbulence measurements, and advanced data analysis consisting on spectrum, cross correlation and wavelet analysis.

 Poster application/pdf (5,61 MB)

 Relazione application/pdf (276,61 kB)

DE BENEDICTIS CARLO

FERRARESI CARLO

Human-machine interaction

Three activites concerning human-machine interaction are presented, with possible applications in the biomedical and haptic technologies.

 Poster application/pdf (1,02 MB)

 Relazione application/pdf (161,28 kB)

PANERO ELISA

GASTALDI LAURA

Esoscheletri per Arti Superiori in Ambiente Industriale e Manifatturiero

Analisi tramite approccio modellistico dell’interfaccia uomo-macchina, evidenziando gli effetti biomeccanici
sull’utente ed i parametri caratterizzanti il device. Presentazione delle attività svolte.

 Poster application/pdf (976,19 kB)

 Relazione application/pdf (1,45 MB)

POURKIAEE SEYYEDMEHRDAD

ZUCCA STEFANO

Nonlinear Dynamics of Turbine Bladed Disks with Friction
Contacts: Development of Reduced Order Models

A new reduced order modeling technique for nonlinear force response analysis of mistuned bladed disks with friction contacts is presented

 Poster application/pdf (1,20 MB)

 Relazione application/pdf (193,68 kB)

SCIMMI LEONARDO SABATINO

MAURO STEFANO

Sviluppo di una metodologia per la collaborazione tra uomo e robot basata su sistemi di visione.

Metodologie di analisi e sperimentazione per lo sviluppo di modalità di interazione tra uomo e robot basate su sistemi di motion capture.

 Poster application/pdf (1,36 MB)

 Relazione application/pdf (3,35 MB)

VERGORI ELENA

SOMA' AURELIO

Batteries for electric vehicles

Batteries are the main limitation in electric vehicles spread due to their limited capacity, cost and safety. Today the focus is on Li-ion cells.

Poster application/pdf (1,35 MB)

 relazione application/pdf (430,73 kB)