Eugenio Brusa

Politecnico di Torino, Mechanics, Faculty Member

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Eugenio Brusa is Full Professor of Machine Design, head of the Laboratory/Research Group of Industrial Systems Engineering and Design at the Politecnico di Torino, within the Dept. Mechanical and Aerospace Engineering and currently Director of the Doctiral School of the same University.
Address: Corso Duca degli Abruzzi 24
10129 TORINO Italy

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Ben Lund

The Academia.edu Team

Natalie Baddour

University of Ottawa | Université d'Ottawa

Michael Spivey

University of California, Merced

M.M. Noor

Universiti Malaysia Pahang (UMP)

Remo Caponi

University of Cologne

Evangelos Papadopoulos

National Technical University of Athens

michele ciavarella

Politecnico di Bari

Aidy Ali

Universiti Pertahanan Nasional Malaysia

Armando Marques-Guedes

UNL - New University of Lisbon

Iolanda Craifaleanu

Technical University Of Civil Engineering, Bucharest

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Papers by Eugenio Brusa

Crankshaft Balancing Design Platform: A Practical Application

On the vibration analysis of coupled transverse and shear piezoelectric functionally graded porous beams with higher-order theories

Journal of Strain Analysis for Engineering Design, Jun 3, 2020

This investigation aims to perform a detailed natural frequency analysis of functionally graded p... more This investigation aims to perform a detailed natural frequency analysis of functionally graded porous beams integrated with transverse (d 31) and shear (d 15) piezoelectric layers under short circuit and open circuit electrical conditions. It is assumed that the core layer is made of functionally graded materials containing porosities. Due to the existence of internal pores, the mechanical properties of functionally graded materials are considered according to the modified powerlaw rule which includes the effect of porosity. The distribution of electric potential within the d 31 and d 15 piezoelectric layers is modeled based on nonlinear variation for both short circuit and open circuit conditions. Employing the classical, the first-order, and the higher-order beam theories incorporated with the virtual work principle as well as Maxwell's equation, the electromechanical equations of motion are derived. The governing equations are then solved analytically for simply supported boundary condition and a parametric study is presented. After validation of the results, some new interesting conclusions covering the effects of porosity volume fraction, porosity distribution, various piezoelectricity modes, power-law index, and the beam theories on short circuit and open circuit resonance frequencies are reported. It is believed that the presented numerical results could provide a benchmark to check the accuracy of the approximated approaches.

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An Orchestration Method for Integrated Multi-Disciplinary Simulation in Digital Twin Applications

Aerospace, Jun 30, 2023

This article is an open access article distributed under the terms and conditions of the Creative... more

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Design of an active magnetic stabilizer of the dynamic behaviour of high speed rotors

A new concept of active dynamic stabilizer aimed to operate the rotors at fairly high supercritic... more A new concept of active dynamic stabilizer aimed to operate the rotors at fairly high supercritical speed is here investigated. Instead of using the non rotating damping, as the classic literature suggest, a contra-rotating action is applied. Experiments were performed first on a flexible rotor, successfully stabilized by an eddy current magnetic damper. Advantages of contra-rotating the control forces of the active magnetic bearings of an electromechanical spindle are then described.

Tutorato di Calcolo Numerico

$Research paper thumbnail of Coupled analysis of fracture mechanics and piezoelectricity in active layers in the ABAQUS code operated through the ISIGHT tool$

Coupled analysis of fracture mechanics and piezoelectricity in active layers in the ABAQUS code operated through the ISIGHT tool

This paper describes a new computational approach aimed at investigating the crack propagation in... more This paper describes a new computational approach aimed at investigating the crack propagation inside smart structures equipped with surface bonded piezoelectric layers, when the electromechanical coupling due to piezoelectric phenomenon is exploited. The ABAQUS code is used to perform a prediction of both the fracture mechanics and the coupled response of the structure, through a suitable connection between the two solution environments, being provided by the ISIGHT tool. A preliminary analysis is shown and some significant results are proposed

A Parametric Study of Structural Adhesive Joints for Aerospace Applications

Springer eBooks, 1995

Among the bonding technologies which are usually provided for assembling, the components of a str... more Among the bonding technologies which are usually provided for assembling, the components of a structure the adhesive joints have been already appreciated because of the advantages which they offer. The aim of this paper is the analysis of the most important parameters in order to provide a numerical investigation of the static behaviour of adhesive joints. Particularly the optimal design techniques are investigated in the topical case of adherends of different materials.

Structural Mechatronics and Micromechatronics

Thermomechanical coupling effect of graphite electrodes upon the electric arc furnace dynamics

Meccanica, Jul 23, 2014

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Towards an effective interoperability of models within the 'Systems Engineering' applied to aeronautics

Aeronautics is a typical field of application of the Systems Engineering, since aircraft includes... more Aeronautics is a typical field of application of the Systems Engineering, since aircraft includes many on-board equipments. The Systems Engineering provides some suitable tool for an effective description of their functional behavior but a detailed design needs a quantitative investigation. This task is performed by resorting to modeling techniques, which define all the equations required to predict the dynamic behavior in operation. Physical phenomena are described by numerical models, which nowadays have to be connected to the tools of the Systems Engineering to proceed with a really integrated product life management. This task is a fascinating feature of the so-called 'inter-operability', which can be implemented among methods, models and numerical tools. A test case is herein shown and concerns the modeling of a de-icing system for a regional turboprop. A brief description of the modeling activity is proposed, then tools of the System Engineering are applied to perform a review of requirements. Limits of functional models are explored as well as some weak information about functions and requirements in the physical models is detected. Region of inter-operability of the two modeling environments is consequently defined. The available methodologies for interoperating the design tools are discussed, by resorting to the tasks of the ARTEMIS-CRYSTAL project.

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Design procedure against thermomechanical fatigue damage of RF–MEMS switch

The RF-MEMS switch undergoes a complex loading in service, including nonlinear electromechanical ... more The RF-MEMS switch undergoes a complex loading in service, including nonlinear electromechanical excitation, heating and alternate contact between electrodes. Thermomechanical coupling makes aggressive fatigue damage, and requires a suitable strategy to effectively predict the MEMS life. This paper assesses a suitable procedure to predict the microswitch behaviour, to define a suitable range of load and temperature, in operation, against the thermomechanical damages and provides a design criterion looking compatible with setups of some commercial products.

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Meccatronica strutturale: Sistemi e Tecnologie

La nuova e travolgente rivoluzione industriale, descritta a livello internazionale simbolicamente... more La nuova e travolgente rivoluzione industriale, descritta a livello internazionale simbolicamente dall'iniziativa strategica "Industria 4.0" si fonda sulla realizzazione di prodotti intelligenti e complessi attraverso sistemi di produzione innovativi che traggono beneficio dall'impiego della digitalizzazione dei processi di ingegneria, dalle nuove metodologie di sviluppo prodotto, come il "Systems Engineering", dall'automazione avanzata, nonche dall'utilizzo di "cyber-physical systems", di micro e nanotecnologie e di un'elevata connettivita informatica a mezzo della rete ("Internet of Things"). Un ruolo di primo piano in quest'opera e svolto dalla meccatronica, intesa come integrazione di meccanica, elettronica, informatica e automazione. Essa sta alla base di varie soluzioni innovative che sono state recentemente proposte per lo sviluppo del prodotto industriale. Il dialogo tra specialisti di diversa formazione e, tuttavia, alquanto difficile, proprio per le competenze diverse che essi esprimono nell'ambito di un progetto multidisciplinare. I costi e i tempi di sviluppo del prodotto meccatronico possono, quindi, risentirne. Questo testo illustra i principali sistemi e le tecnologie attualmente disponibili nella Meccatronica delle strutture. Tra i primi nel suo genere nella letteratura tecnica italiana, lungi dall'essere esaustivo, si propone di suggerire un semplice e intuitivo percorso di avvicinamento per coloro che studiano per la prima volta l'argomento, ovvero collaborano con professionisti di diversa formazione, per perseguire il comune obiettivo della progettazione di sistemi meccatronici e della loro integrazione. Un secondo volume, di cui questo e propedeutico, e dedicato piu approfonditamente alle tecniche di modellazione e ai criteri di dimensionamento di sistemi meccatronici strutturali.

Influence of the structural non-linearity on the performance o fan electret-based vibration energy harvester

Films of electret material are currently used to cover the surface of electrodes of some vibratio... more Films of electret material are currently used to cover the surface of electrodes of some vibration capacitive harvesters based on deformable beams, clamped at both ends. Nevertheless, performance of this device is often predicted through some simplified electromechanical model, which neglects the effect of geometric nonlinearity due to a mechanical coupling between the axial and flexural behaviors of the clamped beam. Stiffening of beam and nonlinear behavior are herein investigated, by resorting to a distributed model of electromechanical coupling of the vibration harvester, based on the finite element method. Influence upon the performance of energy conversion is then analyzed and an optimization of the configuration is proposed to assess some suitable design criteria.

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Dynamics of cold rolling mills with multiple rolls

A novel SU-8 microgripper with external actuator for biological cells manipulation

Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS, May 11, 2011

Specification and target impose several limitations and difficulties in micro manipulators design... more Specification and target impose several limitations and difficulties in micro manipulators design. These obstacles are even more important when the target of microgripping is biological cells. Even though a variety of designs and solutions has been proposed in the literature, the problems of temperature at microgripper tip and applied voltage in gripping jaws are still unsolved. In this paper a

Capacitive vibration energy harvesting with resonance tuning

Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS, Apr 1, 2009

... This makes wider the bandwidth at which the energy harvesting is effective [6]. Other strateg... more

Non-synchronous rotating damping effects in gyroscopic rotating systems

Journal of Sound and Vibration, Mar 1, 2005

The effects of non-synchronous rotating damping, ie, of energy dissipation in elements rotating a... more

Characterization of thermo-mechanical coupling in gold microbridges

Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS, 2010

Experimental Characterization of Electro–Thermo–Mechanical Coupling in Gold RF Microswitches

Journal of microelectromechanical systems, Aug 1, 2013

ABSTRACT This paper analyses the multiple coupling occurring in some metallic microstructures ele... more ABSTRACT This paper analyses the multiple coupling occurring in some metallic microstructures electrostatically actuated in presence of thermal effect. Some relevant issues of basic procedures implemented to identify the relevant design parameters and the material properties of micro-electro-mechanical systems (MEMS) are preliminarily discussed. Temperature effects on the MEMS strain distribution in operating conditions are then investigated. Thermo-mechanical coupling is studied through some experiments performed on microbridge prototypes electrostatically actuated by comparing their behavior in case of superposed electro-thermal actuation and of thermal loading without electrostatic coupling. A detailed analysis is here performed to evaluate the role of the thermal stress upon the buckling of the microstructure and its effect on the deformed shape of the microbeam. Electro-thermo-mechanical coupling is therefore modeled and experimentally analyzed. Pull-in tests are used to detect some effects of mutual interaction between temperature and electrical actuation. The methodologies, here proposed, apply to several materials used in microfabrication, although experimental evidence described herein concerns some gold microbridges to be included in RF devices.

On wave propagation and free vibration of piezoelectric sandwich plates with perfect and porous functionally graded substrates

Journal of Intelligent Material Systems and Structures, Jan 12, 2022

This paper aims to develop analytical solutions for wave propagation and free vibration of perfec... more This paper aims to develop analytical solutions for wave propagation and free vibration of perfect and porous functionally graded (FG) plate structures integrated with piezoelectric layers. The effect of porosities, which occur in FG materials, is rarely reported in the literature of smart FG plates but included in the present modeling. The modified rule of mixture is therefore considered for variation of effective material properties within the FG substrate. Based on a four-variable higher-order theory, the electromechanical model of the system is established through the use of Hamilton’s principle, and Maxwell’s equation. This theory drops the need of any shear correction factor, and results in less governing equations compared to the conventional higher-order theories. Analytical solutions are applied to the obtained equations to extract the results for two investigations: (I) the plane wave propagation of infinite smart plates and (II) the free vibration of smart rectangular plates with different boundary conditions. After verifying the model, extensive numerical results are presented. Numerical results demonstrate that the wave characteristics of the system, including wave frequency and phase velocity along with the natural frequencies of its bounded counterpart, are highly influenced by the plate parameters such as power-law index, porosity, and piezoelectric characteristics.

Crankshaft Balancing Design Platform: A Practical Application

On the vibration analysis of coupled transverse and shear piezoelectric functionally graded porous beams with higher-order theories

Journal of Strain Analysis for Engineering Design, Jun 3, 2020

Download

An Orchestration Method for Integrated Multi-Disciplinary Simulation in Digital Twin Applications

Aerospace, Jun 30, 2023

This article is an open access article distributed under the terms and conditions of the Creative... more

Download

Design of an active magnetic stabilizer of the dynamic behaviour of high speed rotors

Tutorato di Calcolo Numerico

$Research paper thumbnail of Coupled analysis of fracture mechanics and piezoelectricity in active layers in the ABAQUS code operated through the ISIGHT tool$

Coupled analysis of fracture mechanics and piezoelectricity in active layers in the ABAQUS code operated through the ISIGHT tool