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Marcelo Tulio Piovan

Marcelo Tulio Piovan
Universidad Tecnológica Nacional, Facultad Regional Bahía Blanca, Argentina · Mechanical Engineering Department // Grupo Analisis de Sistemas Mecánicos

PhD.

About

71
Publications
11,873
Reads
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898
Citations
Additional affiliations
March 2006 - present
Universidad Tecnológica Nacional, Fac. Reg. Bahía Blanca
Position
  • Senior Researcher
Education
May 1996 - August 2003
Universidad Nacional del Sur
Field of study
  • Structural Engineering
February 1988 - November 1993
Universidad Tecnológica Nacional, Fac. Reg. Bahía Blanca
Field of study
  • Mechanical Engineering

Publications

Publications (71)
Article
The objective of this article is to introduce a practical procedure for determining analytical solutions (or at least with arbitrary precision) to free vibration and instability problems related to plane frames, by means of an extended power series method. This procedure leads to an important reduction in the number of unknowns to be handled. In th...
Article
Full-text available
This work aims to evaluate and compare variations of a methodology for performing tensile tests on thermoplastic specimens constructed by additive manufacturing technologies (AMT) with filament deposition modeling (FDM). The testing procedures of pieces made in FDM machines do not yet have any conclusive standards because 3D printing, as a disrupti...
Article
In this paper a new 1D finite element model for dynamic calculations of PGFM curved beams with variable curvature is developed. The reduced high-speed calculation model allows stochastic aspects in the dynamic of the structure to be evaluated through recursive methods, as shown at the end of the present work with Monte Carlo. The reduced model inco...
Chapter
In this work we perform uncertainty quantification in the dynamic response of curved electromechanic metastructures made up of piezoelectrics in Bimorph configuration. The study is performed through a new reduced 1D finite element model derived from the theory of linear elasticity and general piezoelectricity, obtained through the Hamilton’s Princi...
Article
Full-text available
In the present paper, the non-conservative instability of a cantilever single-walled carbon nanotube (SWCNT) through nonlocal theory is investigated. The nanotube is modeled as clamped-free beam carrying a concentrated mass, located at a generic position, or in the presence of crack, and subjected to a compressive axial load, at the free end. Nonlo...
Article
El objetivo del presente trabajo es el desarrollo de un modelo computacional unidimensional de una metaestructura curva de material piezoeléctrico en configuración bimorfo. El modelo será capaz de calcular la respuesta dinámica de la metaestructura en las 3 dimensiones del espacio, de manera precisa y con bajo costo computacional. El mismo deriva d...
Article
En este trabajo se presenta el desarrollo, construcción y uso de un banco de ensayo para medir las características elásticas de los plásticos utilizados en máquinas de impresión 3D por deposición de filamento polimérico. Productos impresos de utilidad industrial o comercial requieren contar con equipamientos adecuados para la determinación de sus p...
Article
Full-text available
This paper surveys techniques for estimating the modulus of elasticity of 3D printed parts through free vibration tests. The study involves, in the context of common criteria of International Standards, the comparison between different procedures of recording and analyzing the vibratory motion using high precision equipment (proximity sensor connec...
Article
Este trabajo presenta los resultados del desarrollo de una plataforma terrestre multipropósito para ser empleada con diferentes montajes. La plataforma está diseñada considerando concepciones donde el costo de pérdida de un equipo completo no sea altamente sensible, como eventualmente puede suceder con otros equipos completos activos en Argentina (...
Article
Full-text available
RESUMEN El procedimiento de Modelación por Deposición de Filamento (MDF) polimérico es una de las variantes de mayor repercusión en el conjunto de tecnologías de construcción aditiva, usualmente llamadas impresión 3D. La irrupción de máquinas de bajo costo y la continua mejora de la calidad y resistencia de los polímeros empleados, exige estimar la...
Article
This paper presents a unified theory for the vibrational analysis of thin-walled composite beams (TWCB) with arbitrary planar axial curvature, variable cross section, and general composite material layup, allowing for the accurate modelling of a large class of composite beams with an accuracy normally achievable only through shell-type finite-eleme...
Article
En este artículo se efectúa la comparativa de la respuesta dinámica de un sistema leva seguidor entre varias leyes de movimiento. Las leyes que se comparan son la hipótesis de estudio que se pretende validar denominada Bézier Grado 15, frente a leyes estándar utilizadas en el diseño de levas como la ley polinomial 3-4-5, la ley polinomial 4-5-6-7,...
Article
Full-text available
The present paper explores two approaches which, based on the measurement of the two first natural frequencies, allow the identification of the tension force in cables with insulators. For this purpose, the nonlinear mathematical model of the mechanical system and its Finite Element discretization are firstly stated. Besides, free-vibrations experi...
Article
En este artículo se presenta el desarrollo constructivo general y los estudios de la respuesta mecánica de una pinza de manipulación de dos mordazas para ser montada en un brazo robótico. El objetivo de este trabajo es tener una pinza, muy barata y de fácil construcción, para manipulación de cargas peligrosas ante el muy posible evento de su destru...
Conference Paper
In this paper we study the dynamics of wind-turbine blades constructed with resin-fiber reinforced composites with uncertainties. The constructive process of these structures, although conceived to be carried out mostly with robust automatic machines, cannot avoid the presence of a number of details that lead to unexpected spurious mechanical behav...
Article
This paper presents a unified theory for modelling composite thin-walled beams (TWB) of arbitrary planar axial curvature, variable cross-section and general material layup, complemented by the development of an Isogeometric Analysis (IGA) formulation for the discretization and solution of the equilibrium equations. To this end, the standard formula...
Article
Full-text available
RESUMEN En los últimos años se está utilizando, ampliamente, la construcción aditiva o impresión 3D, para la fabricación de bienes tecnológicos. Este procedimiento de construcción tiene y tendrá un gran impacto industrial. Existen muchos procedimientos de impresión 3D y entre ellos el más conocido se denomina Modelado por Deposición de Filamento (M...
Article
Full-text available
Nanosensors are simple engineering devices designed to detect and convey informations about nanoparticles and biomolecules. The nanosized mass sensors are based on the fact that the resonant frequency is sensitive to the resonator and the attached mass. The change of the attached mass on the resonator causes the resonant frequency to deviate from i...
Article
The objective of this paper is the evaluation of uncertainty propagation associated to several parameters in the dynamics of magneto-electro-elastic (MEE) curved beams. These MEE structures can be employed as imbedded parts in high performance technological systems to control motions and/or attenuate vibrations, for energy harvesting, etc. Although...
Conference Paper
Full-text available
En este trabajo se expone la investigación realizada sobre la cuantificación de incertidumbre en el comportamiento dinámico de un sistema tipo leva seguidor, contemplando el efecto de la variabilidad de algunos parámetros del modelo matemático representativo del sistema mecánico. Parámetros tales como las constantes de rigidez de los resortes actua...
Article
In this article we perform a quantification of the uncertainty propagation of the dynamics of slender initially curved structures constructed with fiber reinforced composite materi-als. Depending on the manufacturing process, composite materials may have deviations with respect to the expected response, often called nominal response in a determin-i...
Article
The scope of the present paper is to present some new contributions in the dynamics of curved/straight MEE beams. The structure consists of a curved beam constructed with ceramic/metallic materials whose elastic behavior can be modified by influence of electro-magnetic fields. The problem of coupled elastic, electric and magnetic fields is briefly...
Conference Paper
In this paper, the authors are concerned with uncertianty quantification of the dynamic behavior of magneto-electro-elastic (MEE) beams (both straight and curved) mounted on elastic foundations. The MEE beams are a type of composite structures that can be employed as imbedded subsystem in high performance aero spatial structures, control of motion...
Article
In this work an analysis is performed on the nonlinear planar vibrations of a functionally graded beam subjected to a combined thermal and harmonic transverse load in the presence of internal resonance. Adopting the direct perturbation MMS technique, the partial differential equations of motion of the beam are reduced to sets of first-order nonline...
Conference Paper
This article is devoted to the dynamic analysis of slender initially curved structures con-structed with fiber reinforced composite materials. There are many ways to manufacture a composite material for uses in structural constructions, for example filament winding and resin transfer molding, among others. Depending on the manufacturing process com...
Conference Paper
Full-text available
Land transportation vehicles have suspension systems to limit the vibrations caused by the movement. The main function of these systems is to maintain the welfare of people (in vehicles or cars) or the integrity and functionality of installed equipment (in robotic platforms). Suspension systems are constituted by damping and elastic components whos...
Article
In this paper the dynamic and buckling features of slender structures with curved axis are addressed. A survey on the literature concerning mechanics of beams constructed with non-homogeneous materials or with functionally graded materials reveals only a few papers devoted to the dynamics and buckling of curved beams constructed with such materials...
Conference Paper
Full-text available
Todo vehículo de transporte terrestre posee un sistema de amortiguamiento y/o suspensión para limitar las vibraciones ocasionadas por el movimiento; cuya función es mantener el bienestar de personas (en vehículos de transporte) o la integridad y funcionalidad de los equipos portantes (en plataformas robóticas). Los sistemas de suspensión poseen ele...
Article
Full-text available
In this article a non-linear model for dynamic analysis of rotating thin-walled composite beams is introduced. The theory is deduced in the context of classic variational principles and the finite element method is employed to discretize and furnish a numerical approximation to the motion equations. The model considers shear flexibility as well as...
Article
In this paper a general model for transient dynamic analysis of functionally graded material (FGM) thick arch/ring is introduced. The material is arbitrarily distributed between metal (aluminium or steel) and ceramic (Alumnina or Silicon carbide) phases, according to several types of functional distributions, including exponential law, power law, s...
Article
The dynamic stability of functionally graded thin-walled beams allowing for shear deformability is investigated in this article. The analysis is based on a model that has small strains and moderate rotations which are formulated through the adoption of a second-order non-linear displacement field. The beam is subjected to axial external dynamic loa...
Article
During the last two decades materials, that exhibit graded properties, left their spirit of conceptual laboratory specimens to become a technological reality with a well established background. However structural applications of these materials are not a fulfilled research. Models of straight and curved beams are normally reported in the scientific...
Article
Full-text available
En el presente artículo se realiza una completa revisión de los conceptos de la teoría de Mecánica de Fractura Fractal Discreta. El objetivo del trabajo se centra en la comprensión de los efectos de la fractalidad de una fisura, mediante la obtención de los factores de intensidad de tensiones del modo I de fractura. Se analiza además la capacidad d...
Article
The constant needs of the industry impel the engineering community in seeking of new concepts and new strategies in order to improve the structural response of structures as well as to enhance the endurance of materials. This is particularly true in the case of rotating blades that are subjected to severe environmental conditions such as high tempe...
Article
In this paper a continuous model is presented that by finite element discretization is employed in the analysis of coupled extensional flexural and torsional vibrations of a drill-string. The drill-string is described as an axially rotating beam constrained to move inside a rigid cylinder that simulates the walls of the perforation hole. The beam i...
Conference Paper
Full-text available
Las construcciones mecánicas siempre requieren de materiales metálicos que por las exigencias cada vez más intensas de solicitación y uso deben estar adecuadamente caracterizados en cuanto a sus propiedades físicas y mecánicas. Esta caracterización se debe efectuar con máquinas de ensayo apropiadas, las cuales suelen ser de tecnología dependiente d...
Article
In this paper, analytical solutions for the free vibration analysis of tapered thin-walled laminated-composite beams with both closed and open cross-sections are developed. The present study is based on a recently developed model that incorporates in a full form the shear flexibility. The model considers shear flexibility due to bending as well as...
Article
This paper is devoted to study the behavior, in the range of linear viscoelasticity, of shear flexible thin-walled beam members constructed with composite laminated fiber-reinforced plastics. This work appeals to the correspondence principle in order to incorporate in unified model the motion equations of a curved or straight shear-flexible thin-wa...
Article
Problems related to the vibrations of axially moving flexible beams made of functionally graded materials are addressed. The problem of an axially moving beam may be interpreted as a telescopic system in which the mass is not constant, the mechanism of elastic deformation is transverse bending. A thin-walled beam with annular cross-section is analy...
Article
Full-text available
In this paper the Heillinger-Reissner principle is employed to derive a new model for a curved beam made of functionally graded materials. The model is developed on the assumptions that the shear deformability is not negligible. The Hellinger-Reissner principle can be handled in order to derive the motion equations together with a consistent descri...
Conference Paper
Full-text available
In different engineering structures, the fatigue induced cracks represent one of the most dangerous sources of eventual catastrophic failures. Accordingly, the early detection of the crack and the estimation of its gravity are tasks of crucial importance. There are a number of localized methods to detect and analyze the presence of cracks in struct...
Article
In this paper, a new theoretical model is developed for the generalized linear analysis of composite thin-walled curved beams with open and closed cross-sections. In the present model two important concepts concerning to composite thin-walled curved beams are addressed. The first one is the incorporation in the model of what is called full shear de...
Article
In the present work a geometrically non-linear model is presented to study the coupling of axial and torsional vibrations on a drill-string, which is described as a vertical slender beam under axial rotation. It is known that the geometrical non-linearities play an important role in the stiffening of a beam. Here, the geometrical stiffening is anal...
Article
In this paper, a new theoretical model is developed for the generalized linear analysis of composite thin-walled beams with open or closed cross-sections. The present model incorporates, in a full form the shear deformability by means of two features. The first one may be addressed as a mechanical aspect where the effect of shear deformability due...
Article
In this paper, a theoretical model is developed for the stability analysis of composite thin-walled beams with open or closed cross-sections. The present model incorporates, in a full form, the shear flexibility (bending and non-uniform warping), featured in a consistent way by means of a linearized formulation based on the Reissner’s Variational P...
Article
In the present work a continuous model is presented to study, by means of finite element discretization, the coupling of extensional, flexural and torsional vibrations under a state of initial stresses on a drillstring, which is described as a vertical slender beam under axial rotation [1]. The structure is subjected to distributed loads due to its...
Article
The aim of this work is to describe an analysis of the transverse shear deformability in the dynamics of thin-walled composite beams. Some thin-walled-composite-beam models, which are derived by means of different approaches (principle of virtual works and principle of Hellinger–Reissner among others), show substantial discrepancies due to the empl...
Article
In this paper, a theoretical model is developed for the dynamic analysis of composite thin-walled beams with open or closed cross-sections. The present model incorporates, in a full form, the shear flexibility (bending and warping shear) as well as a state of initial stresses. This allows to study the free vibration and buckling problems in a unifi...
Article
Full-text available
Palabras claves: Vigas Compuestas; Flexibilidad de Corte; Post-pandeo. Resumen. En el presente trabajo se desarrolla una teoría geométricamente no-lineal para vigas compuestas de pared delgada con sección transversal arbitraria (abierta o cerrada) y teniendo en cuenta la incorporación de varios aspectos no convencionales tal como la flexibilidad de...
Article
This paper presents numerical study about the influence of the shear flexibility, due to either bending and warping, on the out-of-plane free vibration of continuous horizontally curved thin-walled beams with both open and closed sections. This study was made by means of a recently developed finite element formulation for shear deformable curved th...
Article
In this paper a simple finite element is proposed for analyzing out of plane vibration of thin walled curved beams, with both open and closed sections, considering shear flexibility. The present element is obtained from a variational formulation governing the dynamics of a three-dimensional elastic body in which the stress tensor as well as the dis...
Article
The Timoshenko beam theory was derived based on Reissner's principle of the three-dimensional elasticity theory. This derivation yields the motion equations as well as the constitutive relationships in a unified form, thus avoiding the external introduction of the correction factor.
Article
Full-text available
Palabras Clave: vigas de paredes delgadas. Materiales compuestos. Resumen. Diferentes tipos de estructuras esbeltas construidas con materiales compuestos reforzados por fibras se utilizan con mayor frecuencia en diferentes áreas de ingeniería, especialmente en las construcciones aerospaciales, mecánicas y civiles, debido a que exhiben excelentes pr...
Article
Full-text available
En este trabajo se presenta un modelo teórico para el análisis estructural estático de vigas curvas anisótropas con secciones de pared delgada. El modelo incorpora de manera completa la flexibilidad de corte, la cual se discrimina en corte debido a flexión y corte debido a alabeo no uniforme. Asimismo, el modelo se concibe para secciones arbitraria...

Projects

Projects (4)
Project
Study of coupled systems, like electromechanical or magneto-mechanical. The main interest is in the nonlinear dynamics and the inter play of friction, impacts, and non-standard constraints.
Project
Study of random vibrations of discrete and continuous, linear and nonlinear, systems. An old mechanical problem is being revisited. The stationary and non stationary cases are being studied from a new perspective.