References of "Rossi, Barbara"
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See detailDatasheet for steel products
Rossi, Barbara ULg

in Bragança, Luis; Koukkari, Heli; Blok, Rijk (Eds.) et al Integrated approach towards sustainable constructions (2011)

This datasheet concerns life-cycle inventory of common steel products. It was prepared using data coming from Worldsteel association for an easy and straightforward use of it in life-cycle analysis of ... [more ▼]

This datasheet concerns life-cycle inventory of common steel products. It was prepared using data coming from Worldsteel association for an easy and straightforward use of it in life-cycle analysis of buildings (whole or parts of it) and steel constructions. [less ▲]

Detailed reference viewed: 13 (2 ULg)
See detailDatasheet for stainless steel products
Rossi, Barbara ULg

in Bragança, Luis; Koukkari, Heli; Blok, Rijk (Eds.) et al Integrated approach towards sustainable constructions (2011)

This datasheet concerns life-cycle inventory of common stainless steel products. It was prepared using data coming from Aperam (formerly ArcelorMittal Stainless Europe) for an easy and straightforward use ... [more ▼]

This datasheet concerns life-cycle inventory of common stainless steel products. It was prepared using data coming from Aperam (formerly ArcelorMittal Stainless Europe) for an easy and straightforward use of it in life-cycle analysis of buildings (whole or parts of it) and stainless steel constructions. [less ▲]

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See detailExperimental investigations of the material behavior of Ti6Al4V titanium alloy
Rossi, Barbara ULg; Gilles, Gaëtan ULg; Zolotas, Eric et al

Report (2011)

Computer models are widely used to support the development of conventional design methods based on expensive full-scale tests or trial and error methods. Nevertheless, in order to accurately model metal ... [more ▼]

Computer models are widely used to support the development of conventional design methods based on expensive full-scale tests or trial and error methods. Nevertheless, in order to accurately model metal forming processes as well as structural behavior of load carrying elements, it is necessary to afford an accurate knowledge of the material properties. Titanium is one of the material for which various industrial sectors such as aerospace or biomedical are showing an increasing interest. This paper presents the experimental tests performed on the titanium based alloy Ti6Al4V to investigate on its mechanical behavior, especially in terms of its anisotropy and hardening. For that purpose, a classical uniaxial and a non-standard biaxial experimental equipments designed by Florès in the Materials and Structures Mechanics Laboratory of the University of Liège have been used to perform tensile, simple shear and cyclic shear tests as well as successive simple shear and plane strain tests, which provide the main contribution of this paper in the form of stress-strain curves. [less ▲]

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See detailConception environnementale des constructions
Rossi, Barbara ULg

Conference given outside the academic context (2010)

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See detailSustainable steel constructions – Life-cycle inventory, methods and applications
Rossi, Barbara ULg

Conference (2010, July 07)

This document gives an overview of the challenges and issues related to a sustainable use of steel in the construction sector. After an introduction that concerns the challenges associated to the use of ... [more ▼]

This document gives an overview of the challenges and issues related to a sustainable use of steel in the construction sector. After an introduction that concerns the challenges associated to the use of steel as a sustainable material, the principles of a life-cycle analysis are presented. The paper then focuses on the life-cycle inventory data of several products: finished cold-rolled coil, electro-galvanized steel, section rolling and rebar. The data are presented for two (sometimes three) different recycling rates. Indeed, since steel is recycled to more than 85% at the end of its life and recyclable and indefinite number of times, the presented inventory includes allocation for scrap inputs and outputs using the closed material loop recycling methodology developed by the International Iron and Steel Institute (IISI). A description of the method principles is also provided. The influence of the end-of-life credit method will be discussed. Corrosion and subsequently maintenance of steel products will be treated afterwards and a brief comparison of the life-cycle inventory will be provided for electro-galvanized steel and finished steel. [less ▲]

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See detailMechanical behavior of ferritic grade 3Cr12 stainless steel-Part 2: Yield locus and hardening laws
Rossi, Barbara ULg

in Thin-Walled Structures (2010), 48(7), 553-560

In practice, the finite element method is quite successful in simulating the metal forming processes or the structural behavior of members carrying loads. The accuracy of such models largely depends on ... [more ▼]

In practice, the finite element method is quite successful in simulating the metal forming processes or the structural behavior of members carrying loads. The accuracy of such models largely depends on the mechanical laws used to describe the material behavior. Numerous authors have shown the effect of material anisotropy on deep drawing or the influence of non-linear hardening behavior on the resistance of structural members. Studies have also demonstrated how important the evaluation of the material parameters is during the theoretical calculation of the strength of stainless steel members for instance. Non-linear metallic materials emerge as an alternative to elastic perfectly plastic materials, be it for their stainless, ductility or strength properties. It is thus necessary to be able to accurately model their material behavior. In the present paper, prior to any computations, different laws are described: simple phenomenological law and micro–macro constitutive models based on crystal plasticity. Classical yield surface such as Hill one are combined with isotropic (Swift or Ramberg– Osgood) and kinematic (Armstrong–Frederick or Teodosiu–Hu) hardening models to define the material behavior. The material parameters included in each law are then carefully identified. For that purpose, the experimental equipment developed by Flores (2005) in the Structures Laboratory of the University of Liege was used to perform biaxial tests. Coupled with classical uniaxial tests, they provide the necessary data for the identification of the yield locus and the hardening models. [less ▲]

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See detailMechanical behavior of ferritic grade 3Cr12 stainless steel-Part 1: Experimental investigations.
Rossi, Barbara ULg

in Thin-Walled Structures (2010), 48(7), 540-552

Ferritic stainless steels are corrosion resistant steels with a low and stable cost. Widely used in automotive applications, structural applications using ferritic stainless steels are only emerging ... [more ▼]

Ferritic stainless steels are corrosion resistant steels with a low and stable cost. Widely used in automotive applications, structural applications using ferritic stainless steels are only emerging mainly because ferritics are partially covered by structural standards due to a shortage of design data. Computer models are more and more used to support the developments of conventional design methods based on expensive full-scale tests or trial and errors methods. And for the modeling of metal forming processes as well as structural behavior of members, it is necessary to afford an accurate knowledge of the mechanical properties. In this paper, the experimental investigations made on the chromium based alloy 3Cr12 (1.4003) in order to characterize its mechanical behavior are presented. During the research, a classical uniaxial experimental equipment and a bi-axial experimental equipment designed by Flores (2005) in the Structures Laboratory of the University of Lige have been used. The collection of tests performed included tensile tests, cyclic shear tests, simple shear tests and successive simple shear and plane-strain tests. The yield locus and the hardening models are presented and identified in a companion paper by the same author. [less ▲]

Detailed reference viewed: 81 (15 ULg)
See detailLife cycle inventory of stainless steel – A review of challenges, methods and applications.
Rossi, Barbara ULg

Conference (2010, July)

This document gives an overview of the challenges and issues related to a sustainable use of steel in the construction sector. After an introduction that concerns the challenges associated to the use of ... [more ▼]

This document gives an overview of the challenges and issues related to a sustainable use of steel in the construction sector. After an introduction that concerns the challenges associated to the use of steel as a sustainable material, the principles of a life-cycle analysis are presented. The paper then focuses on the life-cycle inventory data of several products: finished cold-rolled coil, electro-galvanized steel, section rolling and rebar. The data are presented for two (sometimes three) different recycling rates. Indeed, since steel is recycled to more than 85% at the end of its life and recyclable and indefinite number of times, the presented inventory includes allocation for scrap inputs and outputs using the closed material loop recycling methodology developed by the International Iron and Steel Institute (IISI). A description of the method principles is also provided. The influence of the end-of-life credit method will be discussed. Corrosion and subsequently maintenance of steel products will be treated afterwards and a brief comparison of the life-cycle inventory will be provided for electro-galvanized steel and finished steel. [less ▲]

Detailed reference viewed: 37 (0 ULg)
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See detailLife cycle inventory of stainless steel – A review of challenges, methods and applications.
Rossi, Barbara ULg

in Sustainable constructions - A life-cycle approach in engineering: International Symposium: Malta, 23-25 July 2010 (2010, July)

Detailed reference viewed: 4 (0 ULg)
See detailSustainable constructions: life-cycle inventory analysis
Veljkovic, Milan; Rossi, Barbara ULg

in Borg, Ruben Paul; Veljkovic, Milan; Koukkari, Heli (Eds.) et al Sustainable construction - A life-cycle approach in engineering - International Training School (2010)

The chapter defines the life-cycle of construction products with a focus on steel products. Particularly, it explains how to take into account the recycling in the life-cycle analysis. It underlines the ... [more ▼]

The chapter defines the life-cycle of construction products with a focus on steel products. Particularly, it explains how to take into account the recycling in the life-cycle analysis. It underlines the differences between open-loop materials and closed-loop materials. Examples of the calculation of impacts are also given for indefinitely recyclable materials. [less ▲]

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See detailCombined distortional and overall flexural-torsional buckling of cold-formed stainless steel sections: Experimental investigations
Rossi, Barbara ULg; Jaspart, Jean-Pierre ULg; Rasmussen, Kim J.R.

in Journal of Structural Engineering (2010), 136(4), 354-360

This paper presents a series of 48 full-scale tests on press-braked stainless steel lipped channel section columns subjected to concentric compression. The tests were carried out between fixed ends in the ... [more ▼]

This paper presents a series of 48 full-scale tests on press-braked stainless steel lipped channel section columns subjected to concentric compression. The tests were carried out between fixed ends in the Structures Laboratory of the University of Liège and the test specimens were designed such that distortional buckling developed in the section prior to overall flexural-torsional buckling. The stainless steel alloy was 1.4003 chromium weldable steel, popularly known as 3Cr12. Three different geometries were tested using the same experimental set-up. A critical summary of the standards and methods for calculating the carrying capacity of cold-formed stainless steel compression members is presented in a companion paper by the same authors. [less ▲]

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See detailAspects environnementaux
Rossi, Barbara ULg

Conference (2010, April)

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See detailCombined distortional and overall flexural-torsional buckling of cold-formed stainless steel sections: Design
Rossi, Barbara ULg; Jaspart, Jean-Pierre ULg; Rasmussen, Kim J.R.

in Journal of Structural Engineering (2010), 136(4), 361-369

This paper provides a critical summary of the European standards and design methods available for calculating the strength of cold-formed stainless steel compression members. The standards considered (so ... [more ▼]

This paper provides a critical summary of the European standards and design methods available for calculating the strength of cold-formed stainless steel compression members. The standards considered (so far mainly applied to columns failing by flexural buckling) are applied to the case of lipped channel section columns failing by combined distortional and overall flexural-torsional buckling. As observed during the tests presented in a companion paper, distortional buckling is found to have a considerable effect on the cross-section resistance and is prone to interact with the global flexural-torsional mode. It is investigated how the different formulations account for the two buckling modes and their interaction and how accurate strength predictions they provide. A new Direct Strength Method taking into account these failure modes is then presented and compared to the tests results. [less ▲]

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See detailSustainable materials and structures
Rossi, Barbara ULg

Learning material (2010)

Detailed reference viewed: 9 (3 ULg)
Peer Reviewed
See detailEnhanced proof strength after cold process of fabrication of non-linear metallic profiles – Comparison of two predictive models for hollow sections
Rossi, Barbara ULg; Jaspart, Jean-Pierre ULg

in International Symposium on Tubular Structures : ISTS13, Hong Kong, 15-17 December 2010 (2010)

Detailed reference viewed: 25 (4 ULg)
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See detailMechanical behavior of a ferritic stainless steel under simple and complex loading paths
Rossi, Barbara ULg; Jaspart, Jean-Pierre ULg

in International Conference on Structure and Architecture : ICSA2010, Guimaraes 21-23 July 2010 (2010)

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See detailEnhanced mechanical properties after cold process of fabrication of non-linear metallic profiles
Rossi, Barbara ULg; Pascon, Frédéric ULg; Degée, Hervé ULg

in Thin-Walled Structures (2009), 47(12), 1575-1589

It is well known that the cold-forming process is likely to significantly enhance the mechanical properties of the profile by strain hardening leading to increased resistance compared to a resistance ... [more ▼]

It is well known that the cold-forming process is likely to significantly enhance the mechanical properties of the profile by strain hardening leading to increased resistance compared to a resistance assessment based on nominal properties. It is thus necessary to accurately determine the mechanical properties after the cold process of fabrication. In this paper, experimental reference data and formulae calculating the increased proof strength in cold-formed stainless steel profiles are reviewed. A new theory-based formula for the evaluation of the actual mechanical properties of stainless steel structural members using the virgin sheet material properties is then established. This formula is dependent upon the radius of curvature to thickness ratio; it is not restricted to a single alloy but is valid for non-linear metallic materials. Prediction efficiency is evaluated against the collected experimental data and particular attention is paid to the set of experimental data related to hollow sections. The main thrust of the predictive model lies in its axiomatic roots in contrast to the traditional empirical formulae found in the literature. [less ▲]

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See detailA natural neighbour method for materially non linear problems based on Fraeijs de Veubeke variational principle
Xiang, Li; Cescotto, Serge ULg; Rossi, Barbara ULg

in Acta Mechanica Sinica (2009), 25(1), 83-93

The natural neighbour method can be considered as one of many variants of the meshless methods. In the present paper, a new approach based on the Fraeijs de Veubeke (FdV) functional, which is initially ... [more ▼]

The natural neighbour method can be considered as one of many variants of the meshless methods. In the present paper, a new approach based on the Fraeijs de Veubeke (FdV) functional, which is initially developed for linear elasticity, is extended to the case of geometrically linear but materially non-linear solids. The new approach provides an original treatment to two classical problems: the numerical evaluation of the integrals over the domain A and the enforcement of boundary conditions of the type u i = ũ i on S u . In the absence of body forces (F i = 0), it will be shown that the calculation of integrals can be avoided and that boundary conditions of the type u i = ũ i on S u can be imposed in the average sense in general and exactly if ũ i is linear between two contour nodes, which is obviously the case for ũ i = 0. [less ▲]

Detailed reference viewed: 77 (14 ULg)