The Experts below are selected from a list of 3633 Experts worldwide ranked by ideXlab platform
Claude Boulay - One of the best experts on this subject based on the ideXlab platform.
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Tensile and Bending Behaviour of a strain hardening cement-based composite: Experimental and numerical analysis
Cement and Concrete Composites, 2012Co-Authors: J. L. Tailhan, Pierre De Rossi, Claude BoulayAbstract:IFSTTAR has developed a Multi-Scale Cement Based Composite (MSCC). This composite material is strain hardening in tension and exhibits ultra-high strengths as well in both compression and tension. The main research objectives for the present paper are the determination of the strain hardening properties of the material: using a newly developed tensile test in conjunction with a finite-element-based inverse analysis, the input parameters of an (adapted) numerical model can be identified. Therefore, numerical simulations can be performed to describe the Bending Behaviour of a thin slab having a thickness representative of the corresponding industrial application. The main conclusions of this study are: The studied material clearly exhibits strain hardening in tension with a uniaxial tensile strength of about 20 MPa and a modulus of rupture of about 50 MPa.Elasto-plastic Behaviour with strain hardening is a relevant mechanical model (for the studied material) for designing (by the finite element method) structural elements behaving principally in Bending. © 2011 Elsevier Ltd. All rights reserved.
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Tensile and Bending Behaviour of a strain hardening cement-based composite: Experimental and numerical analysis
Cement and Concrete Composites, 2012Co-Authors: J. L. Tailhan, Pierre De Rossi, Claude BoulayAbstract:IFSTTAR has developed a Multi-Scale Cement Based Composite (MSCC). This composite material is strain hardening in tension and exhibits ultra-high strengths as well in both compression and tension. The main research objectives for the present paper are the determination of the strain hardening properties of the material : using a newly developed tensile test in conjunction with a finite-element-based inverse analysis, the input parameters of an (adapted) numerical model can be identified. Therefore, numerical simulations can be performed to describe the Bending Behaviour of a thin slab having a thickness representative of the corresponding industrial application. The main conclusions of this study are : The studied material clearly exhibits strain hardening in tension with a uniaxial tensile strength of about 20 MPa and a modulus of rupture of about 50 MPa. Elasto-plastic Behaviour with strain hardening is a relevant mechanical model (for the studied material) for designing (by the finite element method) structural elements behaving principally in Bending.
J. L. Tailhan - One of the best experts on this subject based on the ideXlab platform.
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Tensile and Bending Behaviour of a strain hardening cement-based composite: Experimental and numerical analysis
Cement and Concrete Composites, 2012Co-Authors: J. L. Tailhan, Pierre De Rossi, Claude BoulayAbstract:IFSTTAR has developed a Multi-Scale Cement Based Composite (MSCC). This composite material is strain hardening in tension and exhibits ultra-high strengths as well in both compression and tension. The main research objectives for the present paper are the determination of the strain hardening properties of the material: using a newly developed tensile test in conjunction with a finite-element-based inverse analysis, the input parameters of an (adapted) numerical model can be identified. Therefore, numerical simulations can be performed to describe the Bending Behaviour of a thin slab having a thickness representative of the corresponding industrial application. The main conclusions of this study are: The studied material clearly exhibits strain hardening in tension with a uniaxial tensile strength of about 20 MPa and a modulus of rupture of about 50 MPa.Elasto-plastic Behaviour with strain hardening is a relevant mechanical model (for the studied material) for designing (by the finite element method) structural elements behaving principally in Bending. © 2011 Elsevier Ltd. All rights reserved.
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Tensile and Bending Behaviour of a strain hardening cement-based composite: Experimental and numerical analysis
Cement and Concrete Composites, 2012Co-Authors: J. L. Tailhan, Pierre De Rossi, Claude BoulayAbstract:IFSTTAR has developed a Multi-Scale Cement Based Composite (MSCC). This composite material is strain hardening in tension and exhibits ultra-high strengths as well in both compression and tension. The main research objectives for the present paper are the determination of the strain hardening properties of the material : using a newly developed tensile test in conjunction with a finite-element-based inverse analysis, the input parameters of an (adapted) numerical model can be identified. Therefore, numerical simulations can be performed to describe the Bending Behaviour of a thin slab having a thickness representative of the corresponding industrial application. The main conclusions of this study are : The studied material clearly exhibits strain hardening in tension with a uniaxial tensile strength of about 20 MPa and a modulus of rupture of about 50 MPa. Elasto-plastic Behaviour with strain hardening is a relevant mechanical model (for the studied material) for designing (by the finite element method) structural elements behaving principally in Bending.
Pierre De Rossi - One of the best experts on this subject based on the ideXlab platform.
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Tensile and Bending Behaviour of a strain hardening cement-based composite: Experimental and numerical analysis
Cement and Concrete Composites, 2012Co-Authors: J. L. Tailhan, Pierre De Rossi, Claude BoulayAbstract:IFSTTAR has developed a Multi-Scale Cement Based Composite (MSCC). This composite material is strain hardening in tension and exhibits ultra-high strengths as well in both compression and tension. The main research objectives for the present paper are the determination of the strain hardening properties of the material: using a newly developed tensile test in conjunction with a finite-element-based inverse analysis, the input parameters of an (adapted) numerical model can be identified. Therefore, numerical simulations can be performed to describe the Bending Behaviour of a thin slab having a thickness representative of the corresponding industrial application. The main conclusions of this study are: The studied material clearly exhibits strain hardening in tension with a uniaxial tensile strength of about 20 MPa and a modulus of rupture of about 50 MPa.Elasto-plastic Behaviour with strain hardening is a relevant mechanical model (for the studied material) for designing (by the finite element method) structural elements behaving principally in Bending. © 2011 Elsevier Ltd. All rights reserved.
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Tensile and Bending Behaviour of a strain hardening cement-based composite: Experimental and numerical analysis
Cement and Concrete Composites, 2012Co-Authors: J. L. Tailhan, Pierre De Rossi, Claude BoulayAbstract:IFSTTAR has developed a Multi-Scale Cement Based Composite (MSCC). This composite material is strain hardening in tension and exhibits ultra-high strengths as well in both compression and tension. The main research objectives for the present paper are the determination of the strain hardening properties of the material : using a newly developed tensile test in conjunction with a finite-element-based inverse analysis, the input parameters of an (adapted) numerical model can be identified. Therefore, numerical simulations can be performed to describe the Bending Behaviour of a thin slab having a thickness representative of the corresponding industrial application. The main conclusions of this study are : The studied material clearly exhibits strain hardening in tension with a uniaxial tensile strength of about 20 MPa and a modulus of rupture of about 50 MPa. Elasto-plastic Behaviour with strain hardening is a relevant mechanical model (for the studied material) for designing (by the finite element method) structural elements behaving principally in Bending.
Roger L. Barker - One of the best experts on this subject based on the ideXlab platform.
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The Bending Behaviour of Plain-woven Fabrics Part III: The Case of Bilinear Thread-Bending Behaviour and the Effect of Fabric Set
Journal of The Textile Institute, 1990Co-Authors: Tushar K. Ghosh, S. K. Batra, Roger L. BarkerAbstract:In the preceding paper, an elastica-based computational model of the Bending Behaviour of plain-woven fabrics assuming linear Bending Behaviour of the constituent threads, together with appropriate computational techniques, was described. In the present paper, bilinear thread-Bending Behaviour, as proposed by Huang, is considered. In the first model, the threads were considered to be unset, i.e., if released from the fabric, they would straighten out completely, but in the present paper varying degrees of set are considered for both the earlier model and the present model. The computational scheme developed requires the minimum interference from the user to solve the associated boundary-value problems. Contrary to the earlier work of Skelton and Schoppee, the model predicts an increase in contact forces at the thread-crossover points owing to increasing fabric curvature. This increase is found to be larger for fabrics with higher degrees of set and is in agreement with the observations made by G.M. Abbott...
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The Bending Behaviour of Plain-woven Fabrics Part I: A Critical Review
Journal of The Textile Institute, 1990Co-Authors: Tushar K. Ghosh, S. K. Batra, Roger L. BarkerAbstract:The mechanics of the Bending of yarns and woven fabrics have received considerable attention in the literature. Efforts have been made to obtain analytical relations between yarn-Bending Behaviour and constituent-fibre properties. In the case of fabrics, the objectives have been to obtain analytical relations between fabric-Bending Behaviour and constituent-fibre Behaviour or yarn Behaviour, on the assumption of a given geometrical disposition of fibres or yarns in the fabric. In this paper, a review of these efforts is made. Comparisons of the theoretical models with available experimental observations are discussed.
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The Bending Behaviour of Plain-woven Fabrics Part II: The Case of Linear Thread-Bending Behaviour
Journal of The Textile Institute, 1990Co-Authors: Tushar K. Ghosh, S. K. Batra, Roger L. BarkerAbstract:In the preceding paper, a critical review of the state of knowledge of the Bending Behaviour of yarns and woven fabrics was reported. In the present one, an elastica-based computational model of plain-woven fabrics in pure Bending is developed. The thread moment/curvature relation is considered to be linear. Various contact conditions at the thread-crossover points are also considered. The threads are further considered to be unset, i.e., if released from the fabric, they would be completely uncrimped. The computational scheme developed requires the minimum interference from the user to solve the associated boundary-value problems.
Marco Di Prisco - One of the best experts on this subject based on the ideXlab platform.
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analytical and numerical prediction of the Bending Behaviour of textile reinforced concrete sandwich beams
Journal of building engineering, 2018Co-Authors: Isabella Giorgia Colombo, Matteo Colombo, Marco Di Prisco, Farhang PouyaeiAbstract:Abstract This paper concerns the investigation of the Behaviour of sandwich beams previously tested in four point Bending through analytical and numerical models. Modelling is a fundamental resource to predict the mechanical response of the element and to investigate the mechanisms that act during the evolution of the test. The sandwich beams here taken into account are characterised by external textile reinforced concrete (TRC) layers and an insulation material (expanded polystyrene, EPS) able to transfer shear stresses. Bond between the layers is obtained during production thanks to an in-pressure casting technique, and no particular device is used in order to transfer shear stresses between the layers. Two beam slenderness values are taken into account. An analytical and a numerical approach have been used in order to predict the experimental Behaviour: concerning the analytical approach, a model based on the Stamm and Witte sandwich theory has been developed including material non-linearity; concerning the numerical analysis, a finite element (FE) model has been built in ABAQUS including material and geometry non-linearity. The assumption of perfect bond is used in both cases. The non-linear analytical and finite element models have been validated, as a good agreement with experimental results has been achieved. The experimental identification of material parameters - TRC in tension, mortar in compression and EPS in tension, compression and shear - is crucial for the definition of proper constitutive laws for the models and is here presented and discussed. For both approaches, the assumptions of modelling TRC in Bending as homogeneous and assuming perfect bond between TRC and EPS (even when Behaviour becomes highly non-linear) have been proved to be reliable. Analytical and FEM results show that EPS non-linear Behaviour and TRC membrane and Bending Behaviour govern the response. The FE analysis also highlights the mechanisms involved in specimen failure.
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Bending Behaviour of textile reinforced concrete sandwich beams
Construction and Building Materials, 2015Co-Authors: Isabella Giorgia Colombo, Matteo Colombo, Marco Di PriscoAbstract:Abstract A prefabricated concrete sandwich panel, with insulating material acting as a structural layer able to transfer the shear stresses, is discussed. The use of an in-pressure casting technique allows to avoid the use of glue and to prevent the debonding between the layers thanks to the good bond obtained during the production. Sandwich beams characterized by a thick internal expanded polystyrene foam core and by two thin external Alkali-Resistant glass Textile Reinforced Concrete layers are experimentally investigated according to four point Bending scheme. The significant role played by the tangential non linear Behaviour of the EPS foam is shown.
