The Experts below are selected from a list of 2514 Experts worldwide ranked by ideXlab platform

Wang Shu-ming - One of the best experts on this subject based on the ideXlab platform.

Alain Gasser - One of the best experts on this subject based on the ideXlab platform.

  • Thermomechanical computation of Refractory Lining accounting for chemical swelling
    2013
    Co-Authors: Tarek Merzouki, Eric Blond, Nicolas Schmitt, Emmanuel De Bilbao, Alain Gasser
    Abstract:

    This paper aims to illustrate current possibility to develop fully 3D finite element simulations accounting simultaneously for thermal, mechanical and chemistry phenomena in order to give a help for the design of Refractory Linings. Illustration is focused on the case of SiC-based Refractory Lining used in Waste to Energy Plant (WTEP). A multi-physical coupled analysis is proposed to elaborate degradation roots and to build a dedicated thermo-chemo-mechanical model. This model accounts for the reactive transport of oxygen through the gases within the porosity, and for the swelling and porosity clogging up induced by SiC oxidation. Two geometries of Lining tiles are modeled and a computation of one year in-service is performed. It is demonstrated that the simulations reproduce well the localization of the degradations and allow highlighting the geometry effects on the Lining behavior.

  • MODELLING OF THE SWELLING OF SIC-BASED Refractory Lining USED IN WASTE-TO-ENERGY PLANTS
    2012
    Co-Authors: Tarek Merzouki, Alain Gasser, Eric Blond, Nicolas Schmitt, Thierry Cutard, E. De Bilbao
    Abstract:

    This work provides a computational model to predict the life-span of SiC based refractories used in waste to energy plant (WTE) Linings. In this application, oxygen gas present in the atmosphere diffuses through the porosity and reacts with the re- fractory producing silica (SiO2). This new phase clogs gradually the pores and causes swelling of the Refractory Lining. The pro- posed thermo-chemo-mechanical model which simulates these phenomena is briefly summarized. The results obtained from the model implemented in a F.E code prove the ability of the model to reproduce qualitatively the swelling of post-mortem bricks taken from WTE Linings.

  • Modelling of the Swelling of SiC-Based Refractory Lining Used in Waste-to-Energy Plants
    Volume 4: Advanced Manufacturing Processes; Biomedical Engineering; Multiscale Mechanics of Biological Tissues; Sciences Engineering and Education; Mu, 2012
    Co-Authors: Tarek Merzouki, Alain Gasser, Eric Blond, Nicolas Schmitt, Thierry Cutard, Emmanuel De Bilbao
    Abstract:

    This work provides a computational model of the chemo-mechanical behavior of based refractories used in waste to energy plant (WTE) Linings. In this application, oxygen gas present in the atmosphere diffuses through the porosity and reacts with the Refractory producing silica (SiO2). This new phase clogs gradually the pores and causes swelling of the Refractory Lining. The proposed thermo-chemo-mechanical model which simulates these phenomena is briefly summarized. The results obtained from the model implemented in a F.E code prove the ability of the model to reproduce qualitatively the swelling of post-mortem bricks taken from WTE Linings.Copyright © 2012 by ASME

  • Modelling of joint effects on Refractory Lining behaviour
    Journal of Materials: Design and Applications, 2004
    Co-Authors: Alain Gasser, Kristin Terny-rebeyrotte, Philippe Boisse
    Abstract:

    Expansion joints play an important role in Refractory Linings as they reduce stresses during heating. It is therefore necessary to take them into account in a mechanical analysis. In the case where the Lining is a masonry construction (made up of bricks), it would require an excessive number of elements to model each brick and joint. The proposed solution is to replace the masonry with a material that has the same behaviour (or very near) as masonry. Since it is difficult to perform experimental tests on a set of bricks (to identify the parameters of the equivalent material), these loads were simulated on an elementary cell using a model developed at a local scale (scale of the components, bricks and joints). At this scale, the joints are represented as contacts (with normal and tangential behaviour). The parameters of a simplified equivalent material were obtained by an inverse identification. This model was validated by a thermomechanical test on a real structure.

Tarek Merzouki - One of the best experts on this subject based on the ideXlab platform.

  • Thermomechanical computation of Refractory Lining accounting for chemical swelling
    2013
    Co-Authors: Tarek Merzouki, Eric Blond, Nicolas Schmitt, Emmanuel De Bilbao, Alain Gasser
    Abstract:

    This paper aims to illustrate current possibility to develop fully 3D finite element simulations accounting simultaneously for thermal, mechanical and chemistry phenomena in order to give a help for the design of Refractory Linings. Illustration is focused on the case of SiC-based Refractory Lining used in Waste to Energy Plant (WTEP). A multi-physical coupled analysis is proposed to elaborate degradation roots and to build a dedicated thermo-chemo-mechanical model. This model accounts for the reactive transport of oxygen through the gases within the porosity, and for the swelling and porosity clogging up induced by SiC oxidation. Two geometries of Lining tiles are modeled and a computation of one year in-service is performed. It is demonstrated that the simulations reproduce well the localization of the degradations and allow highlighting the geometry effects on the Lining behavior.

  • MODELLING OF THE SWELLING OF SIC-BASED Refractory Lining USED IN WASTE-TO-ENERGY PLANTS
    2012
    Co-Authors: Tarek Merzouki, Alain Gasser, Eric Blond, Nicolas Schmitt, Thierry Cutard, E. De Bilbao
    Abstract:

    This work provides a computational model to predict the life-span of SiC based refractories used in waste to energy plant (WTE) Linings. In this application, oxygen gas present in the atmosphere diffuses through the porosity and reacts with the re- fractory producing silica (SiO2). This new phase clogs gradually the pores and causes swelling of the Refractory Lining. The pro- posed thermo-chemo-mechanical model which simulates these phenomena is briefly summarized. The results obtained from the model implemented in a F.E code prove the ability of the model to reproduce qualitatively the swelling of post-mortem bricks taken from WTE Linings.

  • Modelling of the Swelling of SiC-Based Refractory Lining Used in Waste-to-Energy Plants
    Volume 4: Advanced Manufacturing Processes; Biomedical Engineering; Multiscale Mechanics of Biological Tissues; Sciences Engineering and Education; Mu, 2012
    Co-Authors: Tarek Merzouki, Alain Gasser, Eric Blond, Nicolas Schmitt, Thierry Cutard, Emmanuel De Bilbao
    Abstract:

    This work provides a computational model of the chemo-mechanical behavior of based refractories used in waste to energy plant (WTE) Linings. In this application, oxygen gas present in the atmosphere diffuses through the porosity and reacts with the Refractory producing silica (SiO2). This new phase clogs gradually the pores and causes swelling of the Refractory Lining. The proposed thermo-chemo-mechanical model which simulates these phenomena is briefly summarized. The results obtained from the model implemented in a F.E code prove the ability of the model to reproduce qualitatively the swelling of post-mortem bricks taken from WTE Linings.Copyright © 2012 by ASME

Nicolas Schmitt - One of the best experts on this subject based on the ideXlab platform.

  • Thermomechanical computation of Refractory Lining accounting for chemical swelling
    2013
    Co-Authors: Tarek Merzouki, Eric Blond, Nicolas Schmitt, Emmanuel De Bilbao, Alain Gasser
    Abstract:

    This paper aims to illustrate current possibility to develop fully 3D finite element simulations accounting simultaneously for thermal, mechanical and chemistry phenomena in order to give a help for the design of Refractory Linings. Illustration is focused on the case of SiC-based Refractory Lining used in Waste to Energy Plant (WTEP). A multi-physical coupled analysis is proposed to elaborate degradation roots and to build a dedicated thermo-chemo-mechanical model. This model accounts for the reactive transport of oxygen through the gases within the porosity, and for the swelling and porosity clogging up induced by SiC oxidation. Two geometries of Lining tiles are modeled and a computation of one year in-service is performed. It is demonstrated that the simulations reproduce well the localization of the degradations and allow highlighting the geometry effects on the Lining behavior.

  • MODELLING OF THE SWELLING OF SIC-BASED Refractory Lining USED IN WASTE-TO-ENERGY PLANTS
    2012
    Co-Authors: Tarek Merzouki, Alain Gasser, Eric Blond, Nicolas Schmitt, Thierry Cutard, E. De Bilbao
    Abstract:

    This work provides a computational model to predict the life-span of SiC based refractories used in waste to energy plant (WTE) Linings. In this application, oxygen gas present in the atmosphere diffuses through the porosity and reacts with the re- fractory producing silica (SiO2). This new phase clogs gradually the pores and causes swelling of the Refractory Lining. The pro- posed thermo-chemo-mechanical model which simulates these phenomena is briefly summarized. The results obtained from the model implemented in a F.E code prove the ability of the model to reproduce qualitatively the swelling of post-mortem bricks taken from WTE Linings.

  • Modelling of the Swelling of SiC-Based Refractory Lining Used in Waste-to-Energy Plants
    Volume 4: Advanced Manufacturing Processes; Biomedical Engineering; Multiscale Mechanics of Biological Tissues; Sciences Engineering and Education; Mu, 2012
    Co-Authors: Tarek Merzouki, Alain Gasser, Eric Blond, Nicolas Schmitt, Thierry Cutard, Emmanuel De Bilbao
    Abstract:

    This work provides a computational model of the chemo-mechanical behavior of based refractories used in waste to energy plant (WTE) Linings. In this application, oxygen gas present in the atmosphere diffuses through the porosity and reacts with the Refractory producing silica (SiO2). This new phase clogs gradually the pores and causes swelling of the Refractory Lining. The proposed thermo-chemo-mechanical model which simulates these phenomena is briefly summarized. The results obtained from the model implemented in a F.E code prove the ability of the model to reproduce qualitatively the swelling of post-mortem bricks taken from WTE Linings.Copyright © 2012 by ASME

Eric Blond - One of the best experts on this subject based on the ideXlab platform.

  • Thermomechanical computation of Refractory Lining accounting for chemical swelling
    2013
    Co-Authors: Tarek Merzouki, Eric Blond, Nicolas Schmitt, Emmanuel De Bilbao, Alain Gasser
    Abstract:

    This paper aims to illustrate current possibility to develop fully 3D finite element simulations accounting simultaneously for thermal, mechanical and chemistry phenomena in order to give a help for the design of Refractory Linings. Illustration is focused on the case of SiC-based Refractory Lining used in Waste to Energy Plant (WTEP). A multi-physical coupled analysis is proposed to elaborate degradation roots and to build a dedicated thermo-chemo-mechanical model. This model accounts for the reactive transport of oxygen through the gases within the porosity, and for the swelling and porosity clogging up induced by SiC oxidation. Two geometries of Lining tiles are modeled and a computation of one year in-service is performed. It is demonstrated that the simulations reproduce well the localization of the degradations and allow highlighting the geometry effects on the Lining behavior.

  • MODELLING OF THE SWELLING OF SIC-BASED Refractory Lining USED IN WASTE-TO-ENERGY PLANTS
    2012
    Co-Authors: Tarek Merzouki, Alain Gasser, Eric Blond, Nicolas Schmitt, Thierry Cutard, E. De Bilbao
    Abstract:

    This work provides a computational model to predict the life-span of SiC based refractories used in waste to energy plant (WTE) Linings. In this application, oxygen gas present in the atmosphere diffuses through the porosity and reacts with the re- fractory producing silica (SiO2). This new phase clogs gradually the pores and causes swelling of the Refractory Lining. The pro- posed thermo-chemo-mechanical model which simulates these phenomena is briefly summarized. The results obtained from the model implemented in a F.E code prove the ability of the model to reproduce qualitatively the swelling of post-mortem bricks taken from WTE Linings.

  • Modelling of the Swelling of SiC-Based Refractory Lining Used in Waste-to-Energy Plants
    Volume 4: Advanced Manufacturing Processes; Biomedical Engineering; Multiscale Mechanics of Biological Tissues; Sciences Engineering and Education; Mu, 2012
    Co-Authors: Tarek Merzouki, Alain Gasser, Eric Blond, Nicolas Schmitt, Thierry Cutard, Emmanuel De Bilbao
    Abstract:

    This work provides a computational model of the chemo-mechanical behavior of based refractories used in waste to energy plant (WTE) Linings. In this application, oxygen gas present in the atmosphere diffuses through the porosity and reacts with the Refractory producing silica (SiO2). This new phase clogs gradually the pores and causes swelling of the Refractory Lining. The proposed thermo-chemo-mechanical model which simulates these phenomena is briefly summarized. The results obtained from the model implemented in a F.E code prove the ability of the model to reproduce qualitatively the swelling of post-mortem bricks taken from WTE Linings.Copyright © 2012 by ASME