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Communication Dans Un Congrès Année : 2014

Thermo-mechanical modelling of refractory masonries

Eric Blond
Nicolas Gallienne
  • Fonction : Auteur
  • PersonId : 936774
  • IdRef : 182710025
Jean-Luc Daniel
  • Fonction : Auteur
  • PersonId : 960660
Sido Sinnema
  • Fonction : Auteur
  • PersonId : 924661

Résumé

Many refractory linings of structures used in steel making industry are made of masonries containing joints with or without mortar between bricks. These joints play an important role in the thermo-mechanical behaviour of the masonry. So, it is necessary to take them into account during a numerical computation of a structure containing a refractory masonry. Since such masonries are built with hundreds of bricks, it is very time expensive to model each joint and each brick in a finite element computation. Therefore, the masonries are modelled by a homogeneous material that has a behaviour equivalent to that of the set of brick and joint. The thermo-mechanical properties of this equivalent material were determined using a periodic homogenization method. They are temperature dependent and depend also on the joint states (open or closed in the two directions). This approach was used in different applications: - A simplified steel ladle to show the influence of different parameters: presence or not of joints, dry joints/mortar joints, thickness of mortar joints, masonry design (parallel, fish bone or radial), refractory material properties, - A hearth of a blast furnace to determine the stresses in the outer steel shell, - A heating wall of a coke oven to determine the maximum pressure that the coal can apply on it during cocking. This built tool brings a help for the design of refractory masonry linings.
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Dates et versions

hal-01073016 , version 1 (08-10-2014)

Identifiants

  • HAL Id : hal-01073016 , version 1

Citer

Alain Gasser, Eric Blond, Nicolas Gallienne, Jean-Luc Daniel, Sido Sinnema. Thermo-mechanical modelling of refractory masonries. CIMTEC, Jun 2014, Montecatini, Italy. ⟨hal-01073016⟩
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