Observatorio de I+D+i UPM

Memorias de investigación
Thesis:
Etude numérique du renforcement et de la réparation des silos par les matériaux composites (Numerical study of the reinforcement and repair of silos by composite materials)
Year:2016
Research Areas
  • Agriculture,
  • Construction
Information
Abstract
This thesis presents, a numerical analysis of the reinforcement and reparation of steel slender silos having concentric hopper with carbon fiber-reinforced polymer (CFRP). The numerical model has been developed using the finite element method. The actions of the stored material over the silo wall were obtained by simultaneously modeling the silo, and the stored material. The interaction between both materials was properly simulated. The Drucker Prager elastoplastic criterion was used to define the behavior of the stored material. The simulations analyzed the influence of different reinforcement layers and their placement. In all cases, the effectiveness of the CFRP used for reinforcing and repairing steel slender silos was obtained. Indeed, a significant reduction of the circumferential and meridional stresses, especially for the bin ? hopper junction was also obtained. Taking into account the cost of the CFRP, a parametric analysis is then conducted to define the reinforced zone and the number of CFRP layers required to produce an optimized reinforcement. The results shows that the reduction rate obtained of stresses in the silo are about 30% compared to a silo with non-reinforced or repaired wall. Subsequently, an application of this approach was tested for the repair of damaged silos. Indeed, it seemed that, the reinforcement and the reparation with CFRP can be of interest for silos having suffered damage and alterations that induced a reduction in the thickness of their walls.
International
Si
Type
Doctoral
Mark Rating
Apto
Date
19/12/2016
Participants
  • Director: Kamel Djeghaba (Badji Mokhtar-Annaba University)
  • Director: Eutiquio Gallego Vazquez (UPM)
  • Autor: Latifa Louetri (Badji Mokhtar-Annaba University)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Edificación, Infraestructura y Proyectos en Ingeniería Rural y Medioambiental (EIPIRMA)
  • Departamento: Ingeniería Agroforestal
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)