5-9 September 2016
Prague Congress Centre
Europe/Prague timezone

P2.152 Structural analysis of the back supporting structure of the DEMO WCLL outboard blanket

6 Sep 2016, 14:20
1h 40m
Foyer 2A (2nd floor), 3A (3rd floor) (Prague Congress Centre)

Foyer 2A (2nd floor), 3A (3rd floor)

Prague Congress Centre

5. května 65, Prague, Czech Republic
Board: 152
Poster H. Fuel Cycle and Breeding Blankets P2 Poster session

Speaker

Maria Lorena Richiusa (Department of Energy)

Description

Within the framework of EUROfusion R&D activities an intense research campaign has been carried out at the University of Palermo, in close cooperation with ENEA Brasimone, in order to investigate the thermo-mechanical performances of the Back-Supporting Structure (BSS) outboard segment of the DEMO Water-Cooled Lithium Lead breeding blanket (WCLL). In particular, the configuration of the BSS outboard segment, purposely set-up by the WCLL project team during 2015 according to the blanket “multi-module system” concept, has been taken into account in order to study its steady state thermo-mechanical behaviour, paying attention to the simulation of both modules-BSS and BSS-vacuum vessel attachment strategies and concepts. The research campaign has been mainly intended to investigate the thermo-mechanical performances of the BSS outboard segment when subjected to both the thermo-mechanical and electro-magnetic loads it is foreseen to undergo under particularly critical steady state loading conditions. A theoretical-numerical approach, based on the Finite Element Method (FEM), has been followed and the qualified ABAQUS v. 6.14 commercial FEM code has been adopted. Thermo-mechanical results have been assessed in order to verify their compliance with the design criteria foreseen for the structural material. To this purpose, a stress linearization procedure has been performed along the most critical paths located within the highly stressed BSS regions, in order to check the fulfilment of the rules prescribed by the RCC-MRx safety code. Results obtained are herewith presented and critically discussed, highlighting the open issues and suggesting the pertinent modifications to the BSS geometric design aimed to obtain the complete fulfilment of the prescribed safety criteria.

Co-authors

Alessandro Del Nevo (ENEA C.R. Brasimone, 40032 Camugnano (BO), Italy) Gaetano Bongiovi (Department of Energy, Information Engineering and Mathematical Models, University of Palermo, Viale delle Scienze, Edificio 6, 90128, Palermo, Italy) Maria Lorena Richiusa (Department of Energy, Information Engineering and Mathematical Models, University of Palermo, Viale delle Scienze, Edificio 6, 90128, Palermo, Italy) Pierluigi Chiovaro (Department of Energy, Information Engineering and Mathematical Models, University of Palermo, Viale delle Scienze, Edificio 6, 90128, Palermo, Italy) Pietro Alessandro Di Maio (Department of Energy, Information Engineering and Mathematical Models, University of Palermo, Viale delle Scienze, Edificio 6, 90128, Palermo, Italy) Pietro Arena (Department of Energy, Information Engineering and Mathematical Models, University of Palermo, Viale delle Scienze, Edificio 6, 90128, Palermo, Italy) Rosario Giammusso (ENEA C.R. Brasimone, 40032 Camugnano (BO), Italy)

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