Structural analysis of DEMO divertor cassette body and design study based on RCC-MRx

Frosi, P.; Bachmann, Christian; Gironimo, Giuseppe Di; Mazzone, G.; Marzullo, D.; You, J.-H.

doi:10.1016/j.fusengdes.2017.02.062

Cited by 8 publications

(8 citation statements)

References 8 publications

(17 reference statements)

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“…As obtained previously [4][5], the thermal loads play a relevant role: indeed in the fig. 5 there are the Nose (left), the cassette (center) and the knuckle pins (right) equivalent stresses: it can be seen that the stress level either of the Nose or the knuckle pins is relevant (350 -500 MPa).…”

Section: Thermal Loadssupporting

confidence: 75%

“…This set of data has been adopted for the coupledfield thermal-fluid dynamic analysis reported in [11][12]. Unlike from the previous works [4][5], the thermal power has been applied exactly the same: so the temperature gradients have been simulated in a more realistic manner (and more adequate for the structural analysis purposes): in fig. 3 there is the obtained temperature contour plot.…”

Section: Thermal Loads Inputmentioning

confidence: 99%

“…12-13. The assessment has been performed only for un-irradiated conditions for the same reasons reported in [4][5]. This set of analysis has been executed adopting a linear elastic material properties.…”

Section: Rcc-mrx Simplified Assessmentmentioning

confidence: 99%

“…This activity began two years ago with provisional outcomes of the structural analysis that, in turn, was using the preparatory analysis results obtained with some approximations. This work can be inserted in the nuclear fusion frame depicted in [1][2][3] and a summary of the previous study can be found in [4][5][6]. The whole design activity has been improved either in the preparatory studies (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Further improvements in the structural analysis of DEMO Divertor Cassette body and design assessment according to RCC-MRx

Frosi

Maio

Marzullo

et al. 2019

Fusion Engineering and Design

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(PPPT) program. This activity started two years ago and its preliminary results were published in previous papers. It has been divided in some areas defined by the similarity of the matters they contain: the structural analysis, of utmost importance, has been preceded by a preliminary phase, like the geometry definition or the thermal and the electric-magnetic analysis for loads evaluation; then the structural analysis has been finally confirmed with further evaluations related to excessive deformation or plastic instability. This paper discusses the improvements adopted either in the preliminary analysis or in the main structural analysis. Specifically it highlights the introduction of the thermal and electromagnetic loads application in terms of a detailed spatial distribution that is now available. More the supports have been introduced in the model and their structural behavior has been investigated considering their interaction with the cassette. The structural assessment, according to the Design and Construction Rules for Mechanical Components of Nuclear Installation (RCC-MRx), has been performed either for the cassette or for the attachments: for the former it is positive while for the latter case serious limitations have been found.

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Section: Thermal Loadssupporting

confidence: 75%

Section: Thermal Loads Inputmentioning

confidence: 99%

Section: Rcc-mrx Simplified Assessmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Further improvements in the structural analysis of DEMO Divertor Cassette body and design assessment according to RCC-MRx

Frosi

Maio

Marzullo

et al. 2019

Fusion Engineering and Design

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“… New interfaces with breeding blanket and vacuum vessel  Inlet cooling water at 3.5 MPa -180°C  The PFCs cooling system configuration selected during the first pre-concept design phase [3] to be integrated in the new cassette shape  Eurofer97 material for divertor cassette: ribs thickness 20 mm; external plate thickness 30 mm (considering the stress analyses performed in the first phase [6]). (Fig.…”

Section: Demo Divertor Cassette Body Designmentioning

confidence: 99%

Progress in the pre-conceptual CAD engineering of European DEMO divertor cassette

Marzullo

Bachmann²,

Coccorese

et al. 2019

Fusion Engineering and Design

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This paper presents the recent progress in the pre-conceptual design activities for the EU-DEMO divertor Cassette Body, performed in the framework of the work package "Divertor" of the EUROfusion Power Plant Physics & Technology (PPPT) program. According to Systems Engineering Principles, the divertor CAD model is reviewed, considering the updates in the DEMO configuration model presented by the Programme Management Unit (PMU) in 2017. The design parameters affected by these changes and their impact on the divertor design and on the interfaced systems are analysed. Then, the paper focuses on the integration on the new cassette geometry of the divertor subsystems. This includes the design of a "shielding liner" for cassette body and Vacuum Vessel protection, as well as the development of the cassette body-to-Vacuum Vessel fixation system. The design activities related to these main subsystems are discussed in detail, in terms of CAD model and thermo-mechanical calculations.

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EU-DEMO divertor: Cassette design and PFCs integration at pre-conceptual stage

Bonavolontà

Bachmann²,

Coccorese

et al. 2020

Fusion Engineering and Design

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Structural analysis of DEMO divertor cassette body and design study based on RCC-MRx

Cited by 8 publications

References 8 publications

Further improvements in the structural analysis of DEMO Divertor Cassette body and design assessment according to RCC-MRx

Further improvements in the structural analysis of DEMO Divertor Cassette body and design assessment according to RCC-MRx

Progress in the pre-conceptual CAD engineering of European DEMO divertor cassette

EU-DEMO divertor: Cassette design and PFCs integration at pre-conceptual stage

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