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| 100 | 1 | _ | |a Heuer, Simon |0 P:(DE-Juel1)162434 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Aiming at understanding thermo-mechanical loads in the first wall of DEMO: Stress–strain evolution in a Eurofer-tungsten test component featuring a functionally graded interlayer |
| 260 | _ | _ | |a New York, NY [u.a.] |c 2018 |b Elsevier |
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| 520 | _ | _ | |a For the future fusion demonstration power plant, DEMO, several blanket designs are currently under consideration.Despite geometric and operational differences, all designs suggest a first wall (FW), in which tungsten(W) armour is joined to a structure made of Reduced Activation Ferritic Martensitic (RAFM) steel. In thermomechanicalanalyses of breeding blankets, this joint has received limited attention. In order to provide a basis forbetter understanding of thermally induced stresses and strains in the FW, the thermo-mechanical behaviour of awater-cooled test component is explored in the current contribution. The model aims at providing a simplegeometry that allows straightforward comparison of numerical and experimental results, while trying to keepboundary conditions as realistic as possible. A test component with direct RAFM steel-W joint, and a testcomponent with a stress-redistributing, functionally graded RAFM steel/W interlayer in the joint is considered inthe current contribution. The analyses take production- and operation-related loads into account. Following adetailed analysis of the evolution of stress components and strain in the model, a parameter study with respect togeometric specifications and loads is presented.The analyses show that, even in a small test component, a direct RAFM steel-W joint causes enormous plasticdeformation. The implementation of a functionally graded interlayer reduces stresses and strains significantly,but vertical normal stresses at the joint's circumference remain considerable. With the component geometryconsidered here, the graded interlayer should be at least 1mm thick and contain 4 sublayers to appropriatelyredistribute stresses. Beyond a component width of 14 mm, stresses increase strongly, which may pose a risk tothe applicability of large-scale FW components, too. |
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| 536 | _ | _ | |a EUROfusion - Implementation of activities described in the Roadmap to Fusion during Horizon 2020 through a Joint programme of the members of the EUROfusion consortium (633053) |0 G:(EU-Grant)633053 |c 633053 |f EURATOM-Adhoc-2014-20 |x 1 |
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| 700 | 1 | _ | |a Weber, Thomas |0 P:(DE-HGF)0 |b 1 |e Collaboration author |
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| 700 | 1 | _ | |a Coenen, Jan Willem |0 P:(DE-Juel1)2594 |b 3 |e Collaboration author |
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| 700 | 1 | _ | |a Linsmeier, Christian |0 P:(DE-Juel1)157640 |b 5 |e Collaboration author |
| 773 | _ | _ | |a 10.1016/j.fusengdes.2018.07.011 |g Vol. 135, p. 141 - 153 |0 PERI:(DE-600)1492280-0 |p 141 - 153 |t Fusion engineering and design |v 135 |y 2018 |x 0920-3796 |
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