Evaluation of Material Design Limits for TBM Applications

Author

Sunyk, R. ; Aktaa, J.

Author_Institution

Inst. for Mater. Res. II, Forschungszentrum Karlsruhe GmbH

fYear

2005

fDate

Sept. 2005

Firstpage

1

Lastpage

4

Abstract

The aim of the work presented is, firstly, an evaluation of existing design rules considered for austenitic steels exhibiting hardening cycle by cycle contrary to the reduced activation ferritic-martensitic steels (RAFM), which soften under cyclic loading. Secondly, it is a definition of the range of operation temperatures and loads for the current design of the test blanket module (TBM). Results of cycling tests of the EUROFER 97 performed by J. Aktaa & R. Schmitt have been thereby used to adjust material parameters needed for an ABAQUS-own combined non-linear isotropic-kinematic hardening model. Furthermore, the visco-plastic material model considering material damage implemented recently as an ABAQUS user material (UMAT) has been applied for simulations and the results have been compared with those obtained using the material model mentioned above

Keywords

Tokamak devices; austenitic steel; fusion reactor blankets; fusion reactor design; martensitic steel; viscoplasticity; ABAQUS user material; ABAQUS-own nonlinear isotropic-kinematic hardening model; EUROFER 97; ITER test blanket module; TBM application; austenitic steel; cyclic loading; cycling test; material damage; material design limits; material parameters; operation temperature; reduced activation ferritic-martensitic steel; viscoplastic material model; Building materials; Capacitive sensors; Electronic mail; Materials testing; Performance evaluation; Softening; Steel; Temperature distribution; Thermal loading; Thermal stresses; EUROFER 97; cyclic softening; high-temperature design rules; ratcheting; reduced activation ferriticmartensitic steel; stress categoriuation; structural design code; test blanket module;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering 2005, Twenty-First IEEE/NPS Symposium on

Conference_Location

Knoxville, TN

Print_ISBN

0-4244-0150-X

Electronic_ISBN

0-4244-0150-X

Type

conf

DOI

10.1109/FUSION.2005.252900

Filename

4018934