Mechanical response and fatigue analysis of the first wall of the prometheus IFE reactor
- Univ. of California, Los Angeles, CA (United States)
Following the micro explosions in an Inertial Fusion Energy (IFE) reactor, the first wall structures are subjected to time-dependent mechanical and thermal loads, which result in stresses and displacements that vary with time. In the Prometheus IFE reactor the first wall is protected by a flowing thin film of liquid lead. The mechanical loading on the first wall includes two different mechanisms: (1) surface ablation momentum due to the early deposition of x-rays and the instantaneous evaporation of the protecting film, at the instant of the micro explosion, and (2) time dependent pressure due to propagating pressure waves that travel between the first wall and the center of the reactor chamber. Careful determination of the resulting stresses in the first wall structures helps choose and design these structures for maximum fatigue life time. In the present work, a solution of the equation of motion of the first wall structural elements and the associated stresses and displacements is presented. It is found that segmentation of the first wall into smaller plates minimizes the resulting stresses and, in turn, prolongs the fatigue life time of the first wall.
- OSTI ID:
- 196928
- Report Number(s):
- CONF-940664-; TRN: 95:005767-0097
- Resource Relation:
- Conference: ISFNT-3: international symposium on fusion nuclear technology, Los Angeles, CA (United States), 27 Jun - 1 Jul 1994; Other Information: PBD: 1994; Related Information: Is Part Of Third international symposium on fusion nuclear technology; PB: 362 p.
- Country of Publication:
- United States
- Language:
- English
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