Thermomechanical Analysis for an All-Tungsten ARIES Divertor

摘要: AbstractThe ARIES team is currently proposing two tungsten divertor concepts for its tokamak designs and has performed extensive analyses to optimize their thermal structural performance. Because of the high operating temperatures low ductility tungsten, creep fracture will be important failure mechanisms consider. This paper presents a series finite element addressing viable ranges these plate with respect fracture. For fracture, J-integral, path-independent contour integral that estimates strain energy release rate crack assumed geometry, used address propagation. Elliptical surface cracks are introduced both inside outside coolant channel, steady-state calculations carried out full-power cold shutdown conditions. It determined critical on channel highest stress intensities at full-p...