The development of a stress analysis code for nuclear graphite components in gas-cooled reactors

Effect of large deformation on creep property evaluation by small-specimen bending tests

“…The elastic modulus of coke filler was estimated using a zero porosity overall modulus and data from radiolytic oxidation experiments in [2] and the resultant value is taken for this analysis. Due to insufficient data, Poisson's ratio of aggregate graphite from [8] is taken as the value for both filler and binder. The material properties are listed in Table 1.…”

“…β t and β n are linked to the aggregate Poisson's ratio as shown in Eq (7) and (8), and aggregate Possion's ratio can be expressed in terms of the bulk and shear moduli as shown in Eq (9). For known elastic properties of N phases, Eq (5) to (9) can be solved simultaneously to obtain elastic properties of the whole media.…”

The Stochastic Finite Element Method for Nuclear Applications

“…The material properties chosen for these realisations were obtained from [11] (Table 1); the material properties correspond to the average values for isotropic graphite. The standard deviation for the coefficient of thermal expansion was estimated by the authors.…”

Finite element modelling of the effect of temperature and neutron dose on the fracture behaviour of nuclear reactor graphite bricks

“…Graphite bricks are interconnected using keys and keyways to form structures that allow for the movement of control rods and the loading and unloading of fuel [1]. These bricks undergo loading, from both radiation and high temperatures, as a direct result of the fission reaction.…”

“…A finite element (FE) approach is developed based on the hypothetical brick model developed by Tsang and Marsden [1] with a user defined material model. Without any mechanical loads, the material model derives a stress/strain constitutive relationship based on different physical mechanisms within graphite bricks.…”