Numerical simulation of ceramic breeder pebble bed thermal creep behavior

Ying, Alice; Huang, Hulin; Abdou, Mohamed

doi:10.1016/s0022-3115(02)01276-x

Cited by 9 publications

(2 citation statements)

References 7 publications

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“…7 indicated that the numerical simulation by DEM Ying et al [12] using the B€ uhler effective macro-model was able to capture the trend of the experimental data concerning thermal creep characteristics; however, the absolute values would still need to be resolved by finding the correct material properties.…”

Section: Thermomechanic Interaction Of Breeding Pebble Beds and Sic/smentioning

confidence: 99%

Impact of material system thermomechanics and thermofluid performance on He-cooled ceramic breeder blanket designs with SiCf/SiC

Ying

Yokomine

Shimizu

et al. 2004

Journal of Nuclear Materials

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Section: Thermomechanic Interaction Of Breeding Pebble Beds and Sic/smentioning

confidence: 99%

Impact of material system thermomechanics and thermofluid performance on He-cooled ceramic breeder blanket designs with SiCf/SiC

Ying

Yokomine

Shimizu

et al. 2004

Journal of Nuclear Materials

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“…Whilst study on deformation mechanisms of packed beds is limited, it has been proposed that deformation can occur through either rearrangement of the particles, dislocation of the particles or elastic (reversible) deformation [13]. Creep effects on packed beds have not been widely investigated, and the contributing factors such as stress, temperature and time have not been established [14]. In addition to this, the conditions of the softening-melting test, and indeed the cohesive zone of the blast furnace, differ from the wax packed bed experimental test conditions as the temperature is constantly increasing and material is not held at a single temperature for a prolonged period of time.…”

Section: Introductionmentioning

confidence: 99%

Simulation of particle deformation within a compressed packed bed

Kempton

Pinson²,

Chew³

et al. 2017

Powder Technology

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Deformation arising from softening-melting conditions in the blast furnace has provided a significant challenge to numerical modelling. In this paper, a sub-particle discrete element approach is used to simulate a bed of particles deforming under load at a constant temperature. Effects of temperature on material properties are established through the use of simulations of material under compression, with the results compared to experimental data. This was used as a starting point for the packed bed simulations at different temperatures, with the ratios between parameters maintained. Porosity within the final bed was used as a measure of the deformation, and compared to previous low temperature experimental work. The nature of the modelling technique allowed for visual analysis of the deformation of individual macro-particles within the packed bed. Numerical results for the stabilised final porosity were comparable for a variety of loads for a given set of parameters demonstrating that this technique is suitable for modelling plastically deformable granular materials.

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