Transient dynamics of the thermally induced deformation of sands

Coulibaly, Jibril B.; Loria, Alessandro F. Rotta

doi:10.1002/nag.3377

Cited by 4 publications

(1 citation statement)

References 70 publications

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“…4(b)) compared to thermal cycles with an amplitude of °C. This result is consistent with previous evidence obtained for glass spheres 1 and originates from more signi cant thermally induced particle deformations and interconnected variations in interparticle forces 44 .…”

Section: Temperature Amplitude Effectssupporting

confidence: 93%

Thermal ratcheting in granular materials with irregular particle shapes

Pan¹,

Gong²,

Loria³

2023

Preprint

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Granular materials with irregular particle shapes, such as sands, undergo a myriad of temperature variations in natural and engineered systems. However, the impacts of cyclic temperature variations on the mechanics of granular materials remain poorly understood. In this context, little is known about the mechanical response of such materials to cyclic temperature variations for central variables that characterize granular systems: particle shapes, applied stress levels, relative densities, and temperature amplitudes. This paper presents advanced laboratory experiments to explore the impacts of cyclic temperature variations on the mechanics of sands. The results show that cyclic temperature variations applied to sands induce thermal ratcheting: the cumulative growth of irreversible bulk deformations of such materials due to microstructural rearrangements caused by thermal expansions and contractions of constituting particles. The deformations of granular materials caused by thermal ratcheting strongly depend on particle shape, stress level, relative density, and temperature amplitude. These deformations are limited for individual thermal cycles but accumulate and become significant for multiple thermal cycles. Thermal ratcheting leads to substantial compaction in sands and other granular materials, which can affect various natural and engineered systems.

show abstract

Section: Temperature Amplitude Effectssupporting

confidence: 93%

Thermal ratcheting in granular materials with irregular particle shapes

Pan¹,

Gong²,

Loria³

2023

Preprint

View full text Add to dashboard Cite

show abstract

SANISAND-MS-T: Simple ANIsotropic SAND model with Memory Surface for Temperature effects

Pan,

Rotta Loria

2024

Computers and Geotechnics

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Thermal shakedown in granular materials with irregular particle shapes

Pan,

Gong,

Rotta Loria

2024

Sci Rep

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Granular materials with irregular particle shapes undergo a myriad of temperature variations in natural and engineered systems. However, the impacts of cyclic temperature variations on the mechanics of granular materials remain poorly understood. Specifically, little is known about the response of granular materials to cyclic temperature variations as a function of the following central variables: particle shape, applied stress level, relative density, and temperature amplitude. This paper presents advanced laboratory experiments to explore the impacts of cyclic temperature variations on the mechanics of granular materials, with a focus on sands. The results show that cyclic temperature variations applied to sands induce thermal shakedown: the accumulation of irreversible bulk deformations due to microstructural rearrangements caused by thermal expansions and contractions of the constituting particles. The deformation of sands caused by thermal shakedown strongly depends on particle shape, stress level, relative density, and temperature amplitude. This deformation is limited for individual thermal cycles but accumulates and becomes significant for multiple thermal cycles, leading to substantial compaction in sands and other granular materials, which can affect various natural and engineered systems.

show abstract

Transient dynamics of the thermally induced deformation of sands

Cited by 4 publications

References 70 publications

Thermal ratcheting in granular materials with irregular particle shapes

Thermal ratcheting in granular materials with irregular particle shapes

SANISAND-MS-T: Simple ANIsotropic SAND model with Memory Surface for Temperature effects

Thermal shakedown in granular materials with irregular particle shapes

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