A Thermomechanical Model of Coarse‐Grained Soils With Non‐Orthogonal Flow Rule

International Journal for Numerical and Analytical Methods in Geomechanics, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 9, 2025

ABSTRACT In geo‐energy engineering projects, temperature is an essential environmental variable, and accurately predicting its effect on the thermomechanical properties of geomaterials remains a challenge. Similar to fine‐grained soils, variation also crucial factor that affects stress‐strain response critical state behavior coarse‐grained soils. this study, model established for soils using theories from fractional plasticity. The evolution line with increasing can be well characterized by introducing thermal‐dependent parameter, then void‐ratio‐pressure parameter incorporates derived according temperature‐dependent state. plastic flow direction dilatancy function are obtained directly derivation modified elliptical yield describe nonassociated characteristics. Furthermore, thermal introduced into non‐orthogonal hardening modulus reflect state‐ behaviors. Comparative analysis experimental data predictions indicates reasonably predict drained shear characteristics under different temperatures, including strain‐hardening, strain‐softening, dilatancy, contraction, softening.

Language: Английский

Thermodynamics-based bounding surface model for gas hydrate-bearing sediments and its numerical implementation

Computers and Geotechnics, Journal Year: 2025, Volume and Issue: 183, P. 107242 - 107242

Published: April 5, 2025

Language: Английский

A novel insight into the transition from plasticity to elasto-damage modelling in intact rocks

Computers and Geotechnics, Journal Year: 2024, Volume and Issue: 179, P. 107021 - 107021

Published: Dec. 30, 2024

Language: Английский