Spatial–temporal evolution and countermeasures for coal and gas outbursts represented as a dynamic system
The occurrence of dangerous coal and gas outbursts seriously threaten safety in
underground coal mining. Thus, defining the spatio-temporal evolution of the mechanisms …
underground coal mining. Thus, defining the spatio-temporal evolution of the mechanisms …
A return mapping algorithm based on the hyper dual step derivative approximation for elastoplastic models
Accurately evaluating derivatives poses a key challenge when numerically implementing
complex constitutive models. This work presents an implicit stress update algorithm that …
complex constitutive models. This work presents an implicit stress update algorithm that …
An elastoplastic damage constitutive model for capturing dynamic enhancement effect of rock and concrete through equivalent stress history
The strength enhancement effect of rock and concrete under dynamic loading is one of the
significant response characteristics differing from quasi-static loading. Typically, current …
significant response characteristics differing from quasi-static loading. Typically, current …
Formulation and implementation of an isotropic plasticity model enriched with shift stress and fractional flow rule
X Huang, Y Sun, W Sumelka, Y Gao - Acta Geotechnica, 2024 - Springer
Clay and sand were often treated as two different materials that required respective
constitutive models to capture the state-dependent nonassociated responses. This study …
constitutive models to capture the state-dependent nonassociated responses. This study …
A Simple Single Bounding Surface Model of Undrained Saturated Clays
X Cheng, D Lu, P Wang - Dynamic Analysis of Offshore Wind Turbine …, 2024 - Springer
A simple single bounding surface constitutive model is developed to predict the undrained
behaviors of saturated clays under cyclic loads. The new model does not involve complex …
behaviors of saturated clays under cyclic loads. The new model does not involve complex …
A non-orthogonal fractional plastic damage constitutive model for porous rock-like materials considering porosity evolution
This paper focuses on the evaluation of the macroscopic elastoplastic mechanical behavior
of porous rock-like geomaterials. It is assumed that the porous matrix of the material contains …
of porous rock-like geomaterials. It is assumed that the porous matrix of the material contains …
A three-dimensional elastoplastic constitutive model incorporating Lode angle dependence
J Liu, X Li, C Wang, Y Xu, K Xia - Geomechanics for Energy and the …, 2024 - Elsevier
A comprehensive three-dimensional elastoplastic constitutive model is presented to
characterize the stress-strain behavior of cement stone under the true triaxial stress state …
characterize the stress-strain behavior of cement stone under the true triaxial stress state …
Evaluation of Three Weight Functions for Nonlocal Regularization of Sand Models
X Li, Z Gao - International Journal of Geomechanics, 2024 - ascelibrary.org
Nonlocal regularization is frequently used to resolve the mesh dependency issue that is
caused by strain softening in finite-element (FE) simulations. Some or all variables that affect …
caused by strain softening in finite-element (FE) simulations. Some or all variables that affect …
[PDF][PDF] Finite Element Simulations on Failure Behaviors of Granular Materials with Microstructures Using a Micromechanics-Based Cosserat Elastoplastic Model.
C Xiu, X Chu - CMES-Computer Modeling in Engineering & …, 2024 - cdn.techscience.cn
This paper presents a micromechanics-based Cosserat continuum model for
microstructured granular materials. By utilizing this model, the macroscopic constitutive …
microstructured granular materials. By utilizing this model, the macroscopic constitutive …