In this paper, a peridynamic-enhanced finite element formulation is introduced for the numerical simulation of thermo–hydro–mechanical coupled problems in saturated porous media with cracks. The proposed approach combines Finite Element (FE) method governing heat conduction–advection and fluid flow fractured domain, Peridynamic (PD) describing solid phase deformation capturing crack propagation. Firstly, consolidation problem column simulated by using approach. m- δ-convergence studies are...

This paper presents a method to couple FEM meshes with ordinary state-based peridynamic grids. It generates computational tool that is as efficient computer methods based on classical continuum mechanics and flexible peridynamics in dealing crack propagation. Moreover, it removes most of the problems due surface effects typical nonlocal such OSB-PD. The adaptive dynamic relaxation approach used solve linear elastic propagation problems. successfully applied complex case 3 D able accurately...

We report a facile method to fabricate reduced graphene oxide/polypyrrole hydrogels (rGO/PPy) simply by combining the self-assembly process at room temperature with oxidation polymerization elevated temperature. The as-prepared composite possess cross-linked 3D hierarchical porous structure and show compression-tolerant property high specific capacitance of 473 F g–1 1 A g–1. In particular, 82% value has been maintained after charge–discharge for 5000 cycles, suggesting great potential...

Abstract Rock‐ice avalanches occurring in cold high‐mountain regions often cause catastrophic damages due to their extremely high mobility. Rock and ice have different physical properties, such as particle size, density, friction, etc., leading the segregation of rock mixture impacting its However, how affects mobility rock‐ice is still poorly understood. A series numerical experiments were conducted by using discrete element method quantify effect size ratio content on mixtures. Results...

The complex network of fractures formed by randomly distributed natural in hot-dry rocks (HDRs) complicates the heat transfer regularity injected fluid. On basis fracture network, exploring characteristics fluid flow and as influenced different parameters helps enable efficient resource extraction effectively promotes construction diversified energy utilization structures. Accordingly, accounting for effect thermal shock on evolution permeability rock matrix, a thermo-hydro-mechanical (THM)...

Numerical simulations demonstrate the occurrence of both sub- and supershear ruptures in dry saturated porous media during mode I fracture. Initially, Finite Element Method is applied to investigate a case sub-shear velocity beam on an elastic foundation subjected sinusoidal loading. Subsequently, Extended employed for fluid injection infinite medium plate. The results reveal transition from smooth behavior stepwise pattern eventually forerunning as rate increases. Notably, this progression...

Abstract The hybrid finite element‐peridynamic (FEM‐PD) models have been evidenced for their exceptional ability to address hydro‐mechanical coupled problems involving cracks. Nevertheless, the non‐local characteristics of PD equations and required inversion operations when solving fluid result in prohibitively high computational costs. In this paper, a fast explicit solution scheme FEM‐PD based on matrix operation is introduced, where graphics processing units (GPUs) are used accelerate...

Abstract Rock‐ice avalanches in cold‐high mountainous regions exhibit remarkably high mobility, frequently resulting catastrophic consequences. However, the systematic influence of ice on mobility rock‐ice remains poorly understood. This paper addresses this gap by conducting a comprehensive flume experiment temperature‐controlled room at −10°C, simulating and considering variations particle size ratios contents. Overall segregation patterns are quantified analyzing deposition...

During earthquakes, seismic ruptures propagate (Vr) along faults as mode II-III cracks, approaching the shear wave speed Vs (i.e., sub-Rayleigh or Vr ~ 0.9 Vs), or, in at least 15% cases, faster than supershear √2Vs ) (Bao et al., 2022). Since ground shaking increases with rupture speed, transition from to speeds is critical hazard studies. This may occur (1) directly, due dynamic stress perturbations associated and strength heterogeneities fault, presence of fault step-overs...

Graphene–polypyrrole (GPPy) composites with 3-dimensional macrostructure were prepared by a one-step self-assembly process, in which the continuous oxidation-reduction reaction of pyrrole monomers and graphite oxide existence Cu2+ finally resulted formation macroporous hydrogels. The as-prepared hydrogel exhibited high specific capacitance 498 295 F g−1 respectively at scan rate 5 mV s−1 discharge current density 1 A g−1. Furthermore, 240 could be achieved even if 10 g−1, maintained 80%...