Principal stress
View article: Strength Characteristics of Unsaturated Compacted Loess Under Complex Stress Paths
Strength Characteristics of Unsaturated Compacted Loess Under Complex Stress Paths Open
A series of (45 sets) true triaxial shear tests with controlled suction and under conditions of equal-b and equal-p are performed on unsaturated compacted loess. By incorporating the effects of matric suction in unsaturated loess and the i…
View article: Recalibrated Relationship of P-Wave Velocity in a Coal Seam with Depth in the South-Western Upper Silesian Coal Basin
Recalibrated Relationship of P-Wave Velocity in a Coal Seam with Depth in the South-Western Upper Silesian Coal Basin Open
P-wave velocity in coal seams increases with depth and reflects the in situ stress state in the rock mass. Anomalous velocity can indicate changes in the stress state resulting from various mining and geological disturbances. This informat…
View article: Water-induced damage mechanism and dual-radius grouting control of weakly cemented argillaceous roadways in Western China
Water-induced damage mechanism and dual-radius grouting control of weakly cemented argillaceous roadways in Western China Open
The weakly cemented argillaceous surrounding rock (WSR) presents significant challenges in underground roadways in Western China, characterized by water-induced softening, large deformations, and difficult stability control. This study sys…
View article: The Mechanical Behaviors of Sandstones in Response to True Triaxial Graded Perturbations of the Intermediate Principal Stress
The Mechanical Behaviors of Sandstones in Response to True Triaxial Graded Perturbations of the Intermediate Principal Stress Open
In this study, true triaxial graded cyclic loading and unloading intermediate principal stress tests were performed on sandstones. The effects of graded cyclic increments (GCI) (1, 3, and 5 MPa) and minimum principal stresses (4, 5, 6, and…
View article: In-Situ Stress Inversion and Support Performance of Unbonded Prestressed Through-Anchor Cables in a Pumped-Storage Underground Powerhouse
In-Situ Stress Inversion and Support Performance of Unbonded Prestressed Through-Anchor Cables in a Pumped-Storage Underground Powerhouse Open
The initial in-situ stress and rock masses mechanical properties are key determinants of surrounding rock stability and engineering design for underground powerhouses of pumped-storage power stations. Based on in-situ stress measurements a…
View article: Study on the Evolution Law of Four-Dimensional In Situ Stress During Hydraulic Fracturing of Deep Shale Gas Reservoir
Study on the Evolution Law of Four-Dimensional In Situ Stress During Hydraulic Fracturing of Deep Shale Gas Reservoir Open
The increasing burial depth of deep shale formations in the southern Sichuan leads to more complex in situ stresses and geological structures, which in turn raises the challenges of hydraulic fracturing. Although enlarging the treatment sc…
View article: Numerical analysis of stress concentration and crack initiation in a bolted joint under combined fretting loads
Numerical analysis of stress concentration and crack initiation in a bolted joint under combined fretting loads Open
This study aims to predict the mechanical response of a bolted assembly composed of two aluminum alloy plates with localized damage in the contact region, under combined normal and tangential loading. A finite element model was developed u…
View article: Experimental Study on the True Triaxial Unloading Mechanical Properties of Cement Tailings Backfill Under Different Intermediate Principal Stresses
Experimental Study on the True Triaxial Unloading Mechanical Properties of Cement Tailings Backfill Under Different Intermediate Principal Stresses Open
Engineering unloading activities during deep mineral resource extraction subject the backfill materials to complex true triaxial stress conditions, where their mechanical behavior and damage mechanisms are critical to stope stability. In t…
View article: Numerical Simulation of Fracture Propagation and Damage Evolution in Coal Seam Under Controlled High-Energy Shock Wave Fracturing
Numerical Simulation of Fracture Propagation and Damage Evolution in Coal Seam Under Controlled High-Energy Shock Wave Fracturing Open
Reservoir stimulation is a critical technique for the efficient development of coalbed methane (CBM), playing a significant role in improving permeability. Controlled shock wave fracturing, as an emerging stimulation method, offers advanta…
View article: Evidence of shear stress component in Lüders front based on an in-situ synchrotron high-energy X-ray diffraction experiment
Evidence of shear stress component in Lüders front based on an in-situ synchrotron high-energy X-ray diffraction experiment Open
The formation and propagation of Lüders bands are important phenomena in the plastic deformation of some critical structural materials. The propagating Lüders front, which is structurally unstable, plays a key role in this process. Yet, th…
View article: Research on the Evolution Law of the Plastic Zone and Control Technologies for Surrounding Rock in Floor Roadway Influenced by Mining Activities
Research on the Evolution Law of the Plastic Zone and Control Technologies for Surrounding Rock in Floor Roadway Influenced by Mining Activities Open
This study addresses the challenges of deformation failure and the difficulty in controlling the surrounding rock in the 2453 floor roadway of a coal mine in Hunan Province, influenced by mining activities. Conducting an in‐depth investiga…
View article: A Three-Factor Experimental Study on the Effect of Specimen Size on the Shear Strength of Rock Joints
A Three-Factor Experimental Study on the Effect of Specimen Size on the Shear Strength of Rock Joints Open
Shearing of rock joints is a critical failure mode in rock masses. The shear strength of rock joints must, therefore, be considered in the design of structures in rock masses. Several criteria for prediction of shear strength have been pro…
View article: Fracture characterization of low-permeability oil reservoirs under hydrofracturing and fracturing-flooding processes under varying in-situ stress conditions
Fracture characterization of low-permeability oil reservoirs under hydrofracturing and fracturing-flooding processes under varying in-situ stress conditions Open
Enhancing the efficient development of these low-permeability and ultra-low-permeability sandstone oil reservoirs is an important support for maintaining and increasing production in Xinjiang Oilfield. To explored the morphological charact…
View article: Multiaxial Simulation data
Multiaxial Simulation data Open
Alloy 709 Multiaxial Creep Simulation Dataset This dataset contains multiaxial creep simulation results for Alloy 709 generated with a crystal-plasticity finite-element (CPFE) framework. The raw data comprise time-series outputs (out.csv) …
View article: A Finite Element Study of Bimodulus Materials with 2D Constitutive Relations in Non-Principal Stress Directions
A Finite Element Study of Bimodulus Materials with 2D Constitutive Relations in Non-Principal Stress Directions Open
This paper extends the application of bimodulus elasticity theory by formulating a constitutive relation applicable to non-principal stress directions, building upon the established framework based on principal stresses. The paper develops…
View article: Multiaxial Simulation data
Multiaxial Simulation data Open
Alloy 709 Multiaxial Creep Simulation Dataset This dataset contains multiaxial creep simulation results for Alloy 709 generated with a crystal-plasticity finite-element (CPFE) framework. The raw data comprise time-series outputs (out.csv) …
View article: Mechanisms and Mitigation of Injection-Induced Microseismicity: The Critical Role of Fracture Orientation in Shear Reactivation
Mechanisms and Mitigation of Injection-Induced Microseismicity: The Critical Role of Fracture Orientation in Shear Reactivation Open
Hot dry rock (HDR) is a promising renewable energy resource whose vast reserves and wide distribution have attracted extensive attention in recent years. However, exploiting HDR resources requires hydraulic stimulation, which is typically …
View article: Maximum principal stretch field at a stretched unfilled natural rubber crack tip (30 April 2021)
Maximum principal stretch field at a stretched unfilled natural rubber crack tip (30 April 2021) Open
This movie shows the maximum principal stretch field at the stretched crack tip of an unfilled natural rubber. It corresponds to Figure 7 in our paper published in Polymer and entitled "Thermomechanical and calorimetric characterization of…
View article: Maximum principal stretch field at a stretched unfilled natural rubber crack tip (30 April 2021)
Maximum principal stretch field at a stretched unfilled natural rubber crack tip (30 April 2021) Open
This movie shows the maximum principal stretch field at the stretched crack tip of an unfilled natural rubber. It corresponds to Figure 7 in our paper published in Polymer and entitled "Thermomechanical and calorimetric characterization of…
View article: Alignment and anisotropy of stresses in disordered granular media
Alignment and anisotropy of stresses in disordered granular media Open
Characterizing the degeneracy of local stress states is a central challenge in obtaining the complete statistical mechanics of disordered media. Here, we introduce a minimal force-balance model for isolated granular clusters to probe the s…
View article: Non-Proportional Fatigue Stress Criteria in Welded Joints: A Design Code Perspective
Non-Proportional Fatigue Stress Criteria in Welded Joints: A Design Code Perspective Open
Welded joints often exhibit a significant reduction in fatigue life when subjected to non-proportional (NP) multiaxial loading conditions. Therefore, it is essential to evaluate how current design codes account for NP fatigue and whether t…
View article: Non-limit state seismic earth pressure solution for finite soil mass considering intermediate principal stress
Non-limit state seismic earth pressure solution for finite soil mass considering intermediate principal stress Open
View article: Reinforcement Paths on a Torus Under Internal Pressure: Toroidal Helix, Principal Stress Trajectory, and Geodesic Line
Reinforcement Paths on a Torus Under Internal Pressure: Toroidal Helix, Principal Stress Trajectory, and Geodesic Line Open
This contribution investigates and compares different fiber reinforcement paths on a torus subjected to internal pressure. In particular, the following three characteristic trajectories are considered: the toroidal helix, the path of the r…
View article: Studies of the Strain Distribution in Wide Plates During Brittle Fracture Propagation
Studies of the Strain Distribution in Wide Plates During Brittle Fracture Propagation Open
This report summarizes the results of a series of tests made as a part
\nof the study of the propagation of brittle fractures in six-ft wide steel plates.
\nAll plates were tested under similar conditions of stress, temperature, and
\nimpa…
View article: Characteristics and modelling of coral sand particle breakage under principal stress axis rotation
Characteristics and modelling of coral sand particle breakage under principal stress axis rotation Open
View article: A hypoplastic model simulating the cyclic clay behaviors under principal stress rotation
A hypoplastic model simulating the cyclic clay behaviors under principal stress rotation Open
View article: Stress and Temperature Dependence of Screw Dislocation Motion in Refractory Multi-Principal Element Alloys
Stress and Temperature Dependence of Screw Dislocation Motion in Refractory Multi-Principal Element Alloys Open
The motion of dislocations controls the strength of alloys with a body-centered cubic structure. Recently, new alloys with body-centered cubic structure, called refractory multi-principal element alloys, have demonstrated outstanding high-…
View article: Principal stress rotation effect and multi-factor coupling support optimization in roadways of inclined coal seams
Principal stress rotation effect and multi-factor coupling support optimization in roadways of inclined coal seams Open
Aiming at the effect of principal stress rotation (PSR) in gently inclined coal seam roadways, this study has established a strength criterion that comprehensively considers the coupling effects of multiple factors. Through integrated theo…
View article: A new modified maximum principal stress criterion for predicting rock fracture toughness under mixed-mode I/III loading
A new modified maximum principal stress criterion for predicting rock fracture toughness under mixed-mode I/III loading Open
View article: Predicting horizontal principal stress through borehole deformation
Predicting horizontal principal stress through borehole deformation Open
In this paper, the geometry of borehole forced by two-dimensional stress was studied based on classical rock mechanics. The relation between horizontal principal stress and geometrical parameters of deformed circular borehole was establish…