Exploration of continuous rheological model for rock under uniaxial compression based on phenomenological damage theory

Tianbai Zhou; Yueping Qin; Qiufeng Ma

doi:10.1063/5.0026650

Exploration of continuous rheological model for rock under uniaxial compression based on phenomenological damage theory

AIP Advances ◽

10.1063/5.0026650 ◽

2020 ◽

Vol 10 (10) ◽

pp. 105218

Author(s):

Tianbai Zhou ◽

Yueping Qin ◽

Qiufeng Ma

Keyword(s):

Uniaxial Compression ◽

Rheological Model ◽

Damage Theory

Download Full-text

Predicting the Mechanical Properties of Bimrocks with High Rock Block Proportions Based on Resonance Testing Technology and Damage Theory

Applied Sciences ◽

10.3390/app9173537 ◽

2019 ◽

Vol 9 (17) ◽

pp. 3537

Author(s):

Yuexiang Lin ◽

Limin Peng ◽

Mingfeng Lei ◽

Xiang Wang ◽

Chengyong Cao

Keyword(s):

Mechanical Properties ◽

Elastic Modulus ◽

Constitutive Model ◽

Uniaxial Compression ◽

Rock Block ◽

Dynamic Elastic Modulus ◽

Parameter Determination ◽

Design Parameters ◽

Damage Theory ◽

Design And Construction

Block-in-matrix-rocks (bimrocks) are very complicated geological masses that cause many challenging problems during the design and construction of engineering projects, such as parameter determination and landsliding. Successful engineering design and construction depends on a suitable constitutive model and reliable design parameters for geological masses. In this paper, the vibration attenuation signal of welded bimrocks was obtained and studied using resonance test technology. Combined with a uniaxial compression test, a constitutive model was proposed to describe the mechanical behavior of welded bimrocks. On this basis, the relations between the dynamic elastic modulus and the physical parameters of bimrocks were established, which included macroscopic mechanical parameters and damage constitutive parameters. Consequently, a new technological process was proposed to provide quick identification of the mechanical properties of welded bimrocks. The results indicate that the dynamic elastic modulus is highly correlated with the rock block proportion (RBP) and uniaxial compression strength (UCS). It is an effective parameter to predict the strength of the bimrocks with high RBPs. Additionally, the proposed constitutive model, which is based on damage theory, can accurately simulate the strain softening behavior of the bimrocks. Combining the resonant frequency technology and the proposed constitutive model, the complete stress strain curve can be obtained in a rapid and accurate manner, which provides a further guarantee of the stability and safety of underground engineering.

Download Full-text

The Continuous Damage Theory of Brittle Materials, Part 2: Uniaxial and Plane Response Modes

Journal of Applied Mechanics ◽

10.1115/1.3157740 ◽

1981 ◽

Vol 48 (4) ◽

pp. 816-824 ◽

Cited By ~ 44

Author(s):

G. U. Fonseka ◽

D. Krajcinovic

Keyword(s):

Uniaxial Tension ◽

Uniaxial Compression ◽

Analytical Model ◽

Brittle Materials ◽

Strain Fields ◽

Material Parameters ◽

Damage Theory ◽

Response Modes

This part of the paper focuses on the application of the analytical model developed in Part 1 on the uniaxial tension, uniaxial compression, and plane problems (including rotating strain fields and unproportional loading). Identification of the material parameters is discussed in view of the derived results.

Download Full-text

Large Lateral Deformation Characteristics of Simulated Columnar Jointed Rock Mass under Uniaxial Compression Tests

International journal of geohazards and environment ◽

10.15273/ijge.2015.03.015 ◽

2015 ◽

Vol 1 (3) ◽

pp. 122-127

Author(s):

Zhi Song ◽

Weimin Xiao ◽

Huayong Ni ◽

Gang Fan

Keyword(s):

Rock Mass ◽

Uniaxial Compression ◽

Jointed Rock ◽

Jointed Rock Mass ◽

Deformation Characteristics ◽

Lateral Deformation ◽

Compression Tests ◽

Columnar Jointed Rock Mass

Download Full-text

Atomistic simulation of the uniaxial compression of black phosphorene nanotubes

Vietnam Journal of Mechanics ◽

10.15625/0866-7136/10982 ◽

2018 ◽

Cited By ~ 1

Author(s):

Van-Trang Nguyen ◽

Minh-Quy Le

Keyword(s):

Finite Element Method ◽

Molecular Dynamics ◽

Finite Element ◽

Uniaxial Compression ◽

Critical Stress ◽

Atomistic Simulation ◽

Critical Strain ◽

Bond Breaking ◽

Black Phosphorene ◽

Weber Potential

We study through molecular dynamics finite element method with Stillinger-Weber potential the uniaxial compression of (0, 24) armchair and (31, 0) zigzag black phosphorene nanotubes with approximately equal diameters. Young's modulus, critical stress and critical strain are estimated with various tube lengths. It is found that under uniaxial compression the (0, 24) armchair black phosphorene nanotube buckles, whereas the failure of the (31, 0) zigzag one is caused by local bond breaking near the boundary.

Download Full-text