Results 1 to 10 of about 103 (87)
Scientific ReportsRock creep is essentially a process of damage accumulation. According to the damage evolution of rock under creep conditions, the TAW2000 triaxial test system is used to carry out triaxial creep test on red layer soft rock taken from Yibo Tunnel in ...
Lei Chen +6 more
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Triaxial creep test and model study of red sandstone based on Weibull distribution
Shuiwen dizhi gongcheng dizhi, 2023 At present, the creep problem of underground engineering surrounding rock still exists, and the creep theory needs to be further enriched. In essence, rock creep is a process of constant accumulation of damage.
Weize ZHANG +3 more
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A nonlinear creep model for surrounding rocks of tunnels based on kinetic energy theorem
Journal of Rock Mechanics and Geotechnical Engineering, 2023 The initiating condition for the accelerated creep of rocks has caused difficulty in analyzing the whole creep process. Moreover, the existing Nishihara model has evident shortcomings in describing the accelerated creep characteristics of the ...
Wenbo Liu +4 more
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Accelerated creep model for rock based on statistical damage principle
Yantu gongcheng xuebao, 2020 Aiming at the problems that the existing creep theoretical models cannot describe the accelerated creep characteristics of the viscoplastic phase of rock and how to determine the start conditions of its accelerated creep phase, the triaxial creep tests ...
LIU Wen-bo 1, 3, ZHANG Shu-guang 1, 2, CHEN Lei 3, SUN Bo-yi 3, LU Ping-ping 3
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Fatigue &Fracture of Engineering Materials &Structures, Volume 46, Issue 10, Page 3872-3891, October 2023., 2023 Abstract In this study, the fatigue crack growth rate in four different tool steel microstructures (hot rolled, powdermetallurgically processed, as‐cast, and carbide‐free) is experimentally measured and correlated with hard phase size and spacing, as well as with the roughness of the fracture surface that is created by crack kinking.
Lukas Brackmann +4 more
wiley +1 more source
Material Testing 2.0: A brief review
Strain, Volume 59, Issue 3, June 2023., 2023 Abstract With the advent of camera‐based full‐field measurement techniques such as digital image correlation (DIC), researchers have been trying to exploit such rich data sets through the use of more complex test configurations than the standard ones (uniaxial tension/compression, bending etc.).
Fabrice Pierron
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Decompression and Fracturing Caused by Magmatically Induced Thermal Stresses
Journal of Geophysical Research: Solid Earth, Volume 128, Issue 3, March 2023., 2023 Abstract Studies of host rock deformation around magmatic intrusions usually focus on the development of stresses directly related to the intrusion process. This is done either by considering an inflating region that represents the intruding body, or by considering multiphase deformation.
D. Kiss +3 more
wiley +1 more source
Piotr Perzyna – Scientific Conductor within Theory of Thermo-Viscoplasticity
Engineering Transactions, 2014 In this paper, authors reminisce on years of scientific cooperation and achievements on the personality of Piotr Perzyna and his Theory of Thermo-Viscoplasticity, which are displayed from remembrance. All the essence of latin words Master, Doctor, Docent, Professor are in some kind the reflection of the scientific history that has happened during the ...
Adam GLEMA +2 more
openaire +2 more sources
An EVP Double‐Yield Nonstationary Flow Surface Model for Soft Clay
Advances in Civil Engineering, Volume 2022, Issue 1, 2022., 2022 According to experimental findings, soft clay has compression and shear creep. The goal of the study is to develop an elastic‐viscoplastic (EVP) model for the viscous behavior of soft clay. The new EVP model is deduced from the associated flow rule, Yin’s double‐yield surface theory, and the critical state soil mechanics. The nonstationary flow surface
Liucheng Chang +3 more
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Analysis of Damage Constitutive Model for Frozen Red Clay under Uniaxial Compression
Advances in Materials Science and Engineering, Volume 2022, Issue 1, 2022., 2022 At present, it is in the peak period of infrastructure construction in western China, and due to the natural climate, the soil has been frozen for a long time, but there is little research on frozen red clay at present. Therefore, it is necessary to further study the mechanical properties of frozen red clay.
Bin Lin +3 more
wiley +1 more source