Results 91 to 100 of about 13,773,158 (351)

Corrosion effect of hydrochloric acid on the granite: Insights from electrical conductivity, mineral composition, and tensile behavior

Deep Underground Science and Engineering, EarlyView.
The evolution of electrical conductivity, mineral composition, and tensile behavior such as peak strength, average stiffness, and the energy evolution of the granite specimen under different HCl conditions are studied, analyzed as well as quantified, and investigated, respectively.
Yanan Gao, Yikang Cheng, Guanglei Cai, Yuan Gao, Jianwei Tian, Mingzhong Gao   +5 more
wiley   +1 more source

Effect of intermediate principal stress and minimum principal stress unloading stress path and rate on energy evolution of sandstone under true triaxial compression

Meitan xuebao
In the process of deep coal mining, the unloading stress path and unloading rate of deep rock are complicated and changeable due to the influence of excavation and unloading.
Zhixi LIU, Guangming ZHAO, Xiangrui MENG, Zhihong QIN   +3 more
doaj   +1 more source

Morphologies of three-dimensional shear bands in granular media

, 2007
We present numerical results on spontaneous symmetry breaking strain localization in axisymmetric triaxial shear tests of granular materials. We simulated shear band formation using three-dimensional Distinct Element Method with spherical particles.
C. Lee, D. Daudon, D. E. Wolf, H. Sakaguchi, H. Tsunekawa, J. Desrues, J. Desrues, J. Kertész, J. Török, K. A. Alshibli, L. D. Landau, M. Oda, S. Fazekas, S. Fazekas, S. Luding, S. N. Batiste, T. Pöschel   +16 more
core   +1 more source

Experimental study on dynamic behavior analysis of coal and its acoustic emission response characteristics under impact failure

Deep Underground Science and Engineering, EarlyView.
Based on acoustic emission response characteristics, it can be more accurate to identify the damage evolution process of coal under the combined dynamic and static loads, reveal the moment corresponding to coal damage, and identify the characteristics of coal failure. The research results are conducive to the further use of acoustic emission monitoring
Wei Zhang, Huijian Fu, Yingke Liu, Zhaoxi Long, Yang Liu, Tengrui Yang, Yanbo Sun, Mingjun Jiang, Xiaojiang Wen, Yue Niu, Ruixi Cheng   +10 more
wiley   +1 more source

Creep Characteristics of Reconstituted Silty Clay under Different Pre-Loading Path Histories

Buildings
Due to the long-term deformation settlement of foundations, issues such as damage and functional failure of buildings and structures have long been a concern in the engineering field.
Bin Xiao, Peijiao Zhou, Shuchong Wu
doaj   +1 more source

Conventional triaxial loading and unloading test and PFC numerical simulation of rock with single fracture [PDF]

Archives of Civil Engineering
Take the metamorphic sandstone as the reference object, by making rock like samples with fractures, the conventional triaxial loading and unloading test and PFC numerical simulation of rock like sample with single fracture were conducted, and the effects
Yin Tang, Haijun Chen, Liangxiao Xiong, Zhongyuan Xu   +3 more
doaj   +1 more source

A finite-strain hyperviscoplastic model and undrained triaxial tests of peat

, 2017
This paper presents a finite-strain hyperviscoplastic constitutive model within a thermodynamically consistent framework for peat which was categorised as a material with both rate-dependent and thermodynamic equilibrium hysteresis based on the data ...
Nagel, T., O'Kelly, B. C., Zhang, L.
core  

Microscopic time‐dependent mechanical behavior of shale derived from nanoindentation

Deep Underground Science and Engineering, EarlyView.
This study conducted grid nanoindentation creep tests to systematically analyze the microscopic creep behaviors of shale. Based on the analysis of creep strain rate sensitivity, the primary mechanism of microscopic creep in shale was found to be the extension and closure of microcracks.
Cunbao Li, Shilei Zhong, Heping Xie, Changtai Zhou, Jianjun Hu   +4 more
wiley   +1 more source

Stress analysis of crack characteristic of anthracite under dynamic loading

Deep Underground Science and Engineering, EarlyView.
In this article, the dynamic compression test of anthracite under five strain rates is carried out, the evolution law of three kinds of crack characteristic stress is analyzed, and a prediction model of the crack characteristic stress threshold considering the strain rate effect is established. Then, the rationality of crack characteristic stress under
Yun Bai, Feng Gao, Ning Luo, Zhizhen Zhang, Yue Niu, Shanjie Su   +5 more
wiley   +1 more source

A Comparative Study of UCS Results Obtained from Triaxial Tests Under Multiple Failure State Conditions (Test Type II)

Applied Sciences
In any rock engineering project, the uniaxial compressive strength (UCS) is one of the most relevant parameters to be determined as it is used for a variety of purposes.
Nghia Quoc Trinh, Eivind Grøv, Gunnar Vistnes   +2 more
doaj   +1 more source