Results 231 to 240 of about 67,671 (301)

Construction Methods of Mesoscopic Models for Concrete and Quantitative Analysis of Mesoscopic Damage. [PDF]

Materials (Basel)
Wang X, Li S, Chen Y, Ma S, Chen J.
europepmc   +1 more source

Failure characteristics and the energy criterion of rock with a through‐going joint under true‐triaxial unloading conditions: Insights from the DEM model

Deep Underground Science and Engineering, EarlyView.
The rock failure mode is significantly influenced by the contributing factors, such as the joint inclination, the initial confining pressure, and the unloading point. We found six typical rock failure modes after a large number of numerical tests. Abstract Excavation unloading damages rock masses, with preferential failure along geological defects in ...
Fei Liu, Changhui Liang, Sijia Liu, Yongjun Zhang, Luo Wang   +4 more
wiley   +1 more source

Biaxially ductile supramolecular polymer networks. [PDF]

Sci Adv
Wu T, Zhou Z, Huang J, Wang Z, Wang D, Wang J, Han Z, Wu B, Wang X, Zeng C, Li H, Xing D, Lin J, Ji S, Jiao Y, Jiang Y, Tan Y, Zhou Y, Shi R, Huang Z.   +19 more
europepmc   +1 more source

Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

Deep Underground Science and Engineering, EarlyView.
The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza, Hendrik Grobler, Moshood Onifade, Manoj Khandelwal   +3 more
wiley   +1 more source

AI-assisted reliability-based design framework for tunnel concrete linings in weak rocks. [PDF]

Sci Rep
Khani J, Nejati HR, Goshtasbi K, Rostamabadi S, Mahmoodzadeh A.   +4 more
europepmc   +1 more source

Study on fracture parameter calibration and failure characteristics of rock with hole and crack

Deep Underground Science and Engineering, EarlyView.
The SIF and plastic zone equations for a single hole and crack have been derived. The model's failure state leads to the identification of four types of cracks. The plastic zone increases with increased brittleness and decreased crack length. Abstract Cracks within the surrounding rock of roadways significantly affect their stability and failure ...
Shaochi Peng, Wensong Wang
wiley   +1 more source

Calibration of the Karagozian & Case model for compression and tensile tests of a 3,4-dinitropyrazole-based melt-cast explosive. [PDF]

Sci Rep
Xu Y, Gao J, Fu P, Liu Z, Zhang X, Zhou L.   +5 more
europepmc   +1 more source

Temperature‐dependent shear behavior and constitutive model of the rock–concrete interface

Deep Underground Science and Engineering, EarlyView.
Shear tests were conducted to investigate the temperature‐dependent shear behavior of the rock–concrete interface, highlighting the interaction between the surrounding rock and the lining during tunnel fires. Under experimental conditions, concrete exhibited greater temperature sensitivity than rock, with the shear fracture surface transitioning from ...
Hongbin Chen, Yujing Jiang, Rui Pan, Bin Wang, Sunhao Zhang, Jinge Zhang, Xianzhuang Ma   +6 more
wiley   +1 more source

Enhanced Rashba Effect and Optical Absorption in 2D Janus XMoYZ₂ (X = S/Se/Te; Y = Si/Ge; Z = N/P): A First-Principles Study. [PDF]

Nanomaterials (Basel)
Liu X, Li M, Shang N, Guo P, Song H, Zhao B, Li L, Wang J.   +7 more
europepmc   +1 more source

Shear behavior of bolt–grout interfaces under constant normal stiffness: Influence of grout strength and thickness

Deep Underground Science and Engineering, EarlyView.
The effects of grout strength and thickness on the shear behavior of bolt–grout interfaces (BGI) under constant normal stiffness conditions are investigated. Shear strength, failure modes, and acoustic emission characteristics are examined. The findings reveal that grout strength exerts a significantly greater influence on BGI shear strength and ...
Sunhao Zhang, Dongqi Shang, Yujing Jiang, Jinge Zhang, Hongbin Chen, Tianqi Jiang   +5 more
wiley   +1 more source