J
Jian Zhao
Researcher at Monash University, Clayton campus
Publications - 328
Citations - 15640
Jian Zhao is an academic researcher from Monash University, Clayton campus. The author has contributed to research in topics: Rock mass classification & Wave propagation. The author has an hindex of 60, co-authored 316 publications receiving 11636 citations. Previous affiliations of Jian Zhao include École Polytechnique Fédérale de Lausanne & Indian Institute of Technology Delhi.
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Grain-Based Discrete Element Method (GB-DEM) Modelling of Multi-scale Fracturing in Rocks Under Dynamic Loading
TL;DR: In this paper, a grain-based discrete element method (GB-DEM) is proposed to reveal microscale characterisation and mineral grain compositions of rock materials realistically, and the rate dependency of crack initiation stress threshold and crack damage stress threshold is investigated.
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Triaxial compression tests on a granite at different strain rates and confining pressures
Haoliang Li,Jian Zhao,T.J. Li +2 more
TL;DR: In this paper, a series of dynamic triaxial compression tests on the Bukit Timah granite of Singapore were conducted and a total of 69 samples were tested at four strain rates (10 -4, 10 -3, 10 -1 and 10 0 s -1 ) and six confining pressures (20, 50, 80, 110, 140 and 170 MPa).
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Full-field measurement and fracture characterisations of rocks under dynamic loads using high-speed three-dimensional digital image correlation
TL;DR: In this article, a series of dynamic tests was conducted on Hawkesbury sandstones using a split Hopkinson pressure bar (SHPB) at three different strain rates, and real-time images of the loaded specimen were captured by two high-speed cameras at a frame rate of 200,000 frames per second (fps) with a resolution of 256,×256 pixels.
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An equivalent viscoelastic model for rock mass with parallel joints
Jianchun Li,Guowei Ma,Jian Zhao +2 more
TL;DR: In this paper, a virtual wave source (VWS) is proposed to take into account the wave reflections between the joints, which can be effectively applied to analyze longitudinal wave propagation through discontinuous media with parallel joints.
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Use of indentation tests to study the influence of confining stress on rock fragmentation by a TBM cutter
TL;DR: In this article, the authors explored the influence of the confining stress on rock fragmentation under the cutter of tunnel boring machine (TBM) by indentation test, and found that the force for crack initiation and crushed zone size increased with increasing caustic stress.