Grain-based discrete element method (GB-DEM) modelling of multi-scale fracturing in rocks under dynamic loading

XF Li, QB Zhang, HB Li, J Zhao - Rock Mechanics and Rock Engineering, 2018 - Springer
This study aims to explore dynamic behaviours of fracturing and damage evolution of rock
materials at the grain scale. A grain-based discrete element method (GB-DEM) is proposed …

Experimental investigation on dynamic strength and energy dissipation characteristics of gas outburst‐prone coal

C Fan, S Li, D Elsworth, J Han… - Energy Science & …, 2020 - Wiley Online Library
We report laboratory experiments to investigate the dynamic failure characteristics of
outburst‐prone coal using a split Hopkinson pressure bar (SHPB). For comparison, two …

Experimental research on the dynamic mechanical properties and damage characteristics of lightweight foamed concrete under impact loading

S Feng, Y Zhou, Y Wang, M Lei - International Journal of Impact …, 2020 - Elsevier
As an energy-saving and environmentally friendly building material, foamed concrete has
been widely applied for construction against impact loading. To investigate the dynamic …

[HTML][HTML] Rate-dependent mechanical behavior of jointed rock with an impersistent joint under different infill conditions

S Kumar, G Tiwari, V Parameswaran, A Das - Journal of Rock Mechanics …, 2022 - Elsevier
Transition in the rate-dependent mechanical response of rock was investigated due to the
presence of impersistent joint with different infill conditions. Four types of samples, ie intact …

Dynamic mechanical property deterioration model of sandstone caused by freeze–thaw weathering

B Ke, K Zhou, C Xu, H Deng, J Li, F Bin - Rock Mechanics and Rock …, 2018 - Springer
In cold climate regions, rock engineering structures are subjected to repeated processes of
freeze–thaw weathering and consequently the integrity of these structures will gradually …

A multifrequency ultrasonic approach to extracting static modulus and damage characteristics of rock

Y Zhang, GF Zhao, X Wei, H Li - … Journal of Rock Mechanics and Mining …, 2021 - Elsevier
Understanding the mechanical behavior of rock is a fundamental requirement for many
geological explorations. Based on the frequency dependence of primary and shear wave …

[HTML][HTML] Experimental research on the dynamic constringent characteristics and fractal properties of sandstone under impact loading

Z Zhao, J Xue, J Jin, L Tan, W Xia, R Cai - Case Studies in Construction …, 2023 - Elsevier
Abstract Using the Split Hopkinson Pressure Bar (SHPB), a sequence of impact loading
experiments were performed on sandstone to examine the dynamic constringent …

Dynamic mechanical behaviour of rock-like materials with a flaw under different orientation and infill conditions

S Kumar, G Tiwari, V Parameswaran, A Das - Bulletin of Engineering …, 2023 - Springer
The effect of flaw inclination angle on the mechanical behaviour of rock-like specimens
containing a pre-existing flaw under different infill conditions is investigated under dynamic …

Effect of loading characteristics and specimen size in split Hopkinson pressure bar test on high-rate behavior of phyllite

S Mishra, A Khetwal, T Chakraborty, D Basu - Archives of Civil and …, 2022 - Springer
Split Hopkinson pressure bar (SHPB) tests are performed on Himalayan phyllite rock with
five different specimen sizes and with different gas gun pressures and striker bar lengths of …

Dynamic behavior of ungrouted and grouted rocks of different morphologies containing a flaw subjected to different thermal treatments

S Kumar, G Tiwari, A Das - Rock Mechanics and Rock Engineering, 2024 - Springer
Rocks containing flaws around rock structures are often subjected to complex temperatures
and geological conditions. This study investigates the mechanical behavior of heat-treated …