Results 31 to 40 of about 142,974 (226)
Shock and Vibration, 2022 The use of polyenergy water pressure controlled blasting technology in tunnel construction is gradually being promoted, and the technology is often used in hard rock, and the mechanism of rock breaking in fractured sandstone strata is still lacking ...
Qingbiao Wang +9 more
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, 2018 The hypothesis of critical failure relates the presence of an ultimate stability point in the structural constitutive equation of materials to a divergence of characteristic scales in the microscopic dynamics responsible for deformation. Avalanche models
Baró, Jordi, Davidsen, Jörn
core +1 more source
Shiyou jixie, 2021 The research on rock breaking mechanism of special-shaped non-planar PDC cutter is relatively scarce, and the research on domestic prismatic PDC cutter is even scarcer.
Wei Xiuyan +5 more
doaj
Numerical Simulations and Experiments on Single-Tooth Rock-Breaking
Machines, 2022 The rock-breaking efficiency of a drilling tool directly affects the production costs and progress of foundation construction. It is essential to understand the mechanism of mechanical rock-breaking to improve rock-breaking efficiency.
Heyuqiu Li +5 more
doaj +1 more source
Rock Breaking Mechanism and Drilling Performance of Harmonic Vibro-Impact Drilling
IOP Conference Series: Earth and Environmental Science, 2020 Abstract An improved model of displacement response of rock considering damping is proposed and the energy response model is further presented. Then, the rock breaking mechanism under harmonic vibro-impact is investigated based on the displacement response and energy response.
Siqi Li +5 more
openaire +1 more source
Substantial bulk photovoltaic effect enhancement via nanolayering. [PDF]
, 2016 Spontaneous polarization and inversion symmetry breaking in ferroelectric materials lead to their use as photovoltaic devices. However, further advancement of their applications are hindered by the paucity of ways of reducing bandgaps and enhancing ...
Grinberg, Ilya +4 more
core +1 more source
Numerical Simulation of Rotary Impact Rock-Breaking Process of a Full-Size Drill Bit
Shiyou jixie, 2023 As the key fundamental aspect of rotary impact drilling technology, the mechanism of rock breaking has not been well demonstrated, which limits the application of this technology.To illustrate the rotary impact rock-breaking process, the numerical ...
Yan Yan +5 more
doaj
Applied Sciences, 2023 Button cutters are commonly used in hard rock drilling because the inserted carbide buttons provide exceptional wear resistance, impact resistance, and high strength in challenging geological formations.
Yanan Ma +4 more
doaj +1 more source
Computer simulation of fatigue under diametrical compression [PDF]
, 2007 We study the fatigue fracture of disordered materials by means of computer simulations of a discrete element model. We extend a two-dimensional fracture model to capture the microscopic mechanisms relevant for fatigue, and we simulate the diametric ...
Andrade Jr., J. S. +3 more
core +2 more sources
Tetragonal CuO: A new end member of the 3d transition metal monoxides [PDF]
, 2008 Monoclinic CuO is anomalous both structurally as well as electronically in the 3$d$ transition metal oxide series. All the others have the cubic rock salt structure.
Beasley, Malcolm R. +6 more
core +12 more sources