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Numerical analysis on mixed lubrication performance of journal-thrust coupled microgroove bearings with different bottom shapes
The purpose of the present study is to establish a mixed lubrication model for the journal-thrust coupled microgroove bearings (also referred as...
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Mechanical properties of deep sandstones under loading rate effect
The advance speed of the working face in coal mines can significantly affect the fluctuation frequency of abutment pressure in front of the coal...
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Formation mechanism of core discing during drilling under deep in-situ stress environment: Numerical simulation and laboratory testing
Core discing often occurs during drilling under deep in-situ stress environment. To determine its formation mechanism in sandstone under deep in-situ...
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Mechanical and energy dissipation characteristics of granite under cyclic impact loading
This study investigated the effect of repeated blasting on the stability of surrounding rock during the construction of a tunnel or city underground...
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Numerical simulation on mechanisms of dense drilling for weakening roofs and its application in roof control
This study proposed a method of dense drilling that could induce the formation of a discontinuous surface to weaken the roof. According to the...
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Experimental studies on mechanical properties and brittleness of granite treated with different microwave heating times
Microwave-induced strength weakening and brittle reduction of rock are significant for improving hard rock breaking efficiency. Uniaxial compression...
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Analysis of axial force of double circular arc helical gear hydraulic pump and design of its balancing device
In view of the axial force produced in the working process of double arc helical gear hydraulic pump, the theory of differential equation of curve...
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The effect of residual stresses on the relation between pulse wave velocity and blood pressure in arteries
Real-time monitoring of human blood pressure by pulse wave velocity is an advanced noninvasive measurement technology. The previous theory of the...
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Excess energy characteristics of true triaxial multi-faceted rapid unloading rockburst
Delayed rockburst experiments with different numbers of unloading surfaces (DNUS) were performed using an independently developed true triaxial...
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Analytical model of shear mechanical behaviour of bolted rock joints considering influence of normal stress on bolt guide rail effect
Rock bolts have been widely used in slopes as a reinforcement measure. Modelling the shear mechanical behaviours of bolted rock joints is very...
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An experimental investigation of failure mechanical behavior in cylindrical granite specimens containing two non-coplanar open fissures under different confining pressures
Fissures play a significant role in predicting the unstable failure of rock mass engineering. For deep rock underground engineering, rock mass...
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Dynamic tensile behavior of soda-lime silicate glass: the effects of loading rate, specimen size and stress waves
Using flattened Brazilian disk (FBD) tests, the effects of loading rate, specimen size and stress waves on the tensile behavior of soda-lime silicate...
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Grain size effect on plastic microformation behavior for Inconel 718 foils: Experiment and modeling
With the rapid development of the aerospace industry, there is an increasing demand for miniaturized parts made of Inconel 718 foils. However, the...
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A new plastic flow theoretical model and verification for non-dense metals
The mechanical behavior and constitutive equations of isotropic non-dense metals, such as metal foams, porous metals, and lattice metals, have been...
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Design of compliant mechanisms for origami metamaterials
As an art of paper folding, origami has been widely explored by artists for centuries. Only in recent decades has it gained attention from...
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Mechanosensation of osteocyte with collagen hillocks and primary cilia under pressure and electric field stimulation
Mechanosensors are the most important organelles for osteocytes to perceive the changes of surrounding mechanical environment. To evaluate the...
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Effects of osteocyte orientation on loading-induced interstitial fluid flow and nutrient transport in bone
Changes in osteocyte spatial arrangement and orientation that are associated with aging and certain bone diseases have attracted much attention. The...
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Plastic deformation of magnesium single crystal: a crystal plasticity coupled twinning phase field simulation
A crystal plasticity coupled twinning phase field (CP-TPF) model was developed to investigate the plastic deformation of magnesium (Mg) single...
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An approach to calculate surface effects of polyhedron nanocrystals and its application in silicon nanowires
A stretch-release strategy is proposed to analyze the problem of surface energy-induced stress fields in nanocrystals, which is resolved into a...
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Influence of infilling stiffness on mechanical and fracturing responses of hollow cylindrical sandstone under uniaxial compression tests
Hollow cylindrical sandstone specimens filled with Al, Pb and polymethyl methacrylate (PMMA), as well as hollow and solid specimens were tested under...