نتایج جستجو برای: horizontal discontinuity

تعداد نتایج: 71092  

Journal: :journal of mining and environment 0
s. e. mirsalari department of mining and metallurgical engineering, yazd university, yazd, iran m. fatehi marji department of mining and metallurgical engineering, yazd university, yazd, iran j. gholamnejad department of mining and metallurgical engineering, yazd university, yazd, iran m. najafi department of mining and metallurgical engineering, yazd university, yazd, iran

analysis of the stresses, displacements, and horizontal strains of the ground subsidence due to underground excavation in rocks can be accomplished by means of a hybridized higher order indirect boundary element/finite difference (be/fd) formulation. a semi-infinite displacement discontinuity field is discretized (numerically) using the cubic displacement discontinuity elements (i.e. each highe...

Analysis of the stresses, displacements, and horizontal strains of the ground subsidence due to underground excavation in rocks can be accomplished by means of a hybridized higher order indirect boundary element/finite difference (BE/FD) formulation. A semi-infinite displacement discontinuity field is discretized (numerically) using the cubic displacement discontinuity elements (i.e. each highe...

2016
Márcio C. F. Macedo Antônio L. Apolinário

For convenience, let us rewrite v(x,y) as a function of three parameters v(dc,don, p): the compressed discontinuity dc, the oriented normalized discontinuity don, and the relative coordinates of the screen-space pixel in the projected light space p. For the parameters dc and p, the description given in the Section 3.1 of the paper is sufficient for this supplementary document. However, we need ...

    The combination of horizontal drilling along with hydraulic fracturing has significantly improved the production of hydrocarbon reservoirs and made it possible to extract the relatively impermeable and uneconomical reservoirs. The production rate of oil and gas wells increases proportional to hydraulic fracture aperture or crack opening displacement (COD). This is an important parameter i...

2003
Yang Shen Cecily J. Wolfe Sean C. Solomon

Receiver functions derived from body waves recorded in Iceland and on the Hawaiian Islands reveal a seismic velocity discontinuity at about 1050 km depth beneath the two regions of presumed mantle upwelling. The waveforms of the converted phases from the mid-mantle discontinuity indicate a velocity increase with depth. The lack of consistent scattering found in recent systematic searches for se...

Journal: :Engineering Applications of Computational Fluid Mechanics 2021

This paper studies the interaction of two droplets splashing on a stationary film. A source term is included in large-density-ratio pseudopotential lattice Boltzmann method to achieve tuneable surface tension. model offers excellent numerical accuracy and stability for droplet impacts liquid films. The influence Reynolds number, Weber film thickness, horizontal/vertical distance between crown g...

2012
Risheng Chu Brandon Schmandt Don V. Helmberger

[1] Upper mantle seismic velocity structures in both vertical and horizontal directions are key to understanding the structure and mechanics of tectonic plates. Recent deployment of the USArray Transportable Array (TA) in the Midwestern United States provides an extraordinary regional earthquake data set to investigate such velocity structure beneath the stable North American craton. In this pa...

2000
Axel J. Remde Evelyn H. Pfaffenberger Heinz Wörn

This paper deals with the handling of deformable linear objects (DLOs), such as hoses, wires or leaf springs, bases on force/torque sensing. First, we describe the characteristic change of force and moment for all single-contact transitions which may occur between DLO and a rigid polyhedron obstacle. Second, we present data processing algorithms for the automated detection of state transitions ...

Journal: :International Journal for Numerical and Analytical Methods in Geomechanics 2018

Journal: :Journal of refractive surgery 2013
Hosik Hwang Young Sik Yoo Chang Won Park Choun-Ki Joo

Intracorneal ring segments (ICRS) have been used in patients with keratoconus for slowing keratoconic progression and delaying keratoplasty.1,2 However, we experienced anterior optical coherence tomography (OCT) image distortion of the iris in patients with ICRS insertion by chance. Some femtosecond laser cataract surgery systems use OCT images of the cornea, anterior lens capsule, and nucleus ...

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