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Journal articles on the topic 'Displacement fields'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Epstein, J. S., W. G. Reuter, and D. D. Keiser. "Crack embrittlement displacement fields." Optics and Lasers in Engineering 13, no. 1 (1990): 3–16. http://dx.doi.org/10.1016/0143-8166(90)90036-9.

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2

TAEPRASARTSIT, SOMPON. "USING VON KARMAN NONLINEAR DISPLACEMENT FUNCTIONS IN THE FINITE ELEMENT ANALYSIS OF FUNCTIONALLY GRADED COLUMN." International Journal of Computational Methods 09, no. 03 (2012): 1250042. http://dx.doi.org/10.1142/s0219876212500429.

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This paper focuses on deriving the exact displacement fields of a functionally graded column (FGC) subjected to mechanical and thermal loads under the assumptions of the Timoshenko beam theory and von Karman strains. Valid only when an axial load is present, the obtained displacement fields are, therefore, not applicable in pure bending analysis. These displacement fields are used as the interpolation functions for formulating static finite element equations whose DOFs are arbitrary constants rather than nodal displacements. The element is super-convergent in von Karman nonlinear analysis, and

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3

Xia, Yong Jun, and Qian Miao. "Large Deformation Geometric Nonlinear Beam Element Based on U.L. Format." Advanced Materials Research 446-449 (January 2012): 3596–603. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.3596.

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Based on the geometric deformation of the Euler-Bernoulli beam element, the geometric nonlinear Euler-Bernoulli beam element based on U.L. formulation is derived. The element’s transverse first-order displacement field is constructed using the cubic Hermite interpolation polynomial, and the first-order Lagrange interpolation polynomial is used for the axial displacement field. Then the additional displacements induced from the rotation of the elemental are included into the transverse and longitudinal displacement fields, so those displacement fields are expressed as the quadratic function of

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4

Honório, Leonardo M., Milena F. Pinto, Maicon J. Hillesheim, Francisco C. de Araújo, Alexandre B. Santos, and Delfim Soares. "Photogrammetric Process to Monitor Stress Fields Inside Structural Systems." Sensors 21, no. 12 (2021): 4023. http://dx.doi.org/10.3390/s21124023.

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This research employs displacement fields photogrammetrically captured on the surface of a solid or structure to estimate real-time stress distributions it undergoes during a given loading period. The displacement fields are determined based on a series of images taken from the solid surface while it experiences deformation. Image displacements are used to estimate the deformations in the plane of the beam surface, and Poisson’s Method is subsequently applied to reconstruct these surfaces, at a given time, by extracting triangular meshes from the corresponding points clouds. With the aid of th

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5

Konvisar, A. M., V. O. Mikhailov, M. S. Volkova, and V. B. Smirnov. "Model of the Seismic Rupture Surface of the Chignik Earthquake (Alaska, USA) 07.29.2021 Based on SAR Interferometry and GNSS Data." Вулканология и сейсмология 17, no. 5 (2023): 74–83. http://dx.doi.org/10.31857/s0203030623700256.

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The paper presents a new rupture model for the Mw = 8.2 “Chignik” earthquake, which occurred off the coast of the Alaska Peninsula on 29.07.2021. The model is based on the Earth’s surface displacement fields obtained by InSAR (Interferometric synthetic aperture radar) method using images of the ESA Sentinel-1 satellites from 17.07 to 10.08.2021 and data on horizontal displacements at nearest permanent GPS sites from 18.07 to 08.08.2021. Obtained displacement fields include both coseismic and part of postseismic displacements. When constructing a model of the seismic rupture surface, we used F.

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6

Tukiainen, Pekka, and Mark Hughes. "The fracture behavior of birch and spruce in the radial-tangential crack propagation direction at the scale of the growth ring." Holzforschung 67, no. 6 (2013): 673–81. http://dx.doi.org/10.1515/hf-2012-0139.

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Abstract Crack-tip displacement fields have been computed based on digital image correlation for spruce (Picea abies [L.] Karst.) and birch (Betula pendula Roth.) wood, which were submitted to pure mode I loading in the RT-direction under both green and air-dried conditions. Moreover, crack propagation was modeled based on both linear elastic fracture mechanics (LEFM) and nonlinear fracture mechanics, relying on the fictitious crack model (FCM). The measured and modeled load versus the crack-mouth opening displacement (CMOD) curves and displacement fields were compared. In the case of spruce,

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7

Ayasse, Jörg, and Heinrich Müller. "Sculpturing on Discrete Displacement Fields." Computer Graphics Forum 21, no. 3 (2002): 431–40. http://dx.doi.org/10.1111/1467-8659.00603.

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8

Yang, Xue-Min, and Paul M. Davis. "Deformation due to a rectangular tension crack in an elastic half-space." Bulletin of the Seismological Society of America 76, no. 3 (1986): 865–81. http://dx.doi.org/10.1785/bssa0760030865.

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Abstract Closed, analytic expressions are given for the displacement fields, their derivatives, and stresses from a rectangular crack in an elastic half-space having Burger's vector normal to its surface. Displacements are found by integration of Volterra's formula over the crack area using Mindlin's (1936) point force solutions for the elastic half-space. Differentiation of the displacement fields yields expressions for calculating stress and strain throughout the medium. Contours of stresses and displacements are given for selected geometries. The expressions for displacements give identical

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9

Lee, M. W. "Particle displacements on the wall of a borehole from incident plane waves." GEOPHYSICS 52, no. 9 (1987): 1290–96. http://dx.doi.org/10.1190/1.1442389.

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Particle displacements from incident plane waves at the wall of a fluid‐filled borehole are formulated by applying the seismic reciprocity theorem to far‐field displacement fields. Such displacement fields are due to point forces acting on a fluid‐filled borehole under the assumption of long wavelengths. The displacement fields are analyzed to examine the effect of the borehole on seismic wave propagation, particularly for vertical seismic profiling (VSP) measurements. When the shortest wavelength of interest is approximately 25 times longer than the borehole’s diameter, the scattered displace

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10

Feng, Ruitao, Qingyun Du, Huanfeng Shen, and Xinghua Li. "Region-by-Region Registration Combining Feature-Based and Optical Flow Methods for Remote Sensing Images." Remote Sensing 13, no. 8 (2021): 1475. http://dx.doi.org/10.3390/rs13081475.

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While geometric registration has been studied in remote sensing community for many decades, successful cases are rare, which register images allowing for local inconsistency deformation caused by topographic relief. Toward this end, a region-by-region registration combining the feature-based and optical flow methods is proposed. The proposed framework establishes on the calculation of pixel-wise displacement and mosaic of displacement fields. Concretely, the initial displacement fields for a pair of images are calculated by the block-weighted projective model and Brox optical flow estimation,

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11

Sciammarella, Cesar A., Federico M. Sciammarella, and Luciano Lamberti. "Determination of Displacement Fields at the Sub-Nanometric Scale." Materials 12, no. 11 (2019): 1804. http://dx.doi.org/10.3390/ma12111804.

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Macroscopic behavior of materials depends on interactions of atoms and molecules at nanometer/sub-nanometer scale. Experimental mechanics (EM) can be used for assessing relationships between the macro world and the atomic realm. Theoretical models developed at nanometric and sub-nanometric scales may be verified using EM techniques with the final goal of deriving comprehensive but manageable models. Recently, the authors have carried out studies on EM determination of displacements and their derivatives at the macro and microscopic scales. Here, these techniques were applied to the analysis of

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12

Timofeev, V. Yu, D. G. Ardyukov, and A. V. Timofeev. "Variation of displacement fields and Gorny Altai seismic regime." Vulkanologiâ i sejsmologiâ, no. 4 (December 16, 2024): 54–69. https://doi.org/10.31857/s0203030624040048.

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More than twenty years of crust motion measurements by space geodesy method include different epochs of Gorny Altai seismic process. Our study aims at investigating the fields of displacement and deformation in the Gorny Altai region, where we have 20 points-net, situated on big territory, from Novosibirsk in North to Molgolian border at South, and from Kazahstan border at West, to Sayan Mountains at East. Chuya earthquake (September, 2003) separated study period (2000‒2022) to several epochs: pre-seismic – 2000‒2003; 2003‒2004 co-seismic period for epicentral zone; 2004‒2013 post-seismic peri

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13

Souza, Simone, A. T. Avelar, J. M. C. Malbouisson, and B. Baseia. "Conditional displacement operator for traveling fields." Optics Communications 281, no. 10 (2008): 2864–67. http://dx.doi.org/10.1016/j.optcom.2008.01.056.

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14

Tereschenko, T. V., P. B. Sokolov, and O. A. Goncharov. "Graphic-motor adaptation to computer distortions between coordinates of the visual and motor fields." Experimental Psychology (Russia) 11, no. 1 (2018): 92–113. http://dx.doi.org/10.17759/exppsy.2018110106.

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The article presents. The paper is devoted to perceptual-motor coordination and adaptation in the conditions of computer distortion between the coordinates of motor and visual fields. We studied experimentally changes and relationship between the speed and accuracy of motor execution at different angular displacements of the computer mouse movement, adaptation to the changed conditions of the cursor movement perception, gender differences in speed and quality of the graphic-motor task. The experiment was carried out in a computer version. It is used nine conditions of angular displacements (fr

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15

Geers, M. G. D., R. De Borst, and W. A. M. Brekelmans. "Computing strain fields from discrete displacement fields in 2D-solids." International Journal of Solids and Structures 33, no. 29 (1996): 4293–307. http://dx.doi.org/10.1016/0020-7683(95)00240-5.

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16

Pan, Bing, Hui Min Xie, Tao Hua, Wei Ning Wang, and Yan Fang. "Displacement Smoothing and Strain Estimation Using Savitaky-Golay Filters in Digital Image Correlation." Key Engineering Materials 326-328 (December 2006): 135–38. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.135.

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Recently, many research works were concentrated on how to improve the accuracy of displacement fields in digital image correlation (DIC). However, the original displacement fields calculated at discrete locations using DIC are unavoidably contaminated by noises. If the strain fields are directly computed by differentiating the original displacement fields, the noises will be amplified even at a higher level and the resulting strain fields are untrustworthy. To acquire reliably estimation of strain fields, in this paper, Savitaky-Golay (SG) filters are introduced to obtain smoothed displacement

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17

Luo, P.-F., and F. C. Huang. "An experimental study on the mixed-mode crack tip deformation fields in polymethyl methacrylate." Journal of Strain Analysis for Engineering Design 38, no. 4 (2003): 313–28. http://dx.doi.org/10.1243/03093240360692904.

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Stereo vision was used to measure the full three-dimensional deformation field around the crack tip region of a compact tension shear (CTS) specimen made of polymethyl methacrylate (PMMA) subjected to mixed-mode (I/II) loading. The stress intensity factors (SIF), K1 and KII, were then estimated using both measured in-plane and out-of-plane deformation fields. The KI and KII values determined from in-plane displacements are in very good agreement with those determined from out-of-plane displacement. The far-field J integral values computed using the line integral are compared with those evaluat

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18

Butler, James P., Iva Marija Tolić-Nørrelykke, Ben Fabry, and Jeffrey J. Fredberg. "Traction fields, moments, and strain energy that cells exert on their surroundings." American Journal of Physiology-Cell Physiology 282, no. 3 (2002): C595—C605. http://dx.doi.org/10.1152/ajpcell.00270.2001.

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Adherent cells exert tractions on their surroundings. These tractions can be measured by observing the displacements of beads embedded on a flexible gel substrate on which the cells are cultured. This paper presents an exact solution to the problem of computing the traction field from the observed displacement field. The solution rests on recasting the relationship between displacements and tractions into Fourier space, where the recovery of the traction field is especially simple. We present two subcases of the solution, depending on whether or not tractions outside the observed cell boundari

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19

Li, Chenglong, Guohong Zhang, Xinjian Shan, Dezheng Zhao, and Xiaogang Song. "Geometric Variation in the Surface Rupture of the 2018 Mw7.5 Palu Earthquake from Subpixel Optical Image Correlation." Remote Sensing 12, no. 20 (2020): 3436. http://dx.doi.org/10.3390/rs12203436.

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We obtained high-resolution (10 m) horizontal displacement fields from pre- and post-seismic Sentinel-2 optical images of the 2018 Mw7.5 Palu earthquake using subpixel image correlation. From these, we calculated the curl, divergence, and shear strain fields from the north-south (NS) and east-west (EW) displacement fields. Our results show that the surface rupture produced by the event was distributed within the Sulawesi neck (0.0974–0.6632°S) and Palu basin (0.8835–1.4206°S), and had a variable strike of 313.0–355.2° and strike slip of 2.00–6.62 m. The NS and EW displacement fields within the

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20

Skok, Gregor. "A New Spatial Distance Metric for Verification of Precipitation." Applied Sciences 12, no. 8 (2022): 4048. http://dx.doi.org/10.3390/app12084048.

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Precipitation is an essential meteorological variable affecting the biosphere and human societies. At the same time, precipitation is notoriously difficult to predict and verify. A new spatial distance metric for verification of precipitation is presented. It is called the Precipitation Smoothing Distance (PSD). The aim was to develop a measure that would provide a good and meaningful approximation of the displacement of precipitation events in the two fields. An estimate of spatial displacement is very appealing for forecast interpretation because it is easy to understand and mimics how human

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21

Mittelstedt, Christian, and Wilfried Becker. "Thermoelastic Fields in Boundary Layers of Isotropic Laminates." Journal of Applied Mechanics 72, no. 1 (2005): 86–101. http://dx.doi.org/10.1115/1.1827247.

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An approximate approach to the calculation of displacements, strains, and stresses near edges and corners in symmetric rectangular layered plates of dissimilar isotropic materials under thermal load is presented. In the thickness direction the plate is discretized into an arbitrary number of sublayers/mathematical layers. A layerwise linear displacement field is formulated such that the terms according to classical laminate plate theory are upgraded with unknown in-plane functions and a linear interpolation scheme through the layer thickness in order to describe edge and corner perturbations.

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22

Vahidi, M., V. Jafari, M. H. Abyaneh, and SH Vahdani. "Displacement Field Approximations for Force-Based Elements in Large Displacement Analyses." Journal of Applied Mathematics 2012 (2012): 1–11. http://dx.doi.org/10.1155/2012/516290.

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This paper investigates different approximation techniques for planar beam column elements in force-based methods. The three fields, introduced in this review, are: curvature-based displacement interpolation (CBDI) used in matrix-based flexibility formulations, linear displacement approximation applied in state space, and higher-order displacement approximation utilized again in state space. Using these three approximation fields, the responses and their accuracies in some systems are compared in examples. Finally, focusing on the accuracy and regarding the performed analyses, it seems that th

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23

PESTOV, A. B., and BIJAN SAHA. "ON THE NATURAL GAUGE FIELDS OF MANIFOLDS." Modern Physics Letters A 15, no. 32 (2000): 1991–2005. http://dx.doi.org/10.1142/s0217732300002504.

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The gauge symmetry inherent in the concept of manifold has been discussed. Within the scope of this symmetry the linear connection or displacement field can be considered as a natural gauge field on the manifold. The gauge-invariant equations for the displacement field have been derived. It has been shown that the energy–momentum tensor of this field conserves and hence the displacement field can be treated as one that transports energy and gravitates. To show the existence of the solutions of the field equations, we have derived the general form of the displacement field in Minkowski space–ti

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24

Beretta, S., L. Patriarca, and S. Rabbolini. "Stress Intensity Factor calculation from displacement fields." Frattura ed Integrità Strutturale 11, no. 41 (2017): 269–76. http://dx.doi.org/10.3221/igf-esis.41.36.

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25

Sciammarella, Cesar A., Bartolomeo Trentadue, and Federico M. Sciammarella. "Observations Of Displacement Fields In Particulate Composites." Materials Technology 18, no. 4 (2003): 229–33. http://dx.doi.org/10.1080/10667857.2003.11753048.

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26

Flemming, T., M. Hertwig, and R. Usinger. "Speckle interferometry for highly localized displacement fields." Measurement Science and Technology 4, no. 8 (1993): 820–25. http://dx.doi.org/10.1088/0957-0233/4/8/004.

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27

Yates, J. R., M. Zanganeh, and Y. H. Tai. "Quantifying crack tip displacement fields with DIC." Engineering Fracture Mechanics 77, no. 11 (2010): 2063–76. http://dx.doi.org/10.1016/j.engfracmech.2010.03.025.

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28

Karacali, B., and C. Davatzikos. "Estimating Topology Preserving and Smooth Displacement Fields." IEEE Transactions on Medical Imaging 23, no. 7 (2004): 868–80. http://dx.doi.org/10.1109/tmi.2004.827963.

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29

Hao Bi and Wai-Yip Chan. "Rate-distortion optimization of hierarchical displacement fields." IEEE Transactions on Circuits and Systems for Video Technology 8, no. 1 (1998): 18–24. http://dx.doi.org/10.1109/76.660825.

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30

Georgsen, Frode, Per Røe, Anne Randi Syversveen, and Oddvar Lia. "Fault displacement modelling using 3D vector fields." Computational Geosciences 16, no. 2 (2012): 247–59. http://dx.doi.org/10.1007/s10596-011-9257-z.

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31

Kovalev, V. F., and I. P. Mel'nichenko. "Biharmonic potentials and plane isotropic displacement fields." Ukrainian Mathematical Journal 40, no. 2 (1988): 197–99. http://dx.doi.org/10.1007/bf01056476.

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32

Timofeev, V. Yu, D. G. Ardyukov, A. V. Timofeev, and E. V. Boiko. "MODERN MOVEMENTS OF THE CRUST SURFACE IN GORNY ALTAI FROM GPS DATA." Geodynamics & Tectonophysics 10, no. 1 (2019): 123–46. http://dx.doi.org/10.5800/gt-2019-10-1-0407.

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In 2000–2017, the GPS technology was first applied to study inter-seismic, co-seismic and post-seismic processes in the crust of the Altai Mountains (Gorny Altai). Our study aims at investigating the fields of displacement and deformation in the Gorny Altai region as a part of Asia.The 3D displacement fields are reconstructed for the period before the M 7.3 Chuya earthquake that occurred in the southern sector of the Altai GPS network (49° to 55°N, and 81° to 89°E)on 27 September 2003.Anomalous behavior features are discovered in the displacement orientations, as well as in the distribution of

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33

Feng, Y., T. M. Abney, R. J. Okamoto, R. B. Pless, G. M. Genin, and P. V. Bayly. "Relative brain displacement and deformation during constrained mild frontal head impact." Journal of The Royal Society Interface 7, no. 53 (2010): 1677–88. http://dx.doi.org/10.1098/rsif.2010.0210.

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This study describes the measurement of fields of relative displacement between the brain and the skull in vivo by tagged magnetic resonance imaging and digital image analysis. Motion of the brain relative to the skull occurs during normal activity, but if the head undergoes high accelerations, the resulting large and rapid deformation of neuronal and axonal tissue can lead to long-term disability or death. Mathematical modelling and computer simulation of acceleration-induced traumatic brain injury promise to illuminate the mechanisms of axonal and neuronal pathology, but numerical studies re

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34

Nehrkorn, Thomas, Bryan Woods, Thomas Auligné, and Ross N. Hoffman. "Application of Feature Calibration and Alignment to High-Resolution Analysis: Examples Using Observations Sensitive to Cloud and Water Vapor." Monthly Weather Review 142, no. 2 (2014): 686–702. http://dx.doi.org/10.1175/mwr-d-13-00164.1.

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Abstract Alignment errors [i.e., cases where coherent structures (“features”) of clouds or precipitation in the background have position errors] can lead to large and non-Gaussian background errors. Assimilation of cloud-affected radiances using additive increments derived by variational and/or ensemble methods can be problematic in these situations. To address this problem, the Feature Calibration and Alignment technique (FCA) is used here for correcting position errors by displacing background fields. A set of two-dimensional displacement vectors is applied to forecast fields to improve the

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35

Woo, Kwang Sung, Yoo Mi Kwon, Dong Woo Lee, and Hee Joong Kim. "LEFM Analysis of V-Notched Aluminum Plates Using Higher-Order Layerwise Model." Advanced Materials Research 898 (February 2014): 355–58. http://dx.doi.org/10.4028/www.scientific.net/amr.898.355.

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Higher-order layerwise model is proposed to determine stress intensity factors using virtual crack closure technique for V-notched plates. Present method is based on p-convergent approach and adopts the concept of subparametric element. In assumed displacement field, strain-displacement relations and 3-D constitutive equations of a layer are obtained by combination of 2-D and 1-D higher-order shape functions. Thus, it allows independent implementation of p-refinement for in-plane and transversal displacements. In the proposed elements, the integrals of Legendre polynomials and Gauss-Lobatto te

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36

Takeda, Nobuo, Shinji Ogihara, Satoshi Suzuki, and Akira Kobayashi. "Evaluation of Microscopic Deformation in CFRP Laminates with Delamination by Micro-Grid Methods." Journal of Composite Materials 32, no. 1 (1998): 83–100. http://dx.doi.org/10.1177/002199839803200105.

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Micro-grid methods were applied to measure displacements in 90° ply in CFRP cross-ply laminates with only transverse cracks or with both transverse cracks and delaminations. The COD (crack opening displacement) of the transverse cracks were also measured. Micro-grids were printed on the specimen edge surfaces by using the photo-lithography technique. The displacement fields of the specimen edge surface obtained from the experiment were compared with McCartney's [1] and Lee et al.'s [2] analyses which predicted the displacement field of a cross-ply laminate with only transverse cracks. Furtherm

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37

Sarode, A. P., and O. H. Mahajan. "Displacement fields of a Cuboid crystal in a Photoacoustic Cell: Mathematical aspects." Bulletin of the Karaganda University. "Physics" Series 101, no. 1 (2021): 6–11. http://dx.doi.org/10.31489/2021ph1/6-11.

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Photo acoustic effect is popular due to a minimal sample preparation during execution, the ability to examine scattering and opaque sample along with the capability to access depth profile. These features enable Photoacoustic spectroscopy to be used in depth-resolved characterization of solids. Thermal interaction is a basic perspective in solid state physics research regarding industrial devices and components. It is a key factor of fabrication and performance of such devices and components. Today, crystalline solids are widely studied due to their wide scientific and industrial applications.

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38

Beom, H. G., and Y. Y. Earmme. "The Elastic Field of an Elliptic Cylindrical Inclusion in a Laminate With Multiple Isotropic Layers." Journal of Applied Mechanics 66, no. 1 (1999): 165–71. http://dx.doi.org/10.1115/1.2789143.

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An elliptic cylindrical inclusion with an eigenstrain in an infinite laminate composed of multiple isotropic layers is analyzed. The problem is formulated by using the classical laminated plate theory in which displacement fields in the laminated plate are expressed in terms of in-plane displacements on the main plane and transverse displacement. Employing a method based on influence functions, an integral type solution to the equilibrium equation is expressed in terms of the eigenstrain. Closed-Form solutions for the elastic fields are obtained by evaluating the integrals explicitly for inter

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39

Chao, C. C., T. P. Tung, and H. H. Li. "3-D Stress Analysis of Cross-Ply Laminated Composites." Journal of Energy Resources Technology 116, no. 3 (1994): 240–49. http://dx.doi.org/10.1115/1.2906449.

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A consistent higher-order theory is presented for static deformation and stress analysis of cross-ply thick laminates. Emphasis is placed on consistence with the 3-D boundary conditions and interlaminar stress continuity, exterior and interior, respectively, to the simply supported rectangular plate. All edges and lateral surfaces are considered stress-free, while surface traction and applied load equilibrium is maintained in the loading area. Individual layer displacement fields are expressed in terms of in-plane double Fourier series and cubic polynomials in thickness coordinates with contin

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40

Woo, Kwang S., and Jae S. Ahn. "Implementation of Virtual Crack Closure Technique for Damaged Composite Plates Using Higher-Order Layerwise Model." Advances in Materials Science and Engineering 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/684065.

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A higher-order layerwise model is proposed to determine stress intensity factors using virtual crack closure technique for single-edge-crack aluminum plates with patch repairs. The present method is based onp-convergent approach and adopts the concept of subparametric elements. In assumed displacement fields, strain-displacement relations and three-dimensional constitutive equations of layers are obtained by combination of two- and one-dimensional shape functions. Thus, it allows independent implementation ofp-refinement for in-plane and transversal displacements. In the proposed elements, the

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41

Elshan Aliyev, Azer Gasimli, Elshan Aliyev, Azer Gasimli. "ON DEVELOPMENT OF OIL FIELDS." ETM - Equipment, Technologies, Materials 21, no. 03 (2024): 04–10. http://dx.doi.org/10.36962/etm21032024-01.

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Using a literature review, the article concludes that the displacement of oil by surfactants affects interrelated factors: by affecting the surface tension at the oil-water-rock interface, SAM adsorption occurs on the surface of pore channels, rock surface water and oil wetting changes, the oil layer is broken up and washed from the rock surface, the dispersion of oil in water stabilizes, the phase permeability of the porous medium changes, and finally, the forced displacement of oil by the water phase occurs. Keywords: gravity, elastic, capillary forces, adhesion, adsorption.

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42

Bastawros, A. F., and A. S. Voloshin. "Thermal Strain Measurements in Electronic Packages Through Fractional Fringe Moire´ Interferometry." Journal of Electronic Packaging 112, no. 4 (1990): 303–8. http://dx.doi.org/10.1115/1.2904382.

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Fractional Fringe Moire´ Interferometry (FFMI)—a new experimental methodology to measure accurately deformations and consequently strains—has been successfully implemented to determine thermally induced strains in a specimen made from an AT&T 1MB DRAM device. The specimen was heated uniformly from room temperature to 90° C. Resulting moire´ fringe patterns were recorded, analyzed using digital-image-processing and in plane displacements in the device were determined. Strain components were computed by simple differentiation of the displacement fields. The technique proved to be successful

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Walker, C. A., and Jamasri. "Mixed-mode stress intensity factors in finite, edge-cracked orthotropic plates." Journal of Strain Analysis for Engineering Design 30, no. 2 (1995): 83–90. http://dx.doi.org/10.1243/03093247v302083.

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A generalized experimental method for measuring mixed-mode stress intensity factors is described for use in orthotropic materials. Moiré interferometry has been used to record the whole field surface displacements of double-edge cracked specimens made from unidirectional laminated composites. The moiré patterns were subsequently used to determine mode I and mode II stress intensity factors ( KI and KII) by utilizing the displacement fields around the crack tip. The equations expressing KI and KII as functions of the displacement fields were reformulated to encompass the orthotropic material co

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Guo, Yapeng, Peng Zhong, Yi Zhuo, Fanzeng Meng, Hao Di, and Shunlong Li. "Displacement Field Calculation of Large-Scale Structures Using Computer Vision with Physical Constraints: An Experimental Study." Sustainability 15, no. 11 (2023): 8683. http://dx.doi.org/10.3390/su15118683.

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In recent years, computer vision-based structural displacement acquisition technique has received wide attention and research due to the advantages of easy deployment, low-cost, and non-contact. However, the displacement field acquisition of large-scale structures is a challenging topic as a result of the contradiction of camera field-of-view and resolution. This paper presents a large-scale structural displacement field calculation framework with integrated computer vision and physical constraints using only one camera. First, the full-field image of the large-scale structure is obtained by p

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Antony, S. J., and Zuhair Kadhim Jahanger. "Local Scale Displacement Fields in Grains–Structure Interactions Under Cyclic Loading: Experiments and Simulations." Geotechnical and Geological Engineering 38, no. 2 (2019): 1277–94. http://dx.doi.org/10.1007/s10706-019-01088-5.

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Abstract Soils encounter cyclic loading conditions in situ, for example during the earthquakes and in the construction sequences of pavements. Investigations on the local scale displacements of the soil grain and their failure patterns under the cyclic loading conditions are relatively scarce in the literature. In this study, the local displacement fields of a dense sand layer interacting with a rigid footing under the plane-strain condition are examined using both experiments and simulations. Three commonly used types of cyclic loading conditions were applied on the footing. Digital particle

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Dahmen, U., C. J. D. Hetherington, and K. H. Westmacott. "A technique for measuring small atomic displacements in HREM images." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 4 (1990): 338–39. http://dx.doi.org/10.1017/s0424820100174825.

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An important problem in materials science is the measurement of elastic strain fields, lattice rotations and rigid body shifts. High resolution microscopy is a simple and direct means of mapping displacement fields near defects, interfaces or precipitates. Large and highly localized atomic relaxations such as those found near the core of dislocations or structural units in grain boundaries are sensitive to thickness and defocus conditions and must be interpreted with the use of image simulations. However, displacements of small magnitude or displacement fields that vary slowly enough to allow

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Lee, Kwang Ho, and Gap Su Ban. "Stress and Displacement Fields at a Transient Crack Tip Propagating in Functionally Graded Materials." Key Engineering Materials 345-346 (August 2007): 481–84. http://dx.doi.org/10.4028/www.scientific.net/kem.345-346.481.

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Stress and displacement fields for a transient crack tip propagating along gradient in functionally graded materials (FGMs) with an exponential variation of shear modulus and density under a constant Poisson's ratio are developed. The equations of transient motion in nonhomogeneous materials are developed using displacement potentials and the solution to the displacement fields and the stress fields for a transient crack propagating at nonuniform speed though an asymptotic analysis.

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GÓIS, WESLEY, and SERGIO PERSIVAL BARONCINI PROENÇA. "GENERALIZED FINITE ELEMENT METHOD ON NONCONVENTIONAL HYBRID-MIXED FORMULATION." International Journal of Computational Methods 09, no. 03 (2012): 1250038. http://dx.doi.org/10.1142/s0219876212500387.

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The generalized finite element method (GFEM) is applied to a nonconventional hybrid-mixed stress formulation (HMSF) for plane analysis. In the HMSF, three approximation fields are involved: stresses and displacements in the domain and displacement fields on the static boundary. The GFEM–HMSF shape functions are then generated by the product of a partition of unity associated to each field and the polynomials enrichment functions. In principle, the enrichment can be conducted independently over each of the HMSF approximation fields. However, stability and convergence features of the resulting n

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Barber, J. R. "Surface Displacements due to a Steadily Moving Point Force." Journal of Applied Mechanics 63, no. 2 (1996): 245–51. http://dx.doi.org/10.1115/1.2788856.

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Closed-form expressions are obtained for the normal surface displacements due to a normal point force moving at constant speed over the surface of an elastic half-space. The Smirnov-Sobolev technique is used to reduce the problem to a linear superposition of two-dimensional stress and displacement fields.

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Yadav, Ramhit. "Variation of Displacement Fields for Great Earthquakes due to Rectangular Fault System." Orchid Academia Siraha 1, no. 1 (2022): 1–12. http://dx.doi.org/10.3126/oas.v1i1.52064.

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The expressions for the displacement fields produced by a finite rectangular fault associated with great earthquakes are explained by elastic theory of dislocation. The variation of displacement fields has been estimated by considering the elastic half-space in contact with traction free boundary and varying depth, distance from top to bottom of the fault. It is also carried out in an infinite elastic medium. Also, the variation of displacement fields with the distance from fault especially for strike slip fault shows that even if different fault length and approximately equal magnitudes, the

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