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Journal articles on the topic 'Compressional stress'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Shen, Jue, Shaoyu Lu, Tianyue Sun, and Yan Feng. "Elastic–plastic transition of compressional shocks in a perfect 2D Yukawa crystal." Physics of Plasmas 29, no. 5 (2022): 053701. http://dx.doi.org/10.1063/5.0088820.

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Molecular dynamical simulations are performed to systematically investigate the elastic–plastic transition of compressional shocks in a perfect two-dimensional Yukawa crystal. Following the tradition in the theory of elasticity, a stress tensor is used to characterize the state of stress of the simulated systems, and then the variation of the maximum shear stress in the postshock region is precisely obtained. It is found that, as the compression level gradually increases in the 2D Yukawa crystal, the maximum shear stress first increases linearly with the compressional speed until it reaches it

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2

Davidson, J. K. "GLOBALLY SYNCHRONOUS COMPRESSIONAL PULSES IN EXTENSIONAL BASINS: IMPLICATIONS FOR HYDROCARBON EXPLORATION." APPEA Journal 35, no. 1 (1995): 169. http://dx.doi.org/10.1071/aj94012.

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It is possible to interpret many continental stresses on the Global Stress Map (Zoback, 1992) in terms of plate tectonics. Plate tectonics on a constant radius earth predicts a state of zero stress in Australia, except for northerly to northeasterly compression along the northern margin where Australia interacts with the Pacific Plate. However, the continent is everywhere in a state of significant horizontal compression, generally directed towards its centre.In southeastern Australia the current maximum horizontal compressional stress is directed northwestwards. While Gippsland Basin and Bass

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3

Nishii, Yasushi, Glenn T. Sameshima, and Chie Tachiki. "Digital Photoelastic Analysis of TAD-Supported Maxillary Arch Distalization." Applied Sciences 12, no. 4 (2022): 1949. http://dx.doi.org/10.3390/app12041949.

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The objective of this study was to determine whether the distribution of compressional and tensional stress around tooth roots is influenced by the position of a temporary anchorage device and the length of the retraction hook during the distalization of the maxillary dentition. A photoelastic orthodontic model was made of photoelastic epoxy resin. Six combinations of three retraction hook lengths and two posterior Temporary skeletal anchorage devices (TAD) positions were established. Stress was applied through an elastic chain for each of the combinations. Digital photoelastic stress analysis

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4

Maestro, Adolfo, and Jerónimo López-Martínez. "Cenozoic stress field in the southwestern Antarctic Peninsula from brittle mesostructures in Wright Peninsula, Adelaide Island." Polish Polar Research 32, no. 1 (2011): 39–58. http://dx.doi.org/10.2478/v10183-011-0006-8.

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Cenozoic stress field in the southwestern Antarctic Peninsula from brittle mesostructures in Wright Peninsula, Adelaide IslandPalaeostresses inferred from brittle mesostructures in the southern Wright Peninsula show a stress field characterized by compressional, strike-slip and extensional regime stress states. The compressional stress (σ1) shows a main NW-SE direction and the extensional stress (σ3) shows a relative scattering with two main modes: NE-SW to E-W and NW-SE. The maximum horizontal stress (σy) has a bimodal distribution with NW-SE and NE-SW direction. The compressional orientation

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5

Wang, Mingwen, Yunqiang Sun, Gang Luo, and Rui Zhang. "Stress perturbations around the deep salt structure of Kuqa depression in the Tarim Basin." Interpretation 7, no. 3 (2019): T647—T656. http://dx.doi.org/10.1190/int-2018-0177.1.

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Drilling into and around salt bodies can present different kinds of geohazards, such as shrinkage or stuck and crushed casings, resulting in well abandonment and huge economic losses. These engineering disasters are more likely to happen when ignoring the stress perturbations caused by the geomechanical interactions between the salt and surrounding sediments. For a better understanding of the stress perturbations, we use a commercial finite-element software, Abaqus, to build a 2D plane-strain finite-element model of the salt structure of Kuqa depression in the Tarim Basin and simulate the stre

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6

Xu, Shiyang, Jianming Guo, Hailong Fan, and Xiang Liu. "Cenozoic paleostress field of tectonic evolution in Qaidam Basin, northern Tibet." Open Geosciences 13, no. 1 (2021): 736–47. http://dx.doi.org/10.1515/geo-2020-0262.

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Abstract This article analyzes the stress fields in the Qaidam Basin since the entire Cenozoic using finite element numerical simulations. The stress fields are investigated by analyzing tectonic joints and the GPS velocity field in the basin. The relationship between the stress field patterns and the tectonic activity of the basin was discussed. Based on previous research on the uplift of the Tibetan Plateau, five stages of the tectonic evolution of the Qaidam Basin are modeled. The simulation results show that the stress trajectories in the Oligocence and the Pliocene–Quaternary were similar

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7

Zhang, Tian, Weilin Zhu, Qiang Fu, and Xiaowei Fu. "Structural Characteristics and Tectonic Evolution of the Wunansha Uplift in the South Yellow Sea Basin, China." Geofluids 2022 (May 25, 2022): 1–11. http://dx.doi.org/10.1155/2022/1565978.

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By selecting typical seismic sections to carry out detailed structural interpretation, the structural style features of the Wunansha Uplift in the South Yellow Sea basin were systematically combined, and the compressional structures (imbricate, opposite/back thrust, and Y-shaped structures), strike-slip faults (positive flower-shaped faults), and extensional normal faults (listric-shaped normal faults) were identified. On this basis, combined with the characteristics of the regional stress field and the background of deep geodynamics, the genetic mechanism and structural evolution of the struc

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8

Tsai, Wan T. "Uniaxial Compressional Stress‐Strain Relation of Concrete." Journal of Structural Engineering 114, no. 9 (1988): 2133–36. http://dx.doi.org/10.1061/(asce)0733-9445(1988)114:9(2133).

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9

McDonald, B. E. "Modeling nonlinear compressional waves in marine sediments." Nonlinear Processes in Geophysics 16, no. 1 (2009): 151–57. http://dx.doi.org/10.5194/npg-16-151-2009.

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Abstract. A computational model is presented which will help guide and interpret an upcoming series of experiments on nonlinear compressional waves in marine sediments. The model includes propagation physics of nonlinear acoustics augmented with granular Hertzian stress of order 3/2 in the strain rate. The model is a variant of the time domain NPE (McDonald and Kuperman, 1987) supplemented with a causal algorithm for frequency-linear attenuation. When attenuation is absent, the model equations are used to construct analytic solutions for nonlinear plane waves. The results imply that Hertzian s

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10

Kashi Kalhori, Sadafnaz, D. Grant Allen, and Arun Ramachandran. "A compressional rheological approach to characterize biosludge with implications to dewatering." Journal of Rheology 69, no. 4 (2025): 553–72. https://doi.org/10.1122/8.0000951.

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Biosludge is a complex material, and it often presents challenges in industries such as the pulp and paper sector, particularly during dewatering processes. This study investigates the mechanical behavior of the biosludge using compressional rheology to understand the factors governing cake formation, permeability, and compressibility. Our findings reveal that increasing the solids concentration from ∼5 to ∼10 wt. % results in a substantial reduction in permeability, decreasing it by over an order of magnitude and thereby limiting dewatering efficiency. This increase in solids concentration al

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11

Wu, Lizhou, Jianting Zhou, Jun Yang, Jingzhou Xin, Hong Zhang, and Bu Li. "Initiation and Fracture Characteristics of Different Width Cracks of Concretes under Compressional Loading." Applied Sciences 12, no. 10 (2022): 4803. http://dx.doi.org/10.3390/app12104803.

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A stress concentration at a crack tip may cause fracture initiation even under low-stress conditions. The maximum axial stress theory meets the challenges of explaining the fracture propagation of a non-closed fracture of cracked concretes under compressional loading. Uniaxial loading tests of single-crack concrete specimens were carried out and a numerical simulation of fracture propagation under uniaxial compression was performed. The radial shear stress criterion for a mode-II fracture is proposed to examine the stress intensity factor (SIF) of the pre-crack specimens under compressional lo

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12

Sliz, Krzysztof (Kris), and Saleh Al-Dossary. "Seismic attributes and kinematic azimuthal analysis for fracture and stress detection in complex geologic settings." Interpretation 2, no. 1 (2014): SA67—SA75. http://dx.doi.org/10.1190/int-2013-0082.1.

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Fractured rocks can exhibit good reservoir properties and provide high-permeability passages for hydrocarbons. Understanding fracture and stress systems is a key element in successful horizontal drilling and fracking for unconventional reservoir exploration. As a result, there is growing interest in methods that can estimate fracture orientation, density, and style. However, fracture detection using surface seismic data is challenging, and the results are usually ambiguous. Each method has its own strengths and weaknesses and responds to fractures and compressional stress in different ways. A

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13

Tutuncu, Azra N., Augusto L. Podio, and Mukul M. Sharma. "An experimental investigation of factors influencing compressional‐ and shear‐wave velocities and attenuations in tight gas sandstones." GEOPHYSICS 59, no. 1 (1994): 77–86. http://dx.doi.org/10.1190/1.1443536.

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Results are presented for compressional and shear velocities and attenuations in fully brine‐saturated tight gas cores with porosities from 3 to 11.9 percent and clay contents from 1 to 38 percent. The influence of porosity, clay content, frequency, and stress on velocities and attenuations were examined using the amplitude spectra of P‐ and S‐waves in the frequency domain. Attenuations of samples were obtained using the spectral ratio method. For a few selected samples the attenuations were also measured using the length correlation method and these results were compared with the spectral rat

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14

Faure, Stéphane, Alain Tremblay, and Michel Malo. "Reconstruction of Taconian and Acadian paleostress regimes in the Quebec and northern New Brunswick Appalachians." Canadian Journal of Earth Sciences 41, no. 5 (2004): 619–34. http://dx.doi.org/10.1139/e04-020.

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A numerical analysis of fault populations was applied in the Quebec and northern New Brunswick Appalachians to characterize paleostress fields attributed to the Taconian and Acadian orogenies. The first brittle deformation documented in the external domain of the Humber Zone is associated with the thin-skinned tectonics of the Taconian orogen. The Taconian brittle deformation, characterized by northsouth to NESW reverse conjugated brittle faults, evolved under a pure shear compressional regime (vertical σ3 axes) with σ1 axes oriented ESEWNW. The ENEWSW dextral and NW-SE sinistral faults th

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15

Maestro, A., J. López-Martínez, F. Bohoyo, et al. "Geodynamic implications of the Cenozoic stress field on Seymour Island, West Antarctica." Antarctic Science 20, no. 2 (2008): 173–84. http://dx.doi.org/10.1017/s0954102007000892.

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AbstractPalaeostress inferred from brittle mesostructures in Seymour (Marambio) Island indicates a Cenozoic to Recent origin for an extensional stress field, with only local compressional stress states. Minimum horizontal stress (σ3) orientations are scattered about two main NE–SW and NW–SE modes suggesting that two stress sources have been responsible for the dominant minimum horizontal stress directions in the north-western Weddell Sea. Extensional structures within a broad-scale compressional stress field can be linked to both the decrease in relative stress magnitudes from active margins t

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16

Tsaplev, V. M., R. S. Konovalov, and S. I. Konovalov. "The Effect of Static Stress on the Anisotropy of Piezoceramics." Materials 15, no. 15 (2022): 5186. http://dx.doi.org/10.3390/ma15155186.

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The influence of static compressional stress on the anisotropy of piezoelectric ceramics of BaTiO3 and PZT types is considered theoretically and experimentally. Static compression changes the domain structure of piezoceramics. These changes occur due to the reorientation of mostly 90° domain axes. As a result, all the parameters of the material change—elastic, piezoelectric, and dielectric. Some of them increase, and some, on the contrary, decrease. Changes occur in a nonlinear way, and higher-order parameters appear. The relationship between the total volume of the reoriented domains and the

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17

Renlie, Lasse, and Arne M. Raaen. "Acoustic wave propagation in a fluid‐filled borehole surrounded by a formation with stress‐relief‐induced anisotropy." GEOPHYSICS 58, no. 9 (1993): 1257–69. http://dx.doi.org/10.1190/1.1443509.

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The stress relief associated with the drilling of a borehole may lead to an anisotropic formation in the vicinity of the borehole, where the properties in the radial direction differ from those in the axial and tangential directions. Thus, axial and radial compressional acoustic velocities are different, and similarly, the velocity of an axial shear‐wave depends on whether the polarization is radial or tangential. A model was developed to describe acoustic wave propagation in a borehole surrounded by a formation with stress‐relief‐induced radial transverse isotropy (RTI). Acoustic full wavefor

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18

Mutlu, Ahu Kömeç. "Seismicity, focal mechanism, and stress tensor analysis of the Simav region, western Turkey." Open Geosciences 12, no. 1 (2020): 479–90. http://dx.doi.org/10.1515/geo-2020-0010.

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AbstractThis study focuses on the seismicity and stress inversion analysis of the Simav region in western Turkey. The latest moderate-size earthquake was recorded on May 19, 2011 (Mw 5.9), with a dense aftershock sequence of more than 5,000 earthquakes in 6 months. Between 2004 and 2018, data from earthquake events with magnitudes greater than 0.7 were compiled from 86 seismic stations. The source mechanism of 54 earthquakes with moment magnitudes greater than 3.5 was derived by using a moment tensor inversion. Normal faults with oblique-slip motions are dominant being compatible with the NE-S

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19

Friederich, W., A. Brüstle, L. Küperkoch, T. Meier, S. Lamara, and Egelados Working Group. "Focal mechanisms in the southern Aegean from temporary seismic networks – implications for the regional stress field and ongoing deformation processes." Solid Earth 5, no. 1 (2014): 275–97. http://dx.doi.org/10.5194/se-5-275-2014.

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Abstract. The lateral variation of the stress field in the southern Aegean plate and the subducting Hellenic slab is determined from recordings of seismicity obtained with the CYCNET and EGELADOS networks in the years from 2002 to 2007. First motions from 7000 well-located microearthquakes were analysed to produce 540 well-constrained focal mechanisms. They were complemented by another 140 derived by waveform matching of records from larger events. Most of these earthquakes fall into 16 distinct spatial clusters distributed over the southern Aegean region. For each cluster, a stress inversion

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20

Phillips, Thomas B., Christopher A. L. Jackson, and James R. Norcliffe. "Pre-inversion normal fault geometry controls inversion style and magnitude, Farsund Basin, offshore southern Norway." Solid Earth 11, no. 4 (2020): 1489–510. http://dx.doi.org/10.5194/se-11-1489-2020.

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Abstract. Compressional strains may manifest along pre-existing structures within the lithosphere, far from the plate boundaries along which the causal stress is greatest. The style and magnitude of the related contraction is expressed in different ways, depending on the geometric and mechanical properties of the pre-existing structure. A three-dimensional approach is thus required to understand how compression may be partitioned and expressed along structures in space and time. We here examine how post-rift compressional strains are expressed along the northern margin of the Farsund Basin dur

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21

Bell, J. S., and P. Wu. "High horizontal stresses in Hudson Bay, Canada." Canadian Journal of Earth Sciences 34, no. 7 (1997): 949–57. http://dx.doi.org/10.1139/e17-079.

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Breakouts in four wells in Hudson Bay suggest that the Paleozoic section is currently subject to maximum horizontal compression about a northeast–southwest axis, with some local deflection in horizontal stress orientations related to faults. The Paleozoic section does not appear to be detached from the crystalline basement of the Canadian Shield, despite the presence of thick Silurian halite-rich intervals. The northeast–southwest compressional axis documented in the Hudson Bay Basin is compatible with stress orientations mat have been measured in other parts of cratonic North America. Leak-of

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22

Johnson-Groh, Mara. "Under pressure: testing the compressional stress stiffening of synthetic detergents." Scilight 2022, no. 37 (2022): 371105. http://dx.doi.org/10.1063/10.0013823.

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23

Lin, Yu, Yuan Yang, Hongwei Ma, Yi Cui, and Wendy L. Mao. "Compressional Behavior of Bulk and Nanorod LiMn2O4 under Nonhydrostatic Stress." Journal of Physical Chemistry C 115, no. 20 (2011): 9844–49. http://dx.doi.org/10.1021/jp112289h.

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24

Melnikov, N. N., S. P. Mesyats, S. P. Ostapenko, et al. "Investigation of Disturbed Rock Zones in Open-Pit Mine Walls by Seismic Tomography." Key Engineering Materials 755 (September 2017): 147–52. http://dx.doi.org/10.4028/www.scientific.net/kem.755.147.

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The paper presents the results of measurements of compressional and shear wave velocities in the near-surface zone in the Zhelezny open pit mine, the Kovdor GOK (Kovdor Mineral Producing and Processing Company). Data on the seismic wave velocities are used to estimate Young's modulus and Poisson's ratio. Poisson's ratios derived from the compressional-to-shear velocity ratios are used to locate fractures that are due to stress redistribution and weathering processes in the stepped walls of the open pit mine.

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Vejbæk, Ole Valdemar. "Post mid-Cretaceous inversion tectonics in the Danish Central Graben – regionally synchronous tectonic events?" Bulletin of the Geological Society of Denmark 49 (December 2, 2002): 129–44. http://dx.doi.org/10.37570/bgsd-2003-49-11.

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Structural analysis of the Upper Cretaceous to Palaeogene succession in the Danish Central Graben suggests continuous inversion heralded in the Late Hauterivian and continuing into Palaeogene times. The following phases of increased intensity are identified: 1) latest Santonian, 2) Mid Campanian, 3) late Maastrichtian, 4) Late Paleocene – Eocene, and 5) Early Oligocene. Phases 1 through 3 are Sub-Hercynian, phase 4 is Laramide, and phase 5 is Pyrenean according to Alpine Orogen nomenclature. A temporal change in structural style is noted from early inversion confined to narrow zones associated

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26

McDonald, M. R., S. N. Gaines, and M. S. Diederichs. "Interpreting ultrasonic pulse velocities and elastic properties of lac du bonnet granite under compression." IOP Conference Series: Earth and Environmental Science 1124, no. 1 (2023): 012035. http://dx.doi.org/10.1088/1755-1315/1124/1/012035.

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Abstract The measurement of ultrasonic velocities in rock core is a straightforward, non-destructive, economic method to estimate rock material properties conducted by emitting high frequency acoustic waves through the rock core. The velocities of compressional and shear waves (P- and S-waves, respectively) are influenced by the unique microstructural characteristics of the rock. Once wave velocities and bulk density for each sample have been determined, the dynamic elastic material constants such as Young’s modulus, Poisson’s ratio, and shear modulus can be calculated. In theory, it is expect

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27

Ezati, Maryam, Ahmad Rashidi, Ebrahim Gholami, et al. "Paleostress Analysis in the Northern Birjand, East of Iran: Insights from Inversion of Fault-Slip Data." Minerals 12, no. 12 (2022): 1606. http://dx.doi.org/10.3390/min12121606.

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This research assessed stress regimes and fields in eastern Iran using fault-slip data and the tectonic events associated with these changes. Our stress analysis of the brittle structures in the Shekarab Mountains revealed significant changes in stress regimes from the late Cretaceous to the Quaternary. Reconstructing stress fields using the age and sense of fault movements showed that during the late Cretaceous, the direction of the maximum horizontal stress axes (σ1) under a compressional stress regime was ~N290°. This stress regime led to the uplifting of ophiolites and peridotites in easte

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Lei, Ting, Bikash K. Sinha, and Michael Sanders. "Estimation of horizontal stress magnitudes and stress coefficients of velocities using borehole sonic data." GEOPHYSICS 77, no. 3 (2012): WA181—WA196. http://dx.doi.org/10.1190/geo2011-0277.1.

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We described a nondestructive method to estimate the maximum and minimum horizontal stresses and formation nonlinear elastic constants using sonic data from a vertical wellbore. This method for the estimation of horizontal stress magnitudes consists of using radial profiles of the three shear moduli obtained from the Stoneley and cross-dipole sonic data in a vertical wellbore. These shear moduli change as a function of formation stresses, which in turn change as a function of the radial position away from the wellbore. Two difference equations were constructed from the three far-field shear mo

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Dai, N., A. Vafidis, and E. R. Kanasewich. "Wave propagation in heterogeneous, porous media: A velocity‐stress, finite‐difference method." GEOPHYSICS 60, no. 2 (1995): 327–40. http://dx.doi.org/10.1190/1.1443769.

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A particle velocity‐stress, finite‐difference method is developed for the simulation of wave propagation in 2-D heterogeneous poroelastic media. Instead of the prevailing second‐order differential equations, we consider a first‐order hyperbolic system that is equivalent to Biot’s equations. The vector of unknowns in this system consists of the solid and fluid particle velocity components, the solid stress components, and the fluid pressure. A MacCormack finite‐difference scheme that is fourth‐order accurate in space and second‐order accurate in time forms the basis of the numerical solutions f

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30

Zhang, Zetian, Ru Zhang, Zhiguo Cao, Mingzhong Gao, Yong Zhang, and Jing Xie. "Mechanical Behavior and Permeability Evolution of Coal under Different Mining-Induced Stress Conditions and Gas Pressures." Energies 13, no. 11 (2020): 2677. http://dx.doi.org/10.3390/en13112677.

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The gas permeability and mechanical properties of coal, which are seriously influenced by mining-induced stress evolution and gas pressure conditions, are key issues in coal mining and enhanced coalbed methane recovery. To obtain a comprehensive understanding of the effects of mining-induced stress conditions and gas pressures on the mechanical behavior and permeability evolution of coal, a series of mining-induced stress unloading experiments at different gas pressures were conducted. The test results are compared with the results of conventional triaxial compression tests also conducted at d

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31

Dillen, Menno W. P., Helma M. A. Cruts, Jeroen Groenenboom, Jacob T. Fokkema, and Adri J. W. Duijndam. "Ultrasonic velocity and shear‐wave splitting behavior of a Colton sandstone under a changing triaxial stress." GEOPHYSICS 64, no. 5 (1999): 1603–7. http://dx.doi.org/10.1190/1.1444664.

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Ultrasonic experiments on a dry Colton sandstone placed in a triaxial pressure machine show that effective stress changes lead to distinct anisotropic velocity changes in compressional waves and shear waves. The stress imprint can be recognized from the associated velocity pattern by relating the velocities to the three normal stress directions. The ultrasonic velocities indicate that the sensitivity of the different waves to stress predominantly depends on stresses applied in the polarization and propagation directions of the particular wave mode. Also, stress‐induced changes in shear‐wave sp

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OU, Z. Y., and D. W. LEE. "EFFECTS OF INTERFACE ENERGY ON MULTIPLE SCATTERING OF PLANE COMPRESSIONAL WAVES BY TWO CYLINDRICAL FIBERS." International Journal of Applied Mechanics 04, no. 04 (2012): 1250040. http://dx.doi.org/10.1142/s1758825112500408.

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The multiple scattering of plane compressional waves by two cylindrical fibers with interface effects is investigated. Based on surface elasticity theory, the wave fields in a nanoscale solid medium can be obtained by applying the eigenfunction expansion method and the Graf's addition theorem. Our results indicate that surface energy significantly affects the diffraction of elastic waves, as the radii of the fibers approach nanometers. The dynamic stress concentration factors at the interfaces between the fibers and the matrix under incident plane compressional waves at different frequencies a

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Holford, Simon, Richard Hillis, Ian Duddy, et al. "Cenozoic post-breakup compressional deformation and exhumation of the southern Australian margin." APPEA Journal 51, no. 1 (2011): 613. http://dx.doi.org/10.1071/aj10044.

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We present results from a margin-wide analysis of the history of post-breakup Cenozoic compressional deformation and related exhumation along the passive southern margin of Australia, based on a regional synthesis of seismic, stratigraphic and thermochronological data. The Cenozoic sedimentary record of the southern margin contains regional unconformities of intra-Lutetian and late Miocene–Pliocene age, which coincide with reconfigurations of the boundaries of the Indo-Australian Plate. Seismic data show that post-breakup compressional deformation and sedimentary basin inversion—characterised

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34

Everitt, Richard A. "Pop-ups and related damage in granite at the Medika Pluton in southeastern Manitoba." Canadian Geotechnical Journal 46, no. 8 (2009): 1001–8. http://dx.doi.org/10.1139/t09-029.

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Stress relief in the form of small displacements and a pop-up has occurred in a line-drilled, blast-free quarry in Archean granite 100 km east of Winnipeg. A 60 m by 19 m and up to 1.5 m thick block, forming the east wall of the quarry, has undergone deformation and displacement following quarrying. The pop-up base is a low-dipping exfoliation fracture that predates the quarry. Block movement is complex, with compressional, strike-slip, and extensional features observed around the damaged zone perimeter. Overall, block displacement and expansion are dominated by upslope thrusting. The northeas

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Mohammadi, Amirabbas, and David Airey. "Undrained response of Sydney sand under non-reversal cyclic loading." E3S Web of Conferences 92 (2019): 08005. http://dx.doi.org/10.1051/e3sconf/20199208005.

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Stress history and loading path can significantly influence the cyclic response of sands. It is well known that cyclic behaviour under non-symmetrical cycling is generally different from that under symmetrical loading around zero deviator stress. Anisotropic consolidation prior to cycling in triaxial apparatus changes the behaviour by exerting an initial static shear stress on critical planes. The present paper reports the results from a number of cyclic triaxial tests on anisotropically consolidated samples of Sydney beach sand. The samples are reconstituted in the laboratory and subjected to

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Burgin, Hugo B., Khalid Amrouch, Philippe Robion, and David Kulikowski. "An integrated approach to determining 4D stress development at Castle Cove." APPEA Journal 59, no. 1 (2019): 410. http://dx.doi.org/10.1071/aj18173.

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Models for basin evolution and natural fracture development often contain many uncertainties. Multiscale approaches to structural analysis assist in reducing these by providing checkpoints for structural evolution to better constrain the development of paleostress phases through time. In this study, we integrate the analysis of calcite twins, magnetic fabrics, stylolites and natural fractures at Castle Cove in the eastern Otway Basin, producing a five-phase model for stress evolution consisting of: phase 1 ~NW–SE Mid-Cretaceous strike-slip or compression; phases 2 and 3 Late Cretaceous extensi

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Fang, Xinding, Michael C. Fehler, and Arthur Cheng. "Simulation of the effect of stress-induced anisotropy on borehole compressional wave propagation." GEOPHYSICS 79, no. 4 (2014): D205—D216. http://dx.doi.org/10.1190/geo2013-0186.1.

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Formation elastic properties near a borehole may be altered from their original state due to the stress concentration around the borehole. This can lead to an incorrect estimation of formation elastic properties measured from sonic logs. Previous work has focused on estimating the elastic properties of the formation surrounding a borehole under anisotropic stress loading. We studied the effect of borehole stress concentration on sonic logging in a moderately consolidated Berea sandstone using a two-step approach. First, we used an iterative approach, which combines a rock-physics model and a f

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Chelbi, Mohamed Ben. "Geodynamic evolution of the Tunisian margin during the Albian–Cenomanian: structural evidence of the Austrian orogenic phase and the early tectonic inversion of the Tunisian Atlas." Journal of the Geological Society 178, no. 3 (2021): jgs2019–195. http://dx.doi.org/10.1144/jgs2019-195.

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The Zebbag and Fahdene formations outcrop onshore Tunisia and provide an excellent opportunity to test models of the tectonosedimentary evolution of this region during the Albian–Cenomanian. A NW–SE compressive stress regime resulted in shortening of the Tunisian margin and this compressional tectonism defines the Austrian phase described in the surrounding margins. This event is not widely documented, but regionally extensive tectonism is suggested by NE–SW thrusting and folding, which produced an angular unconformity, active halokinetic diapirs and transpressional NW–SE pull-apart basins. Th

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Mondy, Luke S., Patrice F. Rey, and Guillaume Duclaux. "The role of surface processes in basin inversion and breakup unconformity." Geology 51, no. 2 (2023): 220–24. http://dx.doi.org/10.1130/g050833.1.

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Abstract In the context of continental extension, transient compressional episodes (stress inversion) and phases of uplift (depth inversion) are commonly recorded with no corresponding change in plate motion. Changes in gravitational potential energy during the rifting process have been invoked as a possible source of compressional stresses, but their magnitude, timing, and relationship with depth inversions remain unclear. Using high-resolution two-dimensional numerical experiments of the full rifting process, we track the dynamic interplay between the far-field tectonic forces, loading and u

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McCann, Clive, and Jeremy Sothcott. "Sonic to ultrasonic Q of sandstones and limestones: Laboratory measurements at in situ pressures." GEOPHYSICS 74, no. 2 (2009): WA93—WA101. http://dx.doi.org/10.1190/1.3052112.

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Laboratory measurements of the attenuation and velocity dispersion of compressional and shear waves at appropriate frequencies, pressures, and temperatures can aid interpretation of seismic and well-log surveys as well as indicate absorption mechanisms in rocks. Construction and calibration of resonant-bar equipment was used to measure velocities and attenuations of standing shear and extensional waves in copper-jacketed right cylinders of rocks ([Formula: see text] in length, [Formula: see text] in diameter) in the sonic frequency range and at differential pressures up to [Formula: see text].

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Pothana, Prasad, Ghoulem Ifrene, and Kegang Ling. "Stress-Dependent Petrophysical Properties of the Bakken Unconventional Petroleum System: Insights from Elastic Wave Velocities and Permeability Measurements." Fuels 4, no. 4 (2023): 397–416. http://dx.doi.org/10.3390/fuels4040025.

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The net-effective stress is a fundamental physical property that undergoes dynamic changes in response to variations in pore pressure during production and injection activities. Petrophysical properties, including porosity, permeability, and wave velocities, play a critical role and exhibit strong dependence on the mechanical stress state of the formation. The Williston basin’s Bakken Formation represents a significant reservoir of hydrocarbons within the United States. To investigate this formation, we extracted core plugs from three distinct Bakken members, namely Upper Bakken, Middle Bakken

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Yu, Wang, Liu Bao-lin, Zhu Hai-yan, Yan Chuan-liang, Li Zhi-jun, and Wang Zhi-qiao. "Thermophysical and Mechanical Properties of Granite and Its Effects on Borehole Stability in High Temperature and Three-Dimensional Stress." Scientific World Journal 2014 (2014): 1–11. http://dx.doi.org/10.1155/2014/650683.

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When exploiting the deep resources, the surrounding rock readily undergoes the hole shrinkage, borehole collapse, and loss of circulation under high temperature and high pressure. A series of experiments were conducted to discuss the compressional wave velocity, triaxial strength, and permeability of granite cored from 3500 meters borehole under high temperature and three-dimensional stress. In light of the coupling of temperature, fluid, and stress, we get the thermo-fluid-solid model and governing equation. ANSYS-APDL was also used to stimulate the temperature influence on elastic modulus, P

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Chornkrathok, Sasithorn, Dongzhou Zhang, and Przemyslaw Dera. "Structure and Behavior of the Ni End-Member Schreibersite Ni3P under Compression to 50 GPa." Minerals 10, no. 4 (2020): 306. http://dx.doi.org/10.3390/min10040306.

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To better understand the potential presence of light element alloys of Fe and Ni in the Earth’s interior, the crystal structure and compressional behavior of the Ni-P binary compound, schreibersite (Ni3P), have been investigated using synchrotron X-ray diffraction experiments. Both powder and two single-crystal samples of synthetic Ni3P (in different orientations with respect to the loading axis of the diamond anvil cell) were compressed up to approximately 50 GPa at ambient temperature. The compressional data obtained for Ni3P were fitted with a 3rd order Birch–Murnaghan equation of state. Al

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Negussey, D., and M. S. Islam. "Uniqueness of steady state and liquefaction potential." Canadian Geotechnical Journal 31, no. 1 (1994): 132–39. http://dx.doi.org/10.1139/t94-015.

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A given sand is presumed to have a unique steady-state line. The proximity of an initial state to the steady-state line is considered to be a measure of liquefaction potential. This line of reasoning and application in practice is based on data obtained predominantly from triaxial tests in compression-mode loading. In such tests, relative orientations of bedding plane and principal stress directions remain fixed while stress states along actual failure surfaces may range from active to passive. This study examines the uniqueness of the steady state relative to the mode of loading, form of cons

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Lee, Jong-Sub, Geunwoo Park, Yong-Hoon Byun, and Changho Lee. "Modified Fixed Wall Oedometer When Considering Stress Dependence of Elastic Wave Velocities." Sensors 20, no. 21 (2020): 6291. http://dx.doi.org/10.3390/s20216291.

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A modified oedometer cell for measuring the applied stresses and elastic waves at the top and bottom of the specimen is developed to evaluate the effect of the side friction on the stress dependence of the elastic wave velocities. In the modified cell, two load cells are installed at the top and bottom plates, respectively. To generate and detect the compressional and shear waves, a pair of piezo disk elements and a pair of bender elements are mounted at both the top and bottom plates. Experimental results show that the stresses measured at the bottom are smaller than those measured at the top

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Swolfs, H. S., and W. Z. Savage. "Topographic modification of in situ stress in extensional and compressional tectonic environments." International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts 24, no. 3 (1987): 85. http://dx.doi.org/10.1016/0148-9062(87)90529-8.

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Boček, M. "High temperature tensile creep, creep damage and failure under superimposed compressional stress." Journal of Nuclear Materials 131, no. 2-3 (1985): 267–79. http://dx.doi.org/10.1016/0022-3115(85)90463-5.

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Chen, Kai, Martin Kunz, Yao Li, Eloisa Zepeda-Alarcon, Manuel Sintubin, and Hans-Rudolf Wenk. "Compressional residual stress in Bastogne boudins revealed by synchrotron X-ray microdiffraction." Geophysical Research Letters 43, no. 12 (2016): 6178–85. http://dx.doi.org/10.1002/2016gl069236.

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Wang, Buqing, Huan Li, Zhihao Sun, Wei Quan, Yuxuan Huang, and Mohamed Faisal. "Yingde–Guangning Granitic Plutons Record Complex Tectonic Evolution During Paleozoic-Mesozoic: Implications for Gold Exploration in Western Guangdong, South China." Minerals 14, no. 12 (2024): 1259. https://doi.org/10.3390/min14121259.

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Western Guangdong, a part of the South China Block, has a complex geological history characterized by significant magmatic, metamorphic, and tectonic activities. This dynamic geological past, particularly during the Mesozoic era, created favorable conditions for the formation of various mineral deposits, including Au, Ag, Cu, and Pb. This makes the region a key area for precious metal resources in China. Despite extensive metallogenic studies, detailed structural information for western Guangdong remains insufficient, highlighting the need for further investigation. Thus, effective delineation

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Davidson, John K. "Plate tectonic structural geology to detailed field and prospect stress prediction." APPEA Journal 48, no. 1 (2008): 153. http://dx.doi.org/10.1071/aj07010.

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Arguably the first successful application of the theory of continental drift to petroleum exploration was in 1959 by the pioneers S. W. Carey and L. G. Weeks whose collaboration led to the discovery of the world class Gippsland Basin. Plate tectonics, as the theory is now known, was still nascent and not prominent during peak global oil exploration success in the 1960s. As discovery rates continue to decline, large scale description of separating and colliding continents has become increasingly impotent in the ever more complex hunt for the next barrel. Emphasis is turning from new basins and

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