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Journal articles on the topic 'Static stress change'

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1

Hardebeck, Jeanne L. "The impact of static stress change, dynamic stress change, and the background stress on aftershock focal mechanisms." Journal of Geophysical Research: Solid Earth 119, no. 11 (2014): 8239–66. http://dx.doi.org/10.1002/2014jb011533.

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2

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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3

Santos, Leandra, Yan Campo, Douglas da Silva, Thiago Burgo, and Fernando Galembeck. "Rubber Surface Change and Static Charging under Periodic Stress." Colloids and Interfaces 2, no. 4 (2018): 55. http://dx.doi.org/10.3390/colloids2040055.

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Rubber materials play an important role in robotics, due to their sensing and actuating abilities, that are exploited in soft smart materials endowed with shape-adaptive and electroadhesive properties. The application of an electric field produces non-linear deformation that has been extensively modelled, but is not understood at the molecular level. The symmetric effect (the production of an electric field due to rubber deformation) was recently discovered and explained as follows: rubber surface chemical composition and adsorptive properties change during rubber deformation, allowing the sur
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4

Belmas, Ivan, Hanna Tantsura, Olena Bilous, Anhelina Shvachka, and Yuliana Gupalo. "Investigation of a static rope with a cable break." Strength of Materials and Theory of Structures, no. 108 (May 30, 2022): 349–59. http://dx.doi.org/10.32347/2410-2547.2022.108.349-359.

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Abstract. Establishing the influence of changes in the temporary properties of rubber on the stress state of the rubber traction body with a damaged cable. The method of research consists in the analytical solution of the model of the humorous traction body taking into account the rupture of the cable continuity and the change in the properties of the rubber. The dependences of the change of the stress state of the traction body of the humotross with the broken structure due to the rheology of the rubber shell are established. An algorithm for determining the stress state of a rubber traction
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5

Hardebeck, Jeanne L., and Ruth A. Harris. "Earthquakes in the Shadows: Why Aftershocks Occur at Surprising Locations." Seismic Record 2, no. 3 (2022): 207–16. http://dx.doi.org/10.1785/0320220023.

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Abstract For decades there has been a debate about the relative effects of dynamic versus static stress triggering of aftershocks. According to the static Coulomb stress change hypothesis, aftershocks should not occur in stress shadows—regions where static Coulomb stress has been reduced. We show that static stress shadows substantially influence aftershock occurrence following three M ≥ 7 California mainshocks. Within the modeled static Coulomb stress shadows, the aftershock rate is an order of magnitude lower than in the modeled increase regions. However, the earthquake rate in the stress sh
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6

Nostro, Concetta, Massimo Cocco, and Maria Elina Belardinelli. "Static stress changes in extensional regimes: An application to southern Apennines (Italy)." Bulletin of the Seismological Society of America 87, no. 1 (1997): 234–48. http://dx.doi.org/10.1785/bssa0870010234.

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Abstract The analysis of static stress changes due to co-seismic dislocations has been widely applied in recent years to study the variation in failure stress on well-known segmented seismogenic faults. These studies assert that earthquakes induce changes in static stress on neighboring faults that may delay, advance, or trigger impending earthquakes. So far, most of the investigations have focused on California strike-slip faults and, more recently, on thrust faults. In this work, we study the static stress changes in an extensional tectonic setting. Following Okada (1992), we calculate stati
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7

Caskey, S. J., and S. G. Wesnousky. "Static stress changes and earthquake triggering during the 1954 Fairview Peak and Dixie Valley earthquakes, central Nevada." Bulletin of the Seismological Society of America 87, no. 3 (1997): 521–27. http://dx.doi.org/10.1785/bssa0870030521.

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Abstract The 16 December 1954 Dixie Valley (MS 6.8) earthquake followed the Fairview Peak (MS 7.2) earthquake by only 4 min and 20 sec. A three-dimensional model of the two dip-slip fault systems based on recent detailed field studies shows the ruptures were separated by a 6-km step in surface trace. A boundary-element approach shows that the static stress changes imposed by rupture of the Fairview Peak earthquake are in the correct sense to explain the northward propagation of faulting along four distinct faults that comprise the Fairview Peak earthquake and the subsequent triggering of the D
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8

Li, Xian-Fang, and L. Roy Xu. "T-Stresses Across Static Crack Kinking." Journal of Applied Mechanics 74, no. 2 (2006): 181–90. http://dx.doi.org/10.1115/1.2188016.

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This paper is concerned with the T-stress change before and after crack kinking in two-dimensional elastic solids. By using asymptotic analysis and the Westergaard stress function method, approximate analytical formulas for calculating the T-stress as well as stress intensify factors of an infinitesimal kink are given. Contributions from the T-stress before crack kinking, to the T-stress and the stress intensity factors of the kinked crack, are clearly described. It is noted that since the sign of the T-stress of a kinked open crack might be different from that of a main crack, simply using th
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9

Liu, Yu, Rui Jing, and Peiyu Yan. "Effects of Mineral Admixtures on the Evolution of Static Yield Stress of Different Composite Pastes." Processes 11, no. 2 (2023): 614. http://dx.doi.org/10.3390/pr11020614.

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The effects of different mineral admixtures on the evolution of static yield stress of common composite cementitious material paste and ultra-high-performance concrete (UHPC)-based paste were investigated. The results show that there are obvious differences in the role of mineral admixtures in the common paste and the UHPC-based paste. Adding mineral admixtures can change the initial static yield stress of the paste by affecting the particle size, particle shape and the charged particles. The addition of mineral admixtures with small particle size such as silica fume and ultrafine slag can inc
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10

Li, Zhen. "Study on the Sealing Performance of O-ring under High-Pressure Environment." Journal of Physics: Conference Series 2419, no. 1 (2023): 012005. http://dx.doi.org/10.1088/1742-6596/2419/1/012005.

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Abstract The sealing properties of the O-ring of the hydraulic cylinder plunger rod under a high-pressure environment are related to a variety of factors. In this paper, we first establish a simulation model based on an O-ring reciprocating shaft seal under a high pressure-environment through finite element software and study the influence of the compression rate, static pressure, and reciprocating speed of the plunger rod on the sealing performance of O-ring through the simulation model, and then analyze the maximum stress of O-ring during installation, hydrostatic loading and reciprocating m
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11

Jiménez-Donaire, María del Pilar, Juan Vicente Giráldez, and Tom Vanwalleghem. "Impact of Climate Change on Agricultural Droughts in Spain." Water 12, no. 11 (2020): 3214. http://dx.doi.org/10.3390/w12113214.

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Drought is an important natural hazard that is expected to increase in frequency and intensity as a consequence of climate change. This study aimed to evaluate the impact of future changes in the temperature and precipitation regime of Spain on agricultural droughts, using novel static and dynamic drought indices. Statistically downscaled climate change scenarios from the model HadGEM2-CC, under the scenario representative concentration pathway 8.5 (RCP8.5), were used at a total of 374 sites for the period 2006 to 2100. The evolution of static and dynamic drought stress indices over time show
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12

Parsons, Tom, Yosihiko Ogata, Jiancang Zhuang, and Eric L. Geist. "Evaluation of static stress change forecasting with prospective and blind tests." Geophysical Journal International 188, no. 3 (2012): 1425–40. http://dx.doi.org/10.1111/j.1365-246x.2011.05343.x.

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13

Sun, You Wei, Ni Men, Jing Shan Bo, Ping Li, and Xiao Guang Cai. "Analysis of Tunnel Rock’s Dynamic Stress with Input of Different Peak Ground Motions." Advanced Materials Research 378-379 (October 2011): 218–21. http://dx.doi.org/10.4028/www.scientific.net/amr.378-379.218.

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The changes of tunnel rock stress caused by dynamic load is a hot point in geotechnical engineering. The paper introduces seismic methods of seismic design codes in China. The paper select state road 318(Huangcaoping part)as an example. Using finite difference software to analyze the rock pressure changes around the lining-tunnel with different seismic inputs. Comparing the results the rock static pressure and find the relative amplification factor between dynamic pressure and static pressure. Based on the results of analysis, we can obtain the following conclusions: As the peak ground motion
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14

Liu, Lei, Xiang Meng, Hao Qin, and Zhaozhao Chang. "Experimental Research on the Influence of Temperature on the Static Properties of Skarn." Advances in Civil Engineering 2021 (April 8, 2021): 1–13. http://dx.doi.org/10.1155/2021/6636775.

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Studying the high-temperature mechanical properties of rocks is of great significance to engineering disasters caused by deep rock mining and underground protection projects. In view of insufficient research on the high-temperature mechanical properties of deep rocks in southwestern China, we used high-temperature heating devices and statics equipment to conduct static tests on Skarn. XW7L-12 box-type resistance furnace was adopted to heat Skarn (25°C, 200°C, 400°C, 600°C, and 800°C), and the temperature effect of its basic physical parameters (density and wave velocity) was measured and analy
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15

Wang, Gen Li, Zheng Mao Ye, and Bin Wu. "The Change of Stress on Marine Concrete Covered with Barnacles." Applied Mechanics and Materials 584-586 (July 2014): 1031–34. http://dx.doi.org/10.4028/www.scientific.net/amm.584-586.1031.

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Barnacle is a major creature in marine fouling organisms, it increases static load and dynamic load of marine structures. In this paper, the change of stress on marine concrete surface covered with barnacles is studied. Moreover, a simplified model is established. The result shows that the stress of seawater increases by 0.53 times on the concrete surface, which is covered with barnacles.
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16

Mignan, A. "Static behaviour of induced seismicity." Nonlinear Processes in Geophysics Discussions 2, no. 6 (2015): 1659–74. http://dx.doi.org/10.5194/npgd-2-1659-2015.

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Abstract. The standard paradigm to describe seismicity induced by fluid injection is to apply nonlinear diffusion dynamics in a poroelastic medium. I show that the spatiotemporal behaviour and rate evolution of induced seismicity can, instead, be expressed by geometric operations on a static stress field produced by volume change at depth. I obtain laws similar in form to the ones derived from poroelasticity while requiring a lower description length. Although fluid flow is known to occur in the ground, it is not pertinent to the behaviour of induced seismicity. The proposed model is equivalen
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17

Bathija, Arpita Pal, Michael Lee Batzle, and Manika Prasad. "An experimental study of the dilation factor." GEOPHYSICS 74, no. 4 (2009): E181—E191. http://dx.doi.org/10.1190/1.3137060.

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Dilation factor [Formula: see text] is the ratio of relative change in velocity to relative change in deformation (strain). It has significant implications for 4D seismic studies where it can be used to infer reservoir or overburden thickness changes from seismic changes, but the effect of stress on [Formula: see text] and its components is not well understood. We conduct static strain and ultrasonic velocity measurements to study the effect of stress on [Formula: see text] and its components. Measured absolute [Formula: see text] values (6–91 in sandstones and 6–11 in shale) depend on the def
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18

TONE, Shigeyasu, Takashi MIYATAKE, Kazuhito HIKIMA, and Aitaro KATO. "Change of Static Stress Fields from Earthquake Rupture in Heterogeneous Crustal Structure." Zisin (Journal of the Seismological Society of Japan. 2nd ser.) 62, no. 2/3 (2009): 97–107. http://dx.doi.org/10.4294/zisin.62.97.

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19

Mignan, Arnaud. "Static behaviour of induced seismicity." Nonlinear Processes in Geophysics 23, no. 2 (2016): 107–13. http://dx.doi.org/10.5194/npg-23-107-2016.

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Abstract. The standard paradigm to describe seismicity induced by fluid injection is to apply non-linear diffusion dynamics in a poroelastic medium. I show that the spatio-temporal behaviour and rate evolution of induced seismicity can, instead, be expressed by geometric operations on a static stress field produced by volume change at depth. I obtain laws similar in form to the ones derived from poroelasticity while requiring a lower description length. Although fluid flow is known to occur in the ground, it is not pertinent to the geometrical description of the spatio-temporal patterns of ind
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20

Fujita, Eisuke, Tomofumi Kozono, Norio Toda, Aiko Kikuchi, and Yoshiaki Ida. "Quasi-Static Stress Change Around Mount Fuji Region Due to Tohoku Mega-Thrust Earthquake." Journal of Disaster Research 9, no. 3 (2014): 365–72. http://dx.doi.org/10.20965/jdr.2014.p0365.

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The 2011 Tohoku mega-thrust earthquake caused huge crustal deformation over a wide are of Mainland Japan. Many mega-thrust earthquakes worldwide have triggered volcanic eruptions nearby, and it is assumed that stress changes due to the Tohoku earthquake resulted in a perturbation to the magma system. The objectives of our study is to evaluate this perturbation quantitatively and to analyze the mechanism of the interaction between mega-thrust earthquakes and volcanic eruptions. This paper focuses on quasi-static stress change due to viscous relaxation of a source region and the surrounding area
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21

Nalbant, Suleyman S., Sandy Steacy, and John McCloskey. "Stress transfer relations among the earthquakes that occurred in Kerman province, southern Iran since 1981." Geophysical Journal International 167, no. 1 (2006): 309–18. http://dx.doi.org/10.1111/j.1365-246x.2006.03119.x.

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Summary We explore the possible stress triggering relationship of the M≥ 6.4 earthquakes that occurred in Kerman Province, southern Iran since 1981. We calculated stress changes due to both coseismic sudden movement in the upper crust and the time-dependent viscous relaxation of the lower crust and/or upper mantle following the event. Four events of M≥ 6.4 occurred between 1981 and 2005, on and close to the Gowk fault, show a clear Coulomb stress load to failure relationship. The 2003 M= 6.5 Bam earthquake, however, which occurred approximately 95 km SW of the closest Gowk event, shows a very
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22

Segou, Margarita, and Tom Parsons. "A New Technique to Calculate Earthquake Stress Transfer and to Probe the Physics of Aftershocks." Bulletin of the Seismological Society of America 110, no. 2 (2020): 863–73. http://dx.doi.org/10.1785/0120190033.

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ABSTRACT Coseismic stress changes have been the primary physical principle used to explain aftershocks and triggered earthquakes. However, this method does not adequately forecast earthquake rates and diverse rupture populations when subjected to formal testing. We show that earthquake forecasts can be impaired by assumptions made in physics-based models such as the existence of hypothetical optimal faults and regional scale invariability of the stress field. We compare calculations made under these assumptions along with different realizations of a new conceptual triggering model that feature
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23

Ohya, Shin'ichi, and Shozaburo Ohta. "Time-Resolved X-ray Stress Measurement During Cyclic Loading." Advances in X-ray Analysis 33 (1989): 335–40. http://dx.doi.org/10.1154/s0376030800019741.

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X-ray stress analysis is widely used in the measurement of residual stress or stress under static loading. If it is possible to measure actual stress at any applied stress level during cyclic loading by using x-rays, it will be of much help in investigating dynamical fatigue behavior such as crack closure and change of residual stress distribution.
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24

Yunshan, Han, Wu Han, Dong Yanli, and Wang Yuanlong. "Evaluation of Overall Stability for Garage Foundation Excavation of High Buildings." Open Civil Engineering Journal 9, no. 1 (2015): 757–62. http://dx.doi.org/10.2174/1874149501509010757.

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In current projects, many garages were built after the main structure finished. However, the excavation of garage foundation not only changed the bearing capacity modification by depth, but also makes the soil pressure along the two sides become different. And thus the stress condition of the main building foundations is changed. The change of stress condition affects the stability of main structure directly. Based on the stress condition of high buildings foundation after one side excavation, the change of settlement under the eccentric action was studied. The change of settlement makes the t
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25

Xiao, Yang, Shengyu Hou, Shuling Dai, Xinfeng Xu, and Jie Zhang. "Dynamic Simulation and Analysis of Engagement Process for Logarithmic Spiral Bevel Gear Based on Accurate 3D Model." Journal of Physics: Conference Series 2179, no. 1 (2022): 012001. http://dx.doi.org/10.1088/1742-6596/2179/1/012001.

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Abstract Based on the accurate 3D model of logarithmic spiral bevel gear, the operation of spiral cone gear engagement is analyzed and simulated by ANSYS. Through the nonlinear static contact analysis of different positions, the stress change rule and the maximum contact stress is obtained. Compared with the theoretical contact stress strength rule, this paper also analyzes the dynamic operation situation of the gear pairs, obtains the dynamic contact situation rule at different engagement times and different rotating speeds, the influence of the rotating speed on the gear contact characterist
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26

Westerberg, Kristina, and Susanne Tafvelin. "Changes in commitment to change among leaders in home help services." Leadership in Health Services 28, no. 3 (2015): 216–27. http://dx.doi.org/10.1108/lhs-04-2014-0038.

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Purpose – The purpose of the this study was to explore the development of commitment to change among leaders in the home help services during organizational change and to study this development in relation to workload and stress. During organizational change initiatives, commitment to change among leaders is important to ensure the implementation of the change. However, little is known of development of commitment of change over time. Design/methodology/approach – The study used a qualitative design with semi-structured interviews with ten leaders by the time an organizational change initiativ
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27

Hardebeck, Jeanne L., Julie J. Nazareth, and Egill Hauksson. "The static stress change triggering model: Constraints from two southern California aftershock sequences." Journal of Geophysical Research: Solid Earth 103, B10 (1998): 24427–37. http://dx.doi.org/10.1029/98jb00573.

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28

SHI, Yao-Lin, and Jian-Ling CAO. "Some Aspects of Static Stress Change Calculation-Case Study on the Wenchuan Earthquake." Chinese Journal of Geophysics 53, no. 1 (2010): 64–73. http://dx.doi.org/10.1002/cjg2.1473.

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29

Utkucu, Murat, and Hatice Durmuş. "Usefulness of Coulomb Static Stress Changes in Earthquake Hazard Studies: An Example from the Lake Van Area, Eastern Turkey." Academic Perspective Procedia 4, no. 2 (2021): 33–41. http://dx.doi.org/10.33793/acperpro.04.02.23.

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It has been globally documented over different tectonic environments that Coulomb static stress changes caused by a mainshock can promote or demote stresses along the neighboring faults and thus triggers or delays following seismicity. In the present study Coulomb stress changes of the earthquakes in the Lake Van area are calculated using available data and the likely source faults. The calculated stress change maps demonstrate that the large earthquakes in the Lake Area are mostly stressed by the preceding earthquakes, suggesting earthquake rupture interactions. It is further suggested that C
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30

Kwaśniewski, Janusz, Ireneusz Dominik, Krzysztof Lalik, and Rafał Szymański. "Harmonic Analysis of Self-Excited Acoustical System for Stress Changes Measurement in Compressed Steel Structural Section." Solid State Phenomena 198 (March 2013): 639–44. http://dx.doi.org/10.4028/www.scientific.net/ssp.198.639.

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This paper presents the application of the Self-exited Acoustical System (SAS) for monitoring stress changes in steel. The change of the speed of wave propagation, which is associated with the change of the resonance frequency in the system is caused by the deformation of the examined material. The SAS system is based on this phenomenon and can be used for an indirectly measurement of the stresses changes in the steel. Preliminary calculations such as static analysis and dynamic simulation of the system were carried out. The results of calculations were compared with the experimental data of t
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31

Nguyen, Van Hieu, Van Thuy Do, Xuan Bang Nguyen, and Duc Tiep Pham. "Correlation between Static and Dynamic Elastic Modulus of Soil by Triaxial Tests in Various Effective Consolidation Stresses." Engineering, Technology & Applied Science Research 15, no. 3 (2025): 22762–69. https://doi.org/10.48084/etasr.10466.

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This paper presents the behavior of gravelly soil specimens subjected to static and dynamic loading under undrained conditions, as investigated through laboratory triaxial tests. The experiments were performed on gravelly soil specimens with a relative compaction of 0.98 when the effective consolidation stress was varied with three different levels: 100 kPa, 150 kPa, and 180 kPa. The experimental results show that under the effect of static load and dynamic load in the undrained triaxial test, excess pore water pressure is formed during the loading process. After a period of applied load, the
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32

Ding, Ming Bo, and Xing Chong Chen. "Model Test Research on the Pile Stress by Pseudo-Static Test of Pier-Foundation-Structure System." Advanced Materials Research 383-390 (November 2011): 6641–45. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.6641.

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This paper mostly studied on the pile stress in the loess foundation when the pile and the soil are interacting by pseudo-static test of piers and piles in the remolded loess foundation indoor. We get the stress-depth curve of pile body. We get its finite element model by ANASYS and analyze the change of pile body stress.
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33

Yan, Fuyong, De-Hua Han, and Xue-Lian Chen. "Simultaneous static and dynamic bulk modulus measurements under hydrostatic stress conditions and without applying strain gauge." GEOPHYSICS 85, no. 4 (2020): MR191—MR199. http://dx.doi.org/10.1190/geo2019-0390.1.

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The static properties of subsurface rocks are needed for geomechanical applications, but the dynamic properties are usually more extensively available and can be acquired with much less effort. Therefore, it is important to know the relationships between the static and dynamic properties. Studying these relationships based on traditional triaxial testing yields confusing results, partly due to intrinsic deficiencies of the experimental setup and testing procedures. We have developed a new approach to study the relationship under hydrostatic stress conditions. The traditional ultrasonic velocit
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34

Lou, Jia Jia, Xue Mei Cao, and Ji Song Jiao. "Tooth Surface Contact Stress Analysis of the Straight Bevel Gear Axial Practice." Applied Mechanics and Materials 401-403 (September 2013): 345–49. http://dx.doi.org/10.4028/www.scientific.net/amm.401-403.345.

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The program of tooth surface and gear inside grid nodes is developed according to the tooth surface equation. Finite Element Analysis of the straight bevel gear axial practice model is established. Order flow contact models of the three teeth and contact pair of gears of the three teeth is developed by APDL language of ANSYS. The static contact stress analysis of axial practice is constructed. The static contact stress of tooth surface distribution and change rule is obtained by calculating. The result shows that axial practice pair of gears of have good meshing performance.
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35

Yamamoto, Ei, Wataru Iwanaga, Hiroshi Miyazaki, and Kozaburo Hayashi. "Effects of Static Stress on the Mechanical Properties of Cultured Collagen Fascicles From the Rabbit Patellar Tendon." Journal of Biomechanical Engineering 124, no. 1 (2001): 85–93. http://dx.doi.org/10.1115/1.1427924.

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In-vitro tissue culture experiments were performed to study the effects of static stress on the mechanical properties of collagen fascicles obtained from the rabbit patellar tendon. After collagen fascicles having the diameter of approximately 300 μm were cultured for 1 and 2 wk under static stress between 0 and 3 MPa, their mechanical properties and crimp morphology were determined using a micro-tensile tester and a light microscope, respectively. The tensile strength and tangent modulus of the fascicles were significantly decreased by culture under no load compared to control fascicles. A st
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36

Mashoene, Mmakganya, and Mishelle Doorasamy. "Forecasting the South African Real Spot-rate Curve During Covid-19 Stress." Journal of Accounting and Finance in Emerging Economies 9, no. 3 (2023): 313–28. http://dx.doi.org/10.26710/jafee.v9i3.2753.

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Purpose: The aim of this study is to investigate the performance of forecasting the South African real spot rate curve using different mathematical term-structure models during the Covid-19 period. This study follows previous studies by Reid (2009) and Mashoene et al., 2021) where dynamic term-structure models performed well compared to static term-structure models over normal market conditions. For high volatility, normality often breaks, which might result in a need for recalibration in the currently used methodology or a total change in the methodology.
 Methodology: This study explore
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37

Yuan, Si Cong, Xin Guo, Xiao Yu Wang, and Xi Yong Pei. "Finite Element Analysis Based on ANSYS of Bolt of Roof Bolter." Advanced Materials Research 926-930 (May 2014): 3042–45. http://dx.doi.org/10.4028/www.scientific.net/amr.926-930.3042.

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The three-dimensional solid models of five different length and shaft diameter anchor of bolt were constructed based on ANSYS software, and making static analysis and modal analysis on it to obtain the stress nephogram and natural frequency of bolt. Research on the stress condition of bolt in static analysis. In modal analysis, researching on the effect regular of the change of length and shaft diameter size on the bolt transverse vibration, the longitudinal and torsional vibration of three natural modes of different frequency, providing a reference for the structure design and reasonable choi
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38

Bonali, F. L. "Earthquake-induced static stress change on magma pathway in promoting the 2012 Copahue eruption." Tectonophysics 608 (November 2013): 127–37. http://dx.doi.org/10.1016/j.tecto.2013.10.006.

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39

Zhou, Shenghao, and Shuogui Wang. "Study on the influence of layout angle on static stiffness and longitudinal grip of tread blocks." Journal of Physics: Conference Series 2419, no. 1 (2023): 012037. http://dx.doi.org/10.1088/1742-6596/2419/1/012037.

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Abstract The static stiffness and longitudinal grip of the tread block are important parameters of the tire, affecting the performance of the tire, such as braking, steering, noise, and side slip properties. In order to study the influence of the layout angle of the tread block on the static stiffness and longitudinal grip of the tread block, a theoretical model of the change of the static stiffness of the tread block with the layout angle is introduced, which is considered the effect of the compression on the deformation under sliding conditions. A finite element model of the static stiffness
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40

Wu, Qing, Ya Chen Zhang, Xue Jun Liu, and Bao An Han. "Numerical Simulation of Fluid Flow in a New High Efficient Mixer." Applied Mechanics and Materials 251 (December 2012): 226–30. http://dx.doi.org/10.4028/www.scientific.net/amm.251.226.

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In order to determine proper structural parameters of the new high efficient mixer created by the author, the CFD software is applied to simulate numerically three dimensional incompressible turbulent fields for three static mixing units and the mixing unit with rotating impellor. The static mixing units include three kinds of spiral blades that are single-blade style, three-blade style and four-blade style. Geometric models are built by Pro/ENGINEER and exported to Fluent. The time-mean Reynolds equations and standard turbulent model are applied, and the post-processing software is used to an
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Habtay Gebremicheal, Gedion, Jin Chen, Muhammed Farooq Zaman, and Xiao Ping Pang. "Design and Finite Element Analysis of a Hydraulic Excavator Boom." Advanced Materials Research 538-541 (June 2012): 568–71. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.568.

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In today’s world of growing competition, all industries are trying their best to give the components of high quality with minimum expenditure. So in present work a new semi-elliptical boom has been selected to replace the conventional boom, which is usually made of rectangular. In particular, the study wants to substitute the rectangular section for Semi-elliptical section. This change lightens the weight of the boom. For this purpose, boom with semi-elliptical cross-section has been modeled using cad software pro/E wildfire 4.0. Using VB program automatic calculation module (UPAS), the static
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Xu, Fenqiang, Yunlong Yao, Qinghui Li, Zhiwei Shao, and Guisen Wang. "Enhancing static load test of pipe pile composite foundation with innovative elastic cushioning technology." Vibroengineering Procedia 51 (October 20, 2023): 128–33. http://dx.doi.org/10.21595/vp.2023.23576.

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Pipe piles have been widely used in composite foundation treatment by virtue of the advantages of assembly line production, easy control of pile quality, fast construction, high bearing capacity of single pile and green environmental protection. By introducing elastic cushion in the static load test method of pipe pile composite foundation, and using theoretical analysis and field test to study the change rule of settlement, pile-soil stress ratio and pile top stress of pipe pile composite foundation with different cushion stiffness. It is concluded that it is feasible to replace the sand cush
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Ma, Shu, Guiming Li, Yongjiang Zhang, and Hao Liu. "Propagation behavior of coal crack induced by liquid CO2 phase change blasting considering blasting pressure effects." PLOS ONE 19, no. 11 (2024): e0313360. http://dx.doi.org/10.1371/journal.pone.0313360.

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To investigate the crack propagation mechanisms in low-permeability coal seams induced by liquid CO2 phase change blasting under different blasting pressures, this research presents an experimental study conducted on a small liquid CO2 phase change blasting test system. The failure mode, crack morphology, and distribution characteristics of the coal rock model specimens under different liquid CO2 phase change blasting pressure were revealed, analyzing the crack shapes and expansion process. The results show that with increasing blasting pressure, both the number and complexity of cracks signif
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Qiu, Zhi Dong, and De Min Wei. "The Effects of the No-Load Factors on Static Response of the Gravity Dam." Advanced Materials Research 163-167 (December 2010): 1582–85. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.1582.

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By using finite element method, analysis the static response of internal force and displacement of gravity dam under water and no-load factors. The change of the stiffness ratio and the difference of dam and foundation stiffness at the dam heel and toe are considered. The stress in the key parts of the dam and the maximal displacement on the dam top are obtained. It is found that the change of foundation stiffness affects the stress of the dam, and the displacement decreases with the increasing of the foundation stiffness. Some computational results and conclusions are the theoretical basis fo
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Kren, A. P., M. N. Delendik, O. V. Matsulevich, O. K. Gusev, K. U. Pantsialeyeu, and R. I. Vorobey. "X-ray Diffraction Method in the Study of a Metal Surface Stress State Under Static and Impact Deformation." Devices and Methods of Measurements 14, no. 2 (2023): 115–25. http://dx.doi.org/10.21122/2220-9506-2023-14-2-115-125.

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Study of the stress field in a plastic imprint and around it is of great practical importance. Processes similar to indentation are used in shot blasting to harden the surface of materials and generate compressive stresses in the surface layers. The purpose of this work was to study the change in the stress-strain state in the area of the plastic imprint with increasing load, in the transition from small to large deformations, as well as to study the change in stress at different strain rates.X-ray diffraction method was used to study the field of residual stresses generated on the surface of
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Zhang, Tie Shan, and Qun Feng Ma. "Study on the Strength Design of Cold Deformation Strengthening Material." Applied Mechanics and Materials 325-326 (June 2013): 63–66. http://dx.doi.org/10.4028/www.scientific.net/amm.325-326.63.

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Study on Strength design of steel components including residual stress. First, sample with residual stress of shot peening were detected, material properties change with residual stress was analyzed. And problems in the strength design were discussed. On this basis, design criteria for design of static strength and fatigue strength under plane stress state were derivated, the design criteria formula of the unification form is obtained. Finally, examples illustrate the reasonableness of the conclusions and deriving formulas.
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Risitano, Antonino, Carmelo Clienti, and Giacomo Risitano. "Determination of Fatigue Limit by Mono-Axial Tensile Specimens Using Thermal Analysis." Key Engineering Materials 452-453 (November 2010): 361–64. http://dx.doi.org/10.4028/www.scientific.net/kem.452-453.361.

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In this work is indicated how it could be possible to evaluate the limit stress of the thermo-elastic phase of deformation by thermo-analysing the surface of the specimen during a static traction test. Adding the temperature curve measured on a small area of the surface (the hottest) to the classic stress-strain curve, it is possible to evaluate a limit temperature T0 coincident with the beginning of the non linear trend of the curve. The corresponding stress value is coincident with the fatigue limit of the analyzed component. As an example, the results of traction tests performed on two notc
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Nauman, E. A., R. L. Satcher, T. M. Keaveny, B. P. Halloran, and D. D. Bikle. "Osteoblasts respond to pulsatile fluid flow with short-term increases in PGE2 but no change in mineralization." Journal of Applied Physiology 90, no. 5 (2001): 1849–54. http://dx.doi.org/10.1152/jappl.2001.90.5.1849.

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Although there is no consensus as to the precise nature of the mechanostimulatory signals imparted to the bone cells during remodeling, it has been postulated that deformation-induced fluid flow plays a role in the mechanotransduction pathway. In vitro, osteoblasts respond to fluid shear stress with an increase in PGE2production; however, the long-term effects of fluid shear stress on cell proliferation and differentiation have not been examined. The goal of this study was to apply continuous pulsatile fluid shear stresses to osteoblasts and determine whether the initial production of PGE2 is
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Li, Siqi, Shenglei Tian, Wei Li, Xin Ling, Marcin Kapitaniak, and Vahid Vaziri. "Numerical Study on the Elastic Deformation and the Stress Field of Brittle Rocks under Harmonic Dynamic Load." Energies 13, no. 4 (2020): 851. http://dx.doi.org/10.3390/en13040851.

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In order to study the deformation displacement and the stress field of brittle rocks under harmonic dynamic loading, a series of systematic numerical simulations are conducted in this paper. A 3D uniaxial compression simulation is carried out to calibrate and determine the property parameters of sandstone and a model of the cylindrical indenter intruding the rock is proposed to analyze the process of elastic deformation. Four main parameters are taken into account, namely the position on the rock, the frequency and the amplitude of dynamic load, the type of indenter and the loading conditions
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Wang, Han-Lin, Ren-Peng Chen, Wei Cheng, Shuai Qi, and Yu-Jun Cui. "Full-scale model study on variations of soil stress in geosynthetic-reinforced pile-supported track bed with water level change and cyclic loading." Canadian Geotechnical Journal 56, no. 1 (2019): 60–68. http://dx.doi.org/10.1139/cgj-2017-0689.

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This study presents a full-scale model investigation on variations of soil stress in a geosynthetic-reinforced pile-supported track bed at various water levels and loading cycles, with four testing procedures: water level rising, cyclic loading at high water level, water level lowering, and cyclic loading at low water level. The soil arching effect was revealed, characterized by higher stress above the pile cap. With the water level rising and loading cycles increasing at high water level, this effect becomes more pronounced, until a peak value of dynamic stress concentration ratio is reached.
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