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Journal articles on the topic 'Loading modeling'

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1

Liang, Xinya. "Prior Sensitivity in Bayesian Structural Equation Modeling for Sparse Factor Loading Structures." Educational and Psychological Measurement 80, no. 6 (2020): 1025–58. http://dx.doi.org/10.1177/0013164420906449.

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Bayesian structural equation modeling (BSEM) is a flexible tool for the exploration and estimation of sparse factor loading structures; that is, most cross-loading entries are zero and only a few important cross-loadings are nonzero. The current investigation was focused on the BSEM with small-variance normal distribution priors (BSEM-N) for both variable selection and model estimation. The prior sensitivity in BSEM-N was explored in factor analysis models with sparse loading structures through a simulation study (Study 1) and an empirical example (Study 2). Study 1 examined the prior sensitiv
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2

Meng, Meng, Stefan Z. Miska, Mengjiao Yu, and Evren M. Ozbayoglu. "Fully Coupled Modeling of Dynamic Loading of the Wellbore." SPE Journal 25, no. 03 (2019): 1462–88. http://dx.doi.org/10.2118/198914-pa.

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Summary Loadings acting on a wellbore are more realistically regarded as dynamic rather than static, and the wellbore response under dynamic loading can be different from that under static loading. Under dynamic loading, the inertia term should be considered and the changing rate of loading could induce a change in the mechanical properties of the wellbore, which might compromise wellbore stability and integrity. In this paper, a fully coupled poroelastodynamic model is proposed to study wellbore behavior. This model not only considers fully coupled deformation/diffusion effects, but also incl
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3

Solari, Giovanni. "Turbulence Modeling for Gust Loading." Journal of Structural Engineering 113, no. 7 (1987): 1550–69. http://dx.doi.org/10.1061/(asce)0733-9445(1987)113:7(1550).

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4

Zhang, Cheng, and Lin Xiang Wang. "Modeling the Loading-Rate Dependency of the Hysteretic Dynamics of Magnetorheological Dampers." Applied Mechanics and Materials 55-57 (May 2011): 807–12. http://dx.doi.org/10.4028/www.scientific.net/amm.55-57.807.

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The loading rate dependency of the hysteretic dynamics of Magnetorheological (MR) dampers is investigated in the current paper. The model is constructed on the basis of a phenomenological phase-transition theory. The hysteretic dynamics is treated as the responses of a nonlinear system upon external loadings. With appropriately chosen coefficients, the proposed model is able to capture the loading-rate dependency feature of the hysteretic dynamics. Comparisons between the numerical and experimental results are presented, and perfect agreements are obtained.
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Aoshima, Koji, Arvid Fälldin, Eddie Wadbro, and Martin Servin. "World Modeling for Autonomous Wheel Loaders." Automation 5, no. 3 (2024): 259–81. http://dx.doi.org/10.3390/automation5030016.

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This paper presents a method for learning world models for wheel loaders performing automatic loading actions on a pile of soil. Data-driven models were learned to output the resulting pile state, loaded mass, time, and work for a single loading cycle given inputs that include a heightmap of the initial pile shape and action parameters for an automatic bucket-filling controller. Long-horizon planning of sequential loading in a dynamically changing environment is thus enabled as repeated model inference. The models, consisting of deep neural networks, were trained on data from a 3D multibody dy
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6

Khaydarov, T. A., B. B. Utepov, N. Q. Rajabov, O. A. Kulmamatov, M. Sh Кholiyarov, and S. T. Akhmetova. "Modeling of loading and unloading processes." Journal of Physics: Conference Series 2176, no. 1 (2022): 012088. http://dx.doi.org/10.1088/1742-6596/2176/1/012088.

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Abstract The article theoretically examines the choice of the most optimal of the possible trajectories of cargo in the process of moving goods from one place to another, placing them in the most optimal shape and size, taking into account the characteristics of the cargo. At the same time, using the method of mathematical modeling, the position of objects in space was determined using the functions of the Cartesian and polar coordinate systems. For optimal planning and management of the placement of goods, as well as transport operations along any spatial trajectory, the matrix method of math
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7

Savchenko, Iurii, Alexander Shapoval, Viktoriya Kozechko, Volodymyr Voskoboynik, Oksana Khrebtova, and Sergii Shlyk. "MECHANICAL LOADING SYSTEMS SAFETY PROCESSES MODELING." IOP Conference Series: Materials Science and Engineering 1164, no. 1 (2021): 012070. http://dx.doi.org/10.1088/1757-899x/1164/1/012070.

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8

Yatsun, S. F., V. M. Antipov, and A. E. Karlov. "MODELING OF LOADING BY INDUSTRIAL EXOSKELET." Proceedings of the Southwest State University 22, no. 6 (2019): 14–20. http://dx.doi.org/10.21869/2223-1560-2018-22-6-14-20.

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The article deals with the task of lifting a weight by a person using an exoskeleton. It is proposed to consider lifting in the form of three successive stages. A mathematical model of the exoskeleton, describing movement in various modes of movement, has been developed. The inverse task of kinematics was solved, which allows finding the rotation angles of the exoskeleton links at the preparatory stage. The method for determining the driving moments at the stages of lifting the load is proposed.
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9

Socie, DF, and MA Pompetzki. "Modeling Variability in Service Loading Spectra." Journal of ASTM International 1, no. 2 (2004): 11561. http://dx.doi.org/10.1520/jai11561.

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10

Chen, Danian, S. T. S. Al-Hassani, Zhihua Yin, and Yuying Yu. "Modeling shock loading behavior of concrete." International Journal of Solids and Structures 38, no. 48-49 (2001): 8787–803. http://dx.doi.org/10.1016/s0020-7683(01)00102-0.

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11

van Dam, T. M., and J. Wahr. "Modeling environment loading effects: a review." Physics and Chemistry of the Earth 23, no. 9-10 (1998): 1077–87. http://dx.doi.org/10.1016/s0079-1946(98)00147-5.

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12

Lagerev, Igor A. "Simulation of a bridge crane metal construction loading parameters." Vestnik Bryanskogo gosudarstvennogo tekhnicheskogo universiteta, no. 2 (June 30, 2010): 74–81. https://doi.org/10.5281/zenodo.1301296.

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The article proposes a method of modeling the loading factors of metal structures of General purpose bridge crane based on network simulation models, based on a reliable account of the conditions of its operation and features of the production process. The application of the method in the performance of numerical modeling of the loading of metal structures of bridge crane serving the production of reinforced concrete farms is shown.
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13

Myalenko, V. I. "Modeling of Tribological Processes for Abrasive Wear of Soil-Cutting Part." Agricultural Machinery and Technologies 17, no. 2 (2023): 69–75. http://dx.doi.org/10.22314/2073-7599-2023-17-2-69-75.

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Abstract. It is shown that simulation modeling of physical processes makes it possible to study the interaction of soil-cutting parts with soil during the observation period of 2-6 hours, when it is required to compress the time scale for creating a new design. (Research purpose) To develop models of the tribological process for abrasive wear of soil-cutting parts based on the combination of simulated loading of friction surfaces with the parameters of the real soil force equivalents. (Materials and methods) This study is based on the simulated loading method and the method of comparing the fo
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14

Bezverkhy, O., L. Zinchuk, and V. Karlash. "Modeling of the piezoceramic resonator electric loading conditions based on experimental data." Mathematical Modeling and Computing 2, no. 2 (2015): 115–27. http://dx.doi.org/10.23939/mmc2015.02.115.

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15

Papió, C., and L. Trabaud. "Comparative Study of the Aerial Structure of Five Shrubs of Mediterranean Shrublands." Forest Science 37, no. 1 (1991): 146–59. http://dx.doi.org/10.1093/forestscience/37.1.146.

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Abstract Each year hundreds of thousands of hectares of forests and shrublands are destroyed by wildfires in countries of the western part of the Mediterranean Basin (France, Italy, Spain). Structural canopy components influencing flammability and fire behavior were studied for five Mediterranean shrub species. For each species, total fuel loading, available fuel loading, and vertical distribution of different fuel particles [leaves, twigs of different diameter classes (alive or dead) and stratas] were estimated in a 30-yr-old shrubland. Live to dead fuel ratio, size distribution, and porosity
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16

Beauducel, André, and Norbert Hilger. "Overcoming Limitations of the Independent Clusters Model for CFA by Means of Bayes-Estimation and Buffered Simple Structure." International Journal of Statistics and Probability 9, no. 4 (2020): 62. http://dx.doi.org/10.5539/ijsp.v9n4p62.

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The model of buffered simple structure is discussed as a method for modeling cross-loadings in confirmatory factor analysis. This method introduces assumptions from item sampling theory into confirmatory factor analysis. The independent clusters model, buffered simple structure, and Bayes estimation were compared by means of a simulation study based on three different population types. Population type A had zero cross-loadings, population type B had symmetrically distributed nonzero cross-loadings, and population type C had asymmetrically distributed nonzero cross-loadings. It turned out for p
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17

Jensen, Alexandria K., and William I. Ford. "Quantifying Nitrate Dynamics of a Confluence Floodplain Wetland in a Disturbed Appalachian Watershed: High-Resolution Sensing and Modeling." Transactions of the ASABE 62, no. 6 (2019): 1545–65. http://dx.doi.org/10.13031/trans.13278.

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Abstract. Floodplain wetlands often form at confluences of main river channels and small, low-order tributary streams, yet their impact on nutrient removal and downstream loading is poorly understood. We coupled high-resolution water quality data with deterministic numerical modeling of hydrologic, hydraulic, and biochemical processes impacting nitrate fate and transport in a confluence floodplain wetland along the Ohio River from June 2017 to May 2018. The modeling results were used to quantify loading from a disturbed forested watershed (Fourpole Creek watershed) and the nitrate removal capa
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18

Garcia-Garzon, Eduardo, Francisco José Abad, and Luis Eduardo Garrido. "Improving Bi-Factor Exploratory Modeling." Methodology 15, no. 2 (2019): 45–55. http://dx.doi.org/10.1027/1614-2241/a000163.

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Abstract. Bi-factor exploratory modeling has recently emerged as a promising approach to multidimensional psychological measurement. However, state-of-the-art methods relying on target rotation require researchers to select an arbitrary cut-off for defining the target matrix. Unfortunately, the consequences of such choice on factor recovery remain uninvestigated under realistic conditions (e.g., factors differing in their average loadings). Built upon the iterative target rotation based on Schmid-Leiman algorithm (SLi), a novel method is here introduced (SLiD). SLiD settles an empirical, facto
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19

Stanczak, Magda, Teresa Fras, Ludovic Blanc, Piotr Pawlowski, and Alexis Rusinek. "Blast-Induced Compression of a Thin-Walled Aluminum Honeycomb Structure—Experiment and Modeling." Metals 9, no. 12 (2019): 1350. http://dx.doi.org/10.3390/met9121350.

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The presented discussion concerns the behavior of a thin-walled hexagonal aluminum honeycomb structure subjected to blast loading. The shock wave affecting the structure is generated by detonation of the C4 charge in an explosive-driven shock tube (EDST). The EDST set-up is an instrumented device that makes it possible to study blast effects in more stable and repeatable conditions than those obtained in a free-air detonation. The formation of folds characteristic of a honeycomb deformation in the axial compression distributes the initial loading over a time period, which is considered as an e
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20

Zhang, L. M., and L. G. Kong. "Centrifuge modeling of torsional response of piles in sand." Canadian Geotechnical Journal 43, no. 5 (2006): 500–515. http://dx.doi.org/10.1139/t06-020.

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Centrifuge model tests were performed to investigate the torsional behavior of a well-instrumented model pile jacked into loose and dense sand. The whole process of pile jacking, torsional loading, and pile extraction was conducted in-flight at 40g using a four-axis robotic manipulator. The torsional response at the pile head, distributions of torque and shaft friction along the pile shaft, torsional load transfer, and loading rate effects were studied. The shaft resistances along the pile during torsional loading, compression loading, and tension loading were compared. The shear stress – loca
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21

Li, Haoran, Jiadong Wang, Juncheng Wang, Ming Hu, and Yan Peng. "Continuum Damage Mechanics Approach for Modeling Cumulative-Damage Model." Mathematical Problems in Engineering 2021 (June 2, 2021): 1–12. http://dx.doi.org/10.1155/2021/7136846.

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In this study, we propose a novel cumulative-damage model based on continuum damage mechanics under situations where the mechanical components are subjected to variable loading. The equivalent completely reversed stress amplitude accounting for the effect of mean stress, stress gradients, loading history, and additional hardening behavior related to nonproportional loading paths on high-cycle fatigue under variable loading is elaborated. The effect of mean stress, stress gradients, loading history, and additional hardening behavior related to nonproportional loading paths is considered by aver
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22

Baragmage, Dilshan S. P. Amarasinghe, Bahareh Forouzan, Koushyar Shaloudegi, Narutoshi Nakata, and Weiming Wu. "HYBRID SIMULATION OF COASTAL LOADING ON STRUCTURES." Coastal Engineering Proceedings, no. 36 (December 30, 2018): 15. http://dx.doi.org/10.9753/icce.v36.structures.15.

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Hybrid simulation combines the physical testing and computer modeling to analyze the dynamic responses of structures to external impacts (Hakuno et al., 1969). This relatively novel technique has been widely used in earthquake engineering. In the present study, it is extended to analyze the responses of structures to coastal loadings. This paper concerns mainly on the hydrodynamic loading induced by storm surge and tsunami events.
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23

Khazaal, Rusul Muaffaq, and Zaineb Ziad Ismail. "Optimization and Modeling the Performance of a Mediator-less Microbial Fuel Cell using Butler-Volmer-Monod Model." Journal of Engineering 26, no. 9 (2020): 83–94. http://dx.doi.org/10.31026/j.eng.2020.09.06.

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In this study, a one-dimensional model represented by Butler-Volmer-Monod (BVM) model was proposed to compute the anode overpotential and current density in a mediator-less MFC system. The system was fueled with various organic loadings of real field petroleum refinery oily sludge to optimize the favorable organic loading for biomass to operate the suggested system. The increase in each organic loading showed higher resistance to electrons transport to the anode represented by ohmic loss. On the contrary, both activation and mass transfer losses exhibited a noticeable decrement upon the increa
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24

Abdul-Latif, A., M. Clavel, V. Ferney, and K. Saanouni. "On the Modeling of Nonproportional Cyclic Plasticity of Waspaloy." Journal of Engineering Materials and Technology 116, no. 1 (1994): 35–44. http://dx.doi.org/10.1115/1.2904253.

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The isotropic hardening is known to play an effective role in the overhardening of materials under nonproportional cyclic loading. However, the behavior of the two states of Waspaloy (namely overaged and underaged states) under these loading conditions, shows that the kinematic hardening has also a considerable role in the overhardening. Experimental tests were carried out on these two states under various proportional and nonproportional cyclic loading conditions at room temperature. The effect of loading paths on micro-mechanisms of deformation was studied. From a microstructural point of vi
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25

Fedotov, V. P. "Thermomechanical approach to modeling the loading diagram." Journal of Machinery Manufacture and Reliability 42, no. 2 (2013): 132–40. http://dx.doi.org/10.3103/s1052618813020052.

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26

Diamantopoulos, Spyridon, and Michalis Fragiadakis. "Modeling of rocking frames under seismic loading." Earthquake Engineering & Structural Dynamics 51, no. 1 (2021): 108–28. http://dx.doi.org/10.1002/eqe.3558.

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27

Denney, Dennis. "Modeling the Gas-Well Liquid-Loading Process." Journal of Petroleum Technology 58, no. 03 (2006): 65–67. http://dx.doi.org/10.2118/0306-0065-jpt.

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28

Berdyshev, B. V., I. V. Skopintsev, H. Hosseini, and B. Shirkavand Hadavand. "Rheological modeling of polymeric films under loading." Russian Journal of Applied Chemistry 88, no. 5 (2015): 871–78. http://dx.doi.org/10.1134/s1070427215050237.

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29

Pshenin, V. V., and М. Т. Gaysin. "GAS DYNAMICS MODELING DURING TANKER LOADING OPERATIONS." MINING INFORMATIONAL AND ANALYTICAL BULLETIN 12, no. 28 (2017): 3–12. http://dx.doi.org/10.25018/0236-1493-2017-12-28-3-12.

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30

Darling, Robert. "Modeling Air Electrodes with Low Platinum Loading." Journal of The Electrochemical Society 166, no. 7 (2019): F3058—F3064. http://dx.doi.org/10.1149/2.0101907jes.

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31

Smolin, Alexey, and Galina Eremina. "MODELING OSTEOCYTE UNDER SHOCK-WAVE THERAPEUTIC LOADING." Facta Universitatis, Series: Mechanical Engineering 22, no. 3 (2024): 435. http://dx.doi.org/10.22190/fume231202006s.

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Dental implants have substantial significance in modern dentistry, but their osseointegration stage remains the most crucial and time-consuming step for compensating for a lost tooth. One promising approach to improve osseointegration rates is the use of extracorporeal shock wave therapy, which has shown efficacy in treating fractures, bone defects, and bone tissue regeneration in surgical and arthroplasty procedures. To comprehend the potential of shock wave therapy in accelerating implant osseointegration, it is crucial to investigate the influence of mechanical loading on ossification proce
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32

Khajeh Salehani, M., N. Irani, and L. Nicola. "Modeling adhesive contacts under mixed-mode loading." Journal of the Mechanics and Physics of Solids 130 (September 2019): 320–29. http://dx.doi.org/10.1016/j.jmps.2019.06.010.

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33

Sheil, Brian B., and Bryan A. McCabe. "Biaxial Loading of Offshore Monopiles: Numerical Modeling." International Journal of Geomechanics 17, no. 2 (2017): 04016050. http://dx.doi.org/10.1061/(asce)gm.1943-5622.0000709.

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34

Reckhow, K. H., and S. C. Chapra. "Modeling excessive nutrient loading in the environment." Environmental Pollution 100, no. 1-3 (1999): 197–207. http://dx.doi.org/10.1016/s0269-7491(99)00092-5.

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35

Yants, A. Yu, and L. A. Teplyakova. "Modeling of Loading of Single Crystal Samples." Russian Physics Journal 58, no. 3 (2015): 330–35. http://dx.doi.org/10.1007/s11182-015-0502-0.

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36

Adibi, H., S. M. Rezaei, and Ahmed A. D. Sarhan. "Analytical modeling of grinding wheel loading phenomena." International Journal of Advanced Manufacturing Technology 68, no. 1-4 (2013): 473–85. http://dx.doi.org/10.1007/s00170-013-4745-z.

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37

Davids, William G. "Foundation Modeling for Jointed Concrete Pavements." Transportation Research Record: Journal of the Transportation Research Board 1730, no. 1 (2000): 34–42. http://dx.doi.org/10.3141/1730-05.

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Issues related to the finite element modeling of base and subgrade materials under jointed plain concrete pavements are examined. The threedimensional finite element program EverFE, developed in conjunction with the Washington State Department of Transportation, was employed for the analyses. The relevant modeling capabilities of EverFE are detailed, including the ability to model multiple foundation layers, the incorporation of loss of contact between slab and base, and the efficient iterative solution strategies that make large three-dimensional finite element analyses possible on desktop co
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38

Beasley, E. L., M. A. Hiller, and R. B. Biggs. "Susceptibility of U.S. Estuaries to Pollution." Water Science and Technology 20, no. 6-7 (1988): 211–19. http://dx.doi.org/10.2166/wst.1988.0205.

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Utilizing data primarily from the U.S. Department of Commerce, both estuaries and watersheds for 78 U.S. systems are analyzed. Watersheds are classified according to total population and discrete subpopulations. The Vollenweider approach, which compares hydraulic loading to nutrient loading of lakes, is adapted to estuaries. By considering total population as a surrogate of point source nutrients, agricultural workers as a surrogate of non-point source toxics and nutrients and chemical + metal workers as a surrogate of point source toxics, we can estimate potential anthropogenic impacts on wat
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39

Pathan, A. A., G. B. Khaskheli, and A. S. Qureshi. "A Theoretical Framework for Service Life Prediction of Reinforced Concrete Structures in Chloride Environment using Load Factors." Engineering, Technology & Applied Science Research 11, no. 1 (2021): 6806–9. http://dx.doi.org/10.48084/etasr.4033.

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Service life modeling of reinforced concrete structures in a chloride environment is mainly performed without considering the loading effects. Different loading effects can produce different service life results. This study presents a theoretical framework for the modeling of the service life of reinforced concrete structures in a chloride environment using loading factors, showing that, depending on the loading nature (either compression or tension), different diffusion results could be obtained. This paper also highlights various approaches to service life modeling, such as the deterministic
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40

Pathan, A. A., G. B. Khaskheli, and A. S. Qureshi. "A Theoretical Framework for Service Life Prediction of Reinforced Concrete Structures in Chloride Environment using Load Factors." Engineering, Technology & Applied Science Research 11, no. 1 (2021): 6806–9. https://doi.org/10.48084/etasr.4033.

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Service life modeling of reinforced concrete structures in a chloride environment is mainly performed without considering the loading effects. Different loading effects can produce different service life results. This study presents a theoretical framework for the modeling of the service life of reinforced concrete structures in a chloride environment using loading factors, showing that, depending on the loading nature (either compression or tension), different diffusion results could be obtained. This paper also highlights various approaches to service life modeling, such as the deterministic
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41

Kim, Eun Sook, Myeongsun Yoon, and Taehun Lee. "Testing Measurement Invariance Using MIMIC." Educational and Psychological Measurement 72, no. 3 (2011): 469–92. http://dx.doi.org/10.1177/0013164411427395.

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Multiple-indicators multiple-causes (MIMIC) modeling is often used to test a latent group mean difference while assuming the equivalence of factor loadings and intercepts over groups. However, this study demonstrated that MIMIC was insensitive to the presence of factor loading noninvariance, which implies that factor loading invariance should be tested through other measurement invariance testing techniques. MIMIC modeling is also used for measurement invariance testing by allowing a direct path from a grouping covariate to each observed variable. This simulation study with both continuous and
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42

Vaganova, Irina K., Evgeniya G. Skripnyak, Vladimir V. Skripnyak, and Vladimir A. Skripnyak. "Modeling of Mechanical Behavior of Ceramic Nanocomposites." Applied Mechanics and Materials 756 (April 2015): 187–95. http://dx.doi.org/10.4028/www.scientific.net/amm.756.187.

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Deformation and damage occurring at the meso-scale level in structured representative volumes (RVE) of modern nanocomposites in wide loading conditions were simulated. The computational models of a structured RVE of ceramic nanocomposites were developed using the data of structure researches on meso-, micro -, and nanoscale levels. The critical fracture stress on meso-scale level depends not only on relative volumes of voids and inclusions, but also on the parameters of inclusion clusters. The critical fracture stress at the meso-scale level depends not only on relative volumes of voids and st
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43

Savkin, A. N., A. A. Sedov, K. A. Badikov, and A. N. Baryshnikov. "MODELING AND CALCULATION OF FATIGUE CRACK GROWTH LIFE IN STEELS." IZVESTIA VOLGOGRAD STATE TECHNICAL UNIVERSITY, no. 10(257) (October 25, 2021): 45–49. http://dx.doi.org/10.35211/1990-5297-2021-10-257-45-49.

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In this work, we studied the kinetics of fatigue crack growth on compact steel tensile specimens (C (T)-type), in the middle section of crack growth diagram under regular and irregular loading with different asymmetries and maximum load. The crack growth kinetics was obtained by the authors experimentally on modern servo-hydraulic testing machine. Irregular loading was carried out using samples of standard loading spectra characteristic of various technical objects experiencing variable loading during operation. The values of the crack growth rate were obtained. Parameters that evaluate the ch
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44

Vansovich, K. A., and V. I. Yadrov. "Elastoplastic modeling of fatigue cracks." Omsk Scientific Bulletin, no. 189 (2024): 20–27. http://dx.doi.org/10.25206/1813-8225-2024-189-20-27.

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The presented work provides a detailed analysis of modern approaches to creating elastoplastic models of surface crack growth that take into account the influence of the type of biaxial loading on the development of stresses and strains at the crack tip and, accordingly, on the crack growth rate. The use of the plastic stress intensity factor as a characteristic of resistance to cyclic deformation and fracture for biaxial loading conditions is substantiated. Continuum plasticity models are proposed to simulate the elastoplastic behavior of metal using numerical methods and, in particular, the
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45

Knapp, Alexander, and Lakiesha N. Williams. "Predicting the Effect of Localized ACL Damage on Neighbor Ligament Mechanics via Finite Element Modeling." Bioengineering 9, no. 2 (2022): 54. http://dx.doi.org/10.3390/bioengineering9020054.

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The anterior cruciate ligament (ACL) plays a pivotal role in support of the knee under loading. When damaged, it is known that substantial changes in the mechanics of the neighboring ligaments can be observed. However, a localized damage approach to investigating how ACL deficiency influences the neighboring ligaments has not been carried out. To do this, a finite element model, incorporating a continuum damage material model of the ACL, was implemented. Localized ACL damage was induced using high quadriceps force loading. Once damaged, anterior shear forces or tibial torque loadings were appl
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46

Chernobryvko, Marina, Leopold Kruszka, and Yuorii Vorobiev. "Thermo-Elastic-Plastic Constitutive Model for Numerical Analysis of Metallic Structures under Local Impulsive Loadings." Applied Mechanics and Materials 566 (June 2014): 493–98. http://dx.doi.org/10.4028/www.scientific.net/amm.566.493.

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The tasks of dynamic behavior of constructions’ elements under the impulsive loadings modeling are examined. Mathematical models are taken into account to calculate thermo-elastic-plastic deformations, dynamic properties of materials, large deformations and strains. Numerical calculations of the dynamic stress-strain state for steel constructions are conducted for a local impulsive loading.
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47

Sinclair, G. B., and N. G. Cormier. "Contact Stresses in Dovetail Attachments: Physical Modeling." Journal of Engineering for Gas Turbines and Power 124, no. 2 (2002): 325–31. http://dx.doi.org/10.1115/1.1415740.

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Simple physical models for the stresses in dovetail attachments are developed. These models address: to slip or not to slip, nominal stresses during loading up, peak contact and shear stresses during loading up, hoop stresses during loading up, peak contact and shear stresses during unloading, and hoop stresses during unloading. Comparisons are made with a previous paper on companion finite element modeling. Generally there is good agreement between the simple physical models and the finite element analysis. Together the two identify a pinching mechanism as leading to large fluctuations in hoo
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48

Lagerev, Igor A. "Simulation of a bridge crane metal construction loading parameters." Vestnik Bryanskogo gosudarstvennogo tekhnicheskogo universiteta, no. 4 (December 30, 2009): 65–70. https://doi.org/10.5281/zenodo.1301100.

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The technique of simulation modeling of the main factors of loading of metal structures of the bridge crane of General purpose, based on reliable accounting conditions and modes of its operation. Shows the application of the methods when performing numerical simulations of the loading of steel structures of several full-scale overhead cranes.
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49

Jiang, Y., and H. Sehitoglu. "Modeling of Cyclic Ratchetting Plasticity, Part I: Development of Constitutive Relations." Journal of Applied Mechanics 63, no. 3 (1996): 720–25. http://dx.doi.org/10.1115/1.2823355.

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The existing plasticity models recognize that ratchetting direction strongly depends on the loading path, the stress amplitude, and the mean stresses, but their predictions deviate from experiments for a number of materials. We propose an Armstrong-Frederick type hardening rule utilizing the concept of a limiting surface for the backstresses. The model predicts long-term ratchetting rate decay as well as constant ratchetting rate for both proportional and nonproportional loadings. To represent the transient behavior, the model encompasses a memory surface in the deviatoric stress space which r
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50

Rokhgireh, H., and A. Nayebi. "Multiaxial ratcheting modeling with incorporation of a yield surface distortion model." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 231, no. 6 (2016): 979–94. http://dx.doi.org/10.1177/0954406216634747.

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Correct determination of ratcheting strain is very important in cyclic loading. A new simple yield surface distortion model is presented and its effect on cyclic loading and ratcheting prediction is investigated in this research. Model of Baltov and Sawczuk was modified in order to be able to consider directional distortion of the yield surface. Movement of the yield surface center is modeled by Chaboche's nonlinear kinematic hardening model. Isotropic hardening was also considered. A triangular function is used and necessary cyclic plasticity relations are developed. Convexity of the proposed
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