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Готові списки джерел за темами / Ice surface softening

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Добірка наукової літератури з теми "Ice surface softening"

Автор: Grafiati

Опубліковано: 28 травня 2022

Оновлено: 31 липня 2025

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Статті в журналах з теми "Ice surface softening"

1

Khomenko, Khomenko, and Falko. "Nonlinear model of ice surface softening during friction." Condensed Matter Physics 19, no. 3 (2016): 33002. http://dx.doi.org/10.5488/cmp.19.33002.

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Khomenko, A., and D. Logvinenko. "Time series analysis of friction force at self-affine mode of ice surface softening." Condensed Matter Physics 24, no. 4 (2021): 43501. http://dx.doi.org/10.5488/cmp.24.43501.

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The self-affine mode of ice softening during friction is investigated within the rheological model for viscoelastic medium approximation. The different modes of ice rubbing, determined by formation of surface liquid-like layer, are studied. The analysis of time series of friction force is carried out, namely Fourier analysis, construction of autocorrelation and difference autocorrelation functions. The spectral power law is detected for modes of crystalline ice as well as of a mixture of stable ice and metastable softening. The self-similarity and aperiodic character of corresponding time seri

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3

Albrecht, T., and A. Levermann. "Fracture-induced softening for large-scale ice dynamics." Cryosphere 8, no. 2 (2014): 587–605. http://dx.doi.org/10.5194/tc-8-587-2014.

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Abstract. Floating ice shelves can exert a retentive and hence stabilizing force onto the inland ice sheet of Antarctica. However, this effect has been observed to diminish by the dynamic effects of fracture processes within the protective ice shelves, leading to accelerated ice flow and hence to a sea-level contribution. In order to account for the macroscopic effect of fracture processes on large-scale viscous ice dynamics (i.e., ice-shelf scale) we apply a continuum representation of fractures and related fracture growth into the prognostic Parallel Ice Sheet Model (PISM) and compare the re

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4

Albrecht, T., and A. Levermann. "Fracture-induced softening for large-scale ice dynamics." Cryosphere Discussions 7, no. 5 (2013): 4501–44. http://dx.doi.org/10.5194/tcd-7-4501-2013.

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Abstract. Floating ice shelves can exert a retentive and hence stabilizing force onto the inland ice sheet of Antarctica. However, this effect has been observed to diminish by fracture-coupled dynamic processes within the protective ice shelves leading to accelerated ice flow and hence to a sea-level contribution. In order to better understand the role of fractures in ice dynamics we apply a large-scale continuum representation of fractures and related fracture growth into the prognostic Parallel Ice Sheet Model (PISM). To this end we introduce a higher-order accuracy advection scheme for the

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5

MINCHEW, BRENT M., COLIN R. MEYER, ALEXANDER A. ROBEL, G. HILMAR GUDMUNDSSON, and MARK SIMONS. "Processes controlling the downstream evolution of ice rheology in glacier shear margins: case study on Rutford Ice Stream, West Antarctica." Journal of Glaciology 64, no. 246 (2018): 583–94. http://dx.doi.org/10.1017/jog.2018.47.

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ABSTRACTIce rheology governs how glaciers flow and respond to environmental change. The rheology of glacier ice evolves in response to a variety of mechanisms, including damage, heating, melting and the development of crystalline fabric. The relative contributions of these rheological mechanisms are not well understood. Using remotely sensed data and physical models, we decouple the influence of each of the aforementioned mechanisms along the margins of Rutford Ice Stream, a laterally confined outlet glacier in West Antarctica. We show that fabric is an important control on ice rheology in the

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6

Oraschewski, Falk M., and Aslak Grinsted. "Modeling enhanced firn densification due to strain softening." Cryosphere 16, no. 7 (2022): 2683–700. http://dx.doi.org/10.5194/tc-16-2683-2022.

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Abstract. In the accumulation zone of glaciers and ice sheets snow is transformed into glacial ice by firn densification. Classically, this process is assumed to solely depend on temperature and overburden pressure, which is controlled by the accumulation rate. However, exceptionally thin firn layers have been observed in the high-strain shear margins of ice streams. Previously, it has been proposed that this firn thinning can be explained by an enhancement of firn densification due to the effect of strain softening inherent to power-law creep. This hypothesis has not been validated, and the g

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7

Armand Høydal, Øyvind. "A force-balance study of ice flow and basal conditions of Jutulstraumen, Antarctica." Journal of Glaciology 42, no. 142 (1996): 413–25. http://dx.doi.org/10.1017/s0022143000003403.

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Abstract Stresses and velocities at depth are calculated across Jutulstraumen, an ice stream in Dronning Maud Land, draining about 1% of the Antarctic ice sheet. The force-balance study is based on data from kinematic GPS measurements on three strain nets, each consisting of 3 × 3 stakes. The maximum measured velocity is 443 m a−1 and the velocity variation over short distances is large compared with studied ice streams in West Antarctica. The surface topography together with the measured velocities across the profile indicate that the bottom topography has a great influence on the flow direct

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Borstad, C. P., E. Rignot, J. Mouginot, and M. P. Schodlok. "Creep deformation and buttressing capacity of damaged ice shelves: theory and application to Larsen C ice shelf." Cryosphere 7, no. 6 (2013): 1931–47. http://dx.doi.org/10.5194/tc-7-1931-2013.

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Abstract. Around the perimeter of Antarctica, much of the ice sheet discharges to the ocean through floating ice shelves. The buttressing provided by ice shelves is critical for modulating the flux of ice into the ocean, and the presently observed thinning of ice shelves is believed to be reducing their buttressing capacity and contributing to the acceleration and thinning of the grounded ice sheet. However, relatively little attention has been paid to the role that fractures play in the ability of ice shelves to sustain and transmit buttressing stresses. Here, we present a new framework for q

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9

Albrecht, Torsten, and Anders Levermann. "Fracture field for large-scale ice dynamics." Journal of Glaciology 58, no. 207 (2012): 165–76. http://dx.doi.org/10.3189/2012jog11j191.

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AbstractRecent observations and modeling studies emphasize the crucial role of fracture mechanics for the stability of ice shelves and thereby the evolution of ice sheets. Here we introduce a macroscopic fracture-density field into a prognostic continuum ice-flow model and compute its evolution incorporating the initiation and growth of fractures as well as their advection with two dimensional ice flow. To a first approximation, fracture growth is assumed to depend on the spreading rate only, while fracture initiation is defined in terms of principal stresses. The inferred fracture-density fie

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10

Khomenko, A. V., D. T. Logvinenko, and Ya V. Khyzhnya. "Nonlinear Model of Ice Surface Softening during Friction Taking into Account Spatial Heterogeneity of Temperature." Journal of Nano- and Electronic Physics 12, no. 4 (2020): 04002–1. http://dx.doi.org/10.21272/jnep.12(4).04002.

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Дисертації з теми "Ice surface softening"

1

Хоменко, Олексій Віталійович, Алексей Витальевич Хоменко, Oleksii Vitaliiovych Khomenko, B. N. J. Persson, М. А. Khomenko, and S. V. Rudenko. "Synergetic model of frictional softening of ice surface layer." Thesis, Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна Національної академії наук України, 2015. http://essuir.sumdu.edu.ua/handle/123456789/41630.

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2

Сухомлін, М. І. "Моделювання впливу шуму на самоподібний режим розм’якшення поверхні льоду при терті". Master's thesis, Сумський державний університет, 2019. http://essuir.sumdu.edu.ua/handle/123456789/75666.

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У роботі побудована математична модель розм’якшення поверхні льоду при терті. Виведені основні рівняння для побудови залежностей. На основі отриманих рівнянь були побудовані: фазова діаграма, розподіл ймовірностей, залежності деформації зсуву від температури термостата, часові ряди сили тертя. Проведений аналіз часових рядів сили тертя, а саме Фур’є аналіз, побудова автокореляційної функції, різницевої автокореляційної функції.

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3

Хоменко, Олексій Віталійович, Алексей Витальевич Хоменко, Oleksii Vitaliiovych Khomenko, С. В. Руденко та М. А. Хоменко. "Временные ряды силы трения при размягчении поверхностного слоя льда". Thesis, Сумский государственный университет, 2017. http://essuir.sumdu.edu.ua/handle/123456789/65289.

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Для описания размягчения поверхности льда при трении разработана модель вязкоупругой среды, обладающей теплопроводностью [1]. Исследовано влияние аддитивных некоррелированных шумов теплового и деформационного полей на размягчение.

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Хоменко, Олексій Віталійович, Алексей Витальевич Хоменко, Oleksii Vitaliiovych Khomenko, С. В. Руденко та М. А. Хоменко. "Временные ряды силы трения при размягчении поверхностного слоя льда". Thesis, Сумский государственный университет, 2017. http://essuir.sumdu.edu.ua/handle/123456789/65686.

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Анотація:

Для описания размягчения поверхности льда при трении разработана модель вязкоупругой среды, обладающей теплопроводностью [1]. Исследовано влияние аддитивных некоррелированных шумов теплового и деформационного полей на размягчение. Выведено уравнение Ланжевена и соответствующее уравнение Фоккера-Планка.

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Частини книг з теми "Ice surface softening"

1

Yushchenko, O. V., A. Yu Badalian, and O. V. Khomenko. "The Stability Analysis of Stationary Modes of the Ice Surface Softening During the Friction Process." In Springer Proceedings in Physics. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-74741-1_23.

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2

Terzis Dimitrios and Laloui Lyesse. "Effect of treatment on the microstructural characteristics of bio-improved sand." In Advances in Soil Mechanics and Geotechnical Engineering. IOS Press, 2015. https://doi.org/10.3233/978-1-61499-601-9-970.

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Bio-chemical processes have recently become the core of several studies in the geoengineering field, where the emphasis is placed on new and emerging applications. Microbially Induced Calcite Precipitation has been introduced as an alternative cementation mechanism for soils, and it is studied for its potential to offer substantial and environment-friendly solutions for soil improvement. In this paper, we focus on the microstructural characteristics of the new geo-material, which is engineered after harnessing a treatment process including multiple injections of bacteria and chemical solutions

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Тези доповідей конференцій з теми "Ice surface softening"

1

Khomenko, Alexei, Roman Chernushchenko, Alexander Goncharov, Kateryna Khomenko, Yaroslava Khyzhnya, and Iryna Shuda. "Periodic Intermittent Mode of Ice Surface Softening During Friction at Deformational Defect of Ice Shear Modulus." In 2023 IEEE 13th International Conference Nanomaterials: Applications & Properties (NAP). IEEE, 2023. http://dx.doi.org/10.1109/nap59739.2023.10310813.

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2

Crawford, David A. "Dynamic Weakening Due to Localized Thermal Softening with Application to the Formation of Hypervelocity Impact Craters." In 2024 17th Hypervelocity Impact Symposium. American Society of Mechanical Engineers, 2024. https://doi.org/10.1115/hvis2024-074.

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Abstract Introduction The need for a dynamic weakening mechanism to facilitate the collapse of a transient cavity to produce the complex crater shape has been well documented. Several mechanisms have been proposed: acoustic fluidization [1], thermal softening due to shock melting [2] and frictional melting (i.e. thermal softening) along fault planes [3]. Several studies have stressed the potential importance of thermal softening during the impact process [4-10] which is the subject of this work. 2. Methods In prior work, we developed a numerical model of shear failure and frictional heating wi

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3

Barrera, C., A. Arrieta, and N. Escobar. "Application of Conducting Polymer Composites With Cellulose Fibers on Water Softening." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-89969.

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Hard water is unsuitable for industrial and domestic purposes given its high levels of calcium and magnesium divalents which generate scale, oxidation and are antagonistic of optimal performance of detergents and industrial equipment. Conventional methods for water softening generate by-products that need to be treated, which makes these methods economically and environmentally unsustainable and open the opportunity to develop new technology for this application. The ion exchange behavior during the charge and discharge processes (i.e. oxidation / reduction), of conducting polymers and the com

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4

Dutta, Sujan, Bipul Hawlader, and Ryan Phillips. "Vertical Penetration of Offshore Pipelines: A Comparative Study Between Finite Element and Finite Volume Methods." In ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-42076.

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Deepwater surface laid pipelines generally penetrate a fraction of their diameter into the seabed. The near surface penetration behaviour of steel catenary risers (SCRs) is equally important in offshore oil and gas developments. Theoretical, physical and numerical investigations have been performed to understand pipeline–soil interaction during vertical penetration. The large deformation finite element (LDFE) modeling is a recent and advanced tool among different numerical modeling techniques. The authors of this study simulated the penetration of pipeline using Abaqus CEL Finite Element (FE)

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5

Chahine, Nadeen O., Christopher C. B. Wang, Clark T. Hung, and Gerard A. Ateshian. "Determination of Poisson’s Ratios of Bovine Articular Cartilage in Tension and Compression Using Osmotic and Mechanical Loading." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-32622.

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The existence of osmotic pressure inside cartilage gives the tissue a propensity to swell. This swelling pressure is balanced by the tensile stresses generated within the solid matrix at free-swelling [1, 2]. Recent studies have shown that cartilage exhibits significant strain-softening when compressed relative to its free-swelling state [3–5]. Such strain-softening behavior has been physically interpreted within the context of osmotic swelling pressure and tension-compression nonlinearity [4, 9]. This has provided the rationale for extracting both the tensile and compressive Young’s moduli fr

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Jung, Chulwoo, Bogdan I. Epureanu, Sanghum Baik, and Marcus B. Huffman. "Nonlinear Reduced-Order Models for the Structural Dynamics of Combustor Systems With Pre-Stress and Friction." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-64740.

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An efficient methodology to capture the nonlinear responses of combustor systems with pre-stress and Coulomb friction is developed. The combustor systems experience wear at the interfaces between components due to flow-induced vibrations. In particular, wear has been observed at the interface between the transition piece and the hula seal, and at the interface between the hula seal and the liner. These interfaces are pre-stressed, and their vibratory response has a softening nonlinearity caused by Coulomb friction combined with micro-slip. In addition, the contact between the hula seal and the

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7

Sahoo, Benudhar, R. K. Satpathy, and S. K. Panigrahi. "Isothermal Fatigue Behaviour of Two Nickelbase Alloys for Turbine Blades of Fighter Aircraft Engines." In ASME 2013 Gas Turbine India Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gtindia2013-3682.

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Turbine blades of fighter class aero-engines are subjected to repeated and unsteady throttle excursions during exploitation leading to thermo-mechanical fatigue. Failures of few turbine blades have led to premature withdrawals and major accidents. Hence, there is a need to study the high temperature fatigue behavior of these alloys. This case study deals with the isothermal fatigue behavior at 900°C for two nickel base alloys which are used for manufacturing turbine blades. The materials selected for study are precipitation strengthened wrought nickel base super alloy AP 220BD of Russian origi

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Subbiah, Surej Kumar, Ariffin Samsuri, Assef Mohamad-Hussein, et al. "Managing Sanding Risk in Sandstone Reservoir Through a New Constitutive Model." In SPE Middle East Oil & Gas Show and Conference. SPE, 2021. http://dx.doi.org/10.2118/204666-ms.

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Abstract Sandstone reservoir failure during hydrocarbon production can cause negative impact on the oil/gas field development economics. Loss of integrity and hydrocarbon leakage due to downhole or surface erosion can decrease the risk of operational safety. Therefore, a proper understanding of the best formulation to manage and find the balance between productivity and sand risk is very important. Making decisions for the best and most economical completion design needs a full and proper sanding risk analysis driven by geomechanics modeling. The accuracy of modeling the reservoir rock mechani

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Fournier, B., M. Sauzay, and A. Pineau. "Elevated Temperature Creep-Fatigue-Oxydation Interactions in 9–12 % Cr Steels: Effects of Tensile/Compressive Hold Times on Fatigue Life." In ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2008. http://dx.doi.org/10.1115/esda2008-59184.

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The 9–12%Cr martensitic steels are candidate materials for several components of the generation IV and fusion nuclear reactors. In these future applications, in addition to long holding periods, cyclic loadings corresponding to start and stopoperations and maintenance must also be taken into account. Creep-fatigue interactions must therefore be considered to design these components. A broad literature review showed that between 20°C and 650°C the fatigue lifetime of these materials followed a unique Manson-Coffin law. Adding a stress-relaxation holding period significantly reduces the fatigue

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Pacholak, Roman, Wladyslaw Gardziejczyk, Marta Wasilewska, Pawel Gierasimiuk, and Agnieszka Woszuk. "Effect of zeolite addition to modified bitumen for application in wearing course." In 8th International Conference on Road and Rail Infrastructure. University of Zagreb Faculty of Civil Engineering, 2024. http://dx.doi.org/10.5592/co/cetra.2024.1694.

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Generally, asphalt mixtures intended for wearing surfaces subject to heavy traffic are made on the basis of polymer-modified binders. Their production requires high energy consumption. Warm mix asphalt (WMA) technologies are an excellent solution for fulfilling these requirements. Foaming based WMA have shown great potential in reducing the mixing and compaction temperature of asphalt mixtures by decreasing the viscosity of the binder. Foaming based WMA can be obtained by adding to the binder water-bearing additives such as zeolites. This paper presents the results of a study of two zeolite ad

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