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Relevant bibliographies by topics / Dual contact zone

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Journal articles
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Academic literature on the topic 'Dual contact zone'

Author: Grafiati

Published: 6 September 2023

Last updated: 31 July 2025

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Journal articles on the topic "Dual contact zone"

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Tran, Van Bon. "Dual finite element analysis for contact problem of elastic bodies with an enlarging contact zone." Applications of Mathematics 31, no. 5 (1986): 345–64. http://dx.doi.org/10.21136/am.1986.104213.

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Ślusarczyk, Łukasz, and Agnieszka Twardowska. "Method for Determining Contact Temperature of Tool Rake Face During Orthogonal Turning of Ti-6Al-4V Alloy." Materials 18, no. 13 (2025): 2980. https://doi.org/10.3390/ma18132980.

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This paper proposes a method for determining the contact temperature in the secondary shear zone. The input data include the results of the experimental tests of the orthogonal turning of a Ti-6Al-4V titanium workpiece using uncoated WC-Co tools with a flat rake face. The cutting force components were recorded using a piezoelectric dynamometer, a thermovision camera was used to record the temperature in the cutting zone, and a high-speed camera was used to record the chip-forming process. The independent variables included machining parameters, feed rate, cutting speed, and rake angle. A dual-

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Härke, Heinrich. "Through a Black Hole into Parallel Universes." Ancient Civilizations from Scythia to Siberia 26, no. 2 (2020): 413–24. http://dx.doi.org/10.1163/15700577-12341383.

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Abstract The Anglo-Saxon immigration of the 5th-6th centuries AD led to a dual contact situation in the British Isles: with the native inhabitants of the settlement areas in south-eastern England (internal contact zone), and with the Celtic polities outside the Anglo-Saxon areas (external contact zone). In the internal contact zone, social and ethnogenetic processes resulted in a complete acculturation of the natives by the 9th century. By contrast, the external contact zone between Anglo-Saxon and Celtic polities resulted in a cultural and linguistic split right across the British Isles up to

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Yu, Yan, Rong Ji Zhou, and Feng Xue Wang. "Numerical Simulation of the Temperature Field During DP1000 Dual-Phase Steel Resistance Spot Welding." Advanced Materials Research 391-392 (December 2011): 666–71. http://dx.doi.org/10.4028/www.scientific.net/amr.391-392.666.

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Dual phase steel resistance spot welding process is transient, rapid, invisible, complex, which makes the physical process of welding not yet be fully understood. Both the preprocessing contact stress field and thermo - electric transient process under alternative current(AC)load of the resistance spot welding of DP1000 dual - phase steel are analyzed by ANSYS12.0 finite-element analysis software. The fusion zone formation process and the contact situation of electrode and workpiece, between workpieces, lamination surface is investigated through numerical simulation. The project can help under

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Berre, Simon Le, Isabelle Ramière, Jules Fauque, and David Ryckelynck. "Condition Number and Clustering-Based Efficiency Improvement of Reduced-Order Solvers for Contact Problems Using Lagrange Multipliers." Mathematics 10, no. 9 (2022): 1495. http://dx.doi.org/10.3390/math10091495.

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This paper focuses on reduced-order modeling for contact mechanics problems treated by Lagrange multipliers. The high nonlinearity of the dual solutions lead to poor classical data compression. A hyper-reduction approach based on a reduced integration domain (RID) is considered. The dual reduced basis is the restriction to the RID of the full-order dual basis, which ensures the hyper-reduced model to respect the non-linearity constraints. However, the verification of the solvability condition, associated with the well-posedness of the solution, may induce an extension of the primal reduced bas

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Parks, Steve, and Nick Pollard. "Emergent Strategies for an Established Field: The Role of Worker-Writer Collectives in Composition and Rhetoric." College Composition & Communication 61, no. 3 (2010): 476–509. http://dx.doi.org/10.58680/ccc20109957.

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We argue that the Federation of Worker Writers and Community Publishers, with its dual emphasis on literacy and occupational skills, can serve as a new model for writing classrooms and writing program administrators. We further contend that the “contact zone” classroom should be replaced with community-based “federations.”

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Onyshkevych, V. M., and G. M. Barabash. "Frictional heating of system punch-elastic half plane when sliding along creative line." Bulletin of Taras Shevchenko National University of Kyiv. Series: Physics and Mathematics, no. 2 (2023): 140–43. http://dx.doi.org/10.17721/1812-5409.2023/2.23.

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Friction heating of system punch-elastic half plane when sliding along creative line is considered. Model of so-called “third body”, i.e., thin near-surface and intermediate layers, the physical and mechanical properties of which differ from those of the interacting bodies, and by the microgeometry of their surfaces in the contact zone, used for mathematical description of contact. The method of determination of thermal contact conductance in mathematical modelling of contact interaction with considering friction and hear generation by “third body” is presented. Using of modified conditions of

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Chang, Yoon Suk, Seong In Moon, Young Jin Kim, Jin Ho Lee, Myung Ho Song, and Young Hwan Choi. "Assessment of Steam Generator Tubes with Dual Axial Through-Wall Cracks." Solid State Phenomena 120 (February 2007): 71–76. http://dx.doi.org/10.4028/www.scientific.net/ssp.120.71.

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In this paper, conservatisms of current plugging criteria on steam generator tubes are reviewed and six new failure prediction models for dual through-wall cracks are proposed. In order to determine the optimum ones among these local or global failure prediction models, a series of plastic collapse tests and corresponding finite element analyses are carried out with respect to two adjacent axial through-wall cracks in thin plates. Then, reaction force model, plastic zone contact model and COD (Crack Opening Displacement) base model were selected as the optimum ones for integrity assessment of

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Tang, Kejie, Minjie Wen, Yi Tian, et al. "Numerical Simulation on Two-Dimensional Dual-Zone Axisymmetric Consolidation for Marine Soft Soil Improved by PVTD Considering Interfacial Thermal Resistance." Journal of Marine Science and Engineering 12, no. 10 (2024): 1878. http://dx.doi.org/10.3390/jmse12101878.

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Prefabricated vertical drains combined with heating is a new approach to improving the mechanical properties of soft clay foundations. Rising temperatures cause the formation of concentric and radially aligned soil regions with distinct heterogeneous characteristics. This results in incomplete contact between adjacent soil layers, with the water in the interstices impeding heat transfer and manifesting as a thermal resistance effect. Based on the theory of thermo-hydro-mechanical coupling, a two-dimensional dual-zone axisymmetric marine soft soil model improved by a prefabricated vertical ther

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Chen, Zuo Rong, and Shou Wen Yu. "Interaction between a Rigid Cylinder with a Piezoelectric Half-Space with Partial Adhesion." Advanced Materials Research 33-37 (March 2008): 333–38. http://dx.doi.org/10.4028/www.scientific.net/amr.33-37.333.

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An axisymmetric problem of interaction of a rigid rotating flat ended punch with a transversely isotropic linear piezoelectric half-space is considered. The contact zone consists of an inner circular adhesion region surrounded by an outer annular slip region with Coulomb friction. Beyond the contact region, the surface of the piezoelectric half-space is free from load. With the aid of the Hankel integral transform, this mixed boundary value problem is formulated as a system of dual integral equations. By solving the dual integral equations, analytical expressions for the tangential stress and

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Dissertations / Theses on the topic "Dual contact zone"

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Behera, Bikash Chandra. "Some investigations on the turning of inconel 718 and modeling for cutting forces." Thesis, 2018. http://localhost:8080/iit/handle/2074/7578.

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Book chapters on the topic "Dual contact zone"

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Gunn, Geoffrey C. "The Ryukyu Trade Networks Revisited." In Imagined Geographies. Hong Kong University Press, 2021. http://dx.doi.org/10.5790/hongkong/9789888528653.003.0010.

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It appears improbable but for several centuries corresponding to the European Middle Ages or the early Ming period in China, the Ryukyu Islands came to play a central role in connecting China to a range of Southeast Asian ports and polities. Commencing around 1373 the Kingdom began mounting complementary voyages to China, Japan, and Korea and so indirectly connected these polities with the Southeast Asia trade in tropical zone products. An important feature of the Ryukyu trade was its royal monopoly status. The Ryukyu connection with Ming China also fitted into the classic pattern of tribute t

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Semenets, Sergii, and Larysa Semenets. "INNOVATIVE TECHNOLOGIES IN MATHEMATICS EDUCATION." In Modern science: prospects, innovations and technologies. Publishing House “Baltija Publishing”, 2024. http://dx.doi.org/10.30525/978-9934-26-473-3-29.

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The introduction of the competence model of Mathematics education involves the actualization of personal and activity factors of development of subjects of the educational process, development and scientific justification of innovative teaching technologies. The subject of the studyis innovative technologies of personality development in Mathematics education. Thepurpose of the study is to create, scientifically and theoretically substantiate as well as experimentally verify the innovative technologies of personality development in Mathematics education. Research methodology. To achieve the go

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Conference papers on the topic "Dual contact zone"

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Martinez, Maryvi Y., Dicky Trisnadi, Kevin Michael, and Mohammed Salawu. "Enhancing Reservoir Contact in Clinoform Structure: A Geosteering Approach." In GOTECH. SPE, 2024. http://dx.doi.org/10.2118/219281-ms.

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Abstract Addressing challenges in well planning and execution within the Northern part of Reservoir A involves complexities arising from Clinoform structures with variable bed thickness, porosity differences, and notable permeability contrasts. This has led to the subdivision of Zone N into two distinct subzones: N (upper, with moderate to high permeability) and No (lower, exhibiting poor rock quality). Efficiently developing reserves in No requires overcoming connectivity issues and low permeability. The development strategy involves drilling horizontal wells with dual string completion in Zo

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Fakhri, Rafi, Okky Yuditya Pahlevi, Hendra Himawan, and Anton Hilman Saputra. "Dealing with Foraminiferal Reservoir Complexity: A Dual-Contact Mechanism in DA Gas Field, Madura Strait, Indonesia." In GOTECH. SPE, 2025. https://doi.org/10.2118/224638-ms.

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Abstract The development drilling campaign in DA Gas Field, Madura Strait PSC has been completed. Therefore, updating the reserve estimates is prioritized task as a guideline for production monitoring, allocation, and reservoir management. By integrating exploration data, it was found that each well has a different Gas-Water Contact (GWC). A comprehensive study should be conducted to determine the most suitable contact and generate a reliable OGIP estimate corresponding to the initial foraminiferal reservoir condition. The identification of hydrocarbon contact involved integrating direct forma

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Manuaba, I. B. G. H., M. Berkane, A. M. Ali, and M. Charupa. "Real-Time Reservoir Characterization: The Identification of Sweet Spots Through New Measurement." In International Petroleum Technology Conference. IPTC, 2025. https://doi.org/10.2523/iptc-25023-ms.

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Abstract Re-evaluating brownfield sweet-spots is a strategic move in the oil and gas industry aimed at unlocking reservoir potential and extending the productive life of existing assets. This provides economic benefits and minimizes the need for new exploration and development activities. Saturation profiling in water flooded reservoir that undergo active water injection is a major challenge. Fingering of injected water complicates saturation determination efforts because miscibility of injected and formation water results in salinity alteration. Another uncertainty is related to depletion, wh

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Yang, Bin, Min Chao Nie, Hong Shen, et al. "Newly-Developed Visualized Reservoir Characterization While Drilling Technology Improves Understanding of Complex Channel Sand, Assists EOR in a Mature Oilfield in Bo Hai Bay." In Offshore Technology Conference Asia. OTC, 2022. http://dx.doi.org/10.4043/31440-ms.

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Abstract PLxx oilfield is a mature oilfield which has been developed by horizontal wells for several years with water-injection production style. It features with shallow, complex, high challenging unconsolidated channel sand with lateral property variation due to pinch out, stacking or lamination. The thickness of pay zone changes from couple of to ten more meters which brings much high challenge to reservoir delineation while drilling and horizontal well placement execution. The oilfield locates at a faulted belt of Bo Hai Bay among which some small faults may happen. But it's difficult to b

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Popovici, Violeta, Laura Bucur, Verginica Schroder, Aureliana Caraiane, and Victoria Badea. "STUDIES ON THE CYTOTOXIC POTENTIAL OF THE EXTRACT OF USNEA BARBATA (L.) F.H.WIGG." In NORDSCI International Conference. SAIMA Consult Ltd, 2020. http://dx.doi.org/10.32008/nordsci2020/b1/v3/29.

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Usnea barbata (L.) F.H.Wigg. is a fruticose lichen widespread in coniferous forests in the temperate zone of Europe and North America. The special dual structure of lichens, the result of the symbiosis between a fungus and an alga / cyanobacteria and the specific conditions in which they live, determine the synthesis of many special organic compounds - secondary metabolites - which ensure optimal protection against disturbing physical and biological factors. The present study aims to evaluate the cytotoxic activity of the extract of Usnea barbata (L.) F H Wigg. The cytotoxic activity was evalu

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Prasun, Samir, and Andrew K. Wojtanowicz. "Probabilistic Estimation of Recovery From Naturally Fractured Bottom-Water Reservoir With Uncertain Well Placement in Fracture Network." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-96836.

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Abstract In conventional reservoirs with bottom-water and no natural fractures, recovery can be predicted from known designed well spacing and completion placement. However, in naturally-fractured reservoirs (NFR), there is a considerable intrinsic uncertainty of such predictions because well’s completions may randomly intercept fractures (fracture-well) or be accidently placed in the matrix blocks (matrix-well) of NFR. Moreover, the recovery prediction is even more difficult when dual-completed wells with downhole water sink (DWS) are used for water coning control — with a second completion p

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Aikman, M. J. L., M. Mabrook, X. Jing, and H. Al Hammadi. "Dual Ring Injection Fence Technology: A Novel Method to Optimally Co-Develop Hydrocarbon Reservoirs with Free Gas Caps Over Producing Oil Zones." In ADIPEC. SPE, 2023. http://dx.doi.org/10.2118/216586-ms.

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Abstract To develop oil fields with significant gas caps, some operators have utilized a water injection fence to be able to co-develop the gas cap and the oil leg. ADNOC is preparing to co-develop the gas cap and oil legs of many of its giant oil reservoirs by drilling horizontal water injection wells at the current gas oil contact, separating the gas cap from the oil leg. This allows co-production of both the gas cap and the oil leg. However, the use of a water injection fence can lead to a loss in hydrocarbon recovery (oil, gas and condensate) when water invades both the oil leg and the gas

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Li, Jianing, Mahmoud Hamza, Arul Kumaran, Umesh Bhayaraju, and San-Mou Jeng. "Study of Development of a Novel Dual Phase Airblast Injector for Gas Turbine Combustor." In ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/gt2016-56340.

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A novel airblast injector is designed for gas turbine combustors. Unlike standard pressure swirl and prefilming/non-prefilming air blast atomizers, the novel injector is designed to improve the fuel injection delivery to the injector and improve atomization of the fuel by using a porous stainless steel tube. There are three swirling air streams in the injector. The liquid fuel is injected through the porous tube, with 7 micron porosity, between the swirling air streams, viz. an inner swirling air through the tube and the other two swirling air streams merging downstream of the tube. The swirl

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Zhang, Yang, Yan Qiao, Shiling Zhang, et al. "New Understanding of Matrix-Fracture Dual Media Reservoir Damage Based on Pressure-Controlled Fracturing." In 58th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2024. http://dx.doi.org/10.56952/arma-2024-0188.

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ABSTRACT: The Tarim Oilfield Krasu tectonic zone is deeply burial, high temperature, low porosity and permeability, and constitutes the complex matrix-fracture dual media seepage channels. Reservoir damage evaluation for such reservoirs is important for subsequent development. In this study, we firstly processed the fracture network in the reservoir core by controlled-pressure fracturing to improve the fracture tortuosity, and verified the reasonableness of this method by CT scanning and shape factor calculation. Then, based on the dual-media condition, we establish the water/oil-lock damage e

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Evro, Solomon, Adnan Alshamali, Fahad AL-Faresi, et al. "Ervoir Simulation Evaluation of Cyclic Steam Stimulation Strategies in Tayarat Carbonate Heavy Oil Reservoir." In Middle East Oil, Gas and Geosciences Show. SPE, 2023. http://dx.doi.org/10.2118/213442-ms.

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Abstract The Tayarat formation extends over a large area; this formation has a diverse and complex geology and has heavy oil fluid system. A previous review of the analogous technologies that apply to the Tayarat heavy oil formation shows that it would be economically impossible to deploy a single reservoir development technology in all the areas of the field. In this project, we evaluated cyclic steam stimulation strategies focusing on applying different well completions. We have applied a compositional numerical simulation model using CMG Stars to investigate the application of different cyc

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