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Готові списки джерел за темами / Multicontact systems

Добірка наукової літератури з теми "Multicontact systems"

Автор: Grafiati

Опубліковано: 1 червня 2024

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Статті в журналах
Дисертації
Частини книг
Тези доповідей конференцій

Статті в журналах з теми "Multicontact systems":

1

Radjai, Farhang. "Multicontact dynamics of granular systems." Computer Physics Communications 121-122 (September 1999): 294–98. http://dx.doi.org/10.1016/s0010-4655(99)00337-9.

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2

Carpentier, Justin, and Nicolas Mansard. "Multicontact Locomotion of Legged Robots." IEEE Transactions on Robotics 34, no. 6 (December 2018): 1441–60. http://dx.doi.org/10.1109/tro.2018.2862902.

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3

Nekrasov, A. Ya, M. O. Arbuzov, and A. N. Sobolev. "Automatic control of the static loads in multicontact mechanical systems." Russian Engineering Research 35, no. 6 (June 2015): 442–46. http://dx.doi.org/10.3103/s1068798x1506012x.

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4

Khlus, V. A., and A. V. Dyomin. "Thermal fluctuations in multicontact Josephson granular systems and ac magnetic susceptibility." Physica C: Superconductivity 185-189 (December 1991): 2441–42. http://dx.doi.org/10.1016/0921-4534(91)91345-5.

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5

Al-Wahaibi, Y. M., and A. K. Al-Hadhrami. "Oil Recovery Mechanisms via Multicontact Miscible Gas Injection Process within Lensed Systems." Petroleum Science and Technology 27, no. 15 (October 21, 2009): 1744–56. http://dx.doi.org/10.1080/10916460802637163.

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6

Del Prete, Andrea, Steve Tonneau, and Nicolas Mansard. "Zero Step Capturability for Legged Robots in Multicontact." IEEE Transactions on Robotics 34, no. 4 (August 2018): 1021–34. http://dx.doi.org/10.1109/tro.2018.2820687.

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7

Vinogradov, Aleksandr Vladimirovich, Alina Vasilevna Vinogradova, and Aleksandr Aleksandrovich Lansberg. "Advanced method of encoding situations in the electric network containing multicontact switching systems." Vesti vysshikh uchebnykh zavedenii Chernozem'ya, no. 1 (2021): 12–30. http://dx.doi.org/10.53015/18159958_2021_1_12.

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8

Dindoruk, Birol, Russell Johns, and Franklin M. Orr. "Measurement and Modeling of Minimum Miscibility Pressure: A State-of-the-Art Review." SPE Reservoir Evaluation & Engineering 24, no. 02 (February 10, 2021): 367–89. http://dx.doi.org/10.2118/200462-pa.

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Summary This paper gives a critical review of miscibility-measurement techniques published in the open literature along with recommendations and lessons learned. Many of these published methods violate the inherent assumptions for multicontact miscibility (MCM). The confusion often arises from a failure to distinguish between first-contact miscibility (FCM), in which two fluids can be mixed in all proportions without forming two phases, and MCM, in which fluid compositions that arise during the flow of two phases in a porous medium approach a specific critical point within the constraints of the MCM definition. There are many analytical, numerical, correlational, and experimental methods available to estimate the minimum miscibility pressure (MMP) for MCM flow. The numerous available methods, some of which are quite inexpensive, have caused significant misunderstandings in the literature and in practice regarding their ability to estimate MMP. Our experience has shown that the best methods are those that honor the multicontact process (MCM), in which flow interacts with phase behavior in a prescribed way. Good methods that achieve this are slimtube experiments, detailed slimtube simulations, multiple-mixing-cell calculation methods, and the method of characteristics (MOC). Techniques such as the rising-bubble-apparatus (RBA) and vanishing-interfacial-tension (IFT) (VIT) experiments are subject to significant uncertainties, although they can still provide useful information. Numerous MMP correlations have been developed. They should be used with caution for systems similar to those used to develop the correlation. Use for other fluid systems can lead to significant errors. We discuss the advantages and disadvantages of most current methods and show that various combinations of methods can reduce uncertainty.

9

Lorensu, Pedro Javier Perez, Helena Perez Perez, Domingo Navajas Carasa, and Victor Manuel Garcia Marin. "P164 Utility of multicontact cylindrical subdural soft electrodes in electrocorticography for epilepsy surgery." Clinical Neurophysiology 119 (May 2008): S112. http://dx.doi.org/10.1016/s1388-2457(08)60435-6.

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10

Alart, Pierre, Michael Barboteu, and Mathieu Renouf. "Parallel Computational Strategies for Multicontact Problems: Applications to Cellular and Granular Media." International Journal for Multiscale Computational Engineering 1, no. 4 (2003): 419–30. http://dx.doi.org/10.1615/intjmultcompeng.v1.i4.70.

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Дисертації з теми "Multicontact systems":

1

Omar, Farah Samatar. "Modélisation multiphysique des roulements à billes par la Méthode des Éléments Discrets en régime Élasto-Hydro-Dynamique." Electronic Thesis or Diss., Amiens, 2022. http://www.theses.fr/2022AMIE0059.

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Le travail réalisé dans le cadre de cette thèse a contribué au développement d'un outil numérique dédié à la simulation des roulements à billes en conditions de service Elasto-Hydro-Dynamiques (EHD). Une modélisation originale, adaptée à ces organes de guidage en rotation, est donc mise en œuvre dans le cas des roulements à billes à contact radial SKF 6208 et à contact oblique SKF 7208. De par leur caractère multi-contact, les deux roulements sont modélisés par la Méthode des Eléments Discrets, avec une formulation hertzienne du contact elliptique pour déterminer les interactions billes/pistes de roulement et déformations aux contacts. En considérant, dans un premier temps, des indicateurs standards, à la fois cinématiques et dynamiques, les modèles discrets de roulements à billes 6208 et 7208, sont testés puis validés en conditions statiques et dynamiques. L'implémentation, dans un deuxième temps, d'un modèle rhéologique piézo-visco-élastique du lubrifiant a, quant à elle, contribué à mettre en évidence l'influence du pilotage en vitesse, du chargement imposé, ou encore, du jeu diamétral sur le régime de lubrification du roulement. Le couplage, dans un troisième temps, des propriétés rhéologiques et diélectriques du lubrifiant a permis de montrer la pertinence de la réponse électrique du roulement, en particulier pour l'identification de son régime de lubrification. En effet, la corrélation de l'épaisseur de film fluide à sa capacitance électrique s'est révélée un bon indicateur de l’état du contact lubrifié. Cette corrélation est corroborée par une bonne adéquation des prédictions numériques, obtenues avec le modèle discret de roulement à billes à contact radial 6208, et résultats expérimentaux issus de la littérature. En conclusion, la capacitance électrique du contact lubrifié est un indicateur fiable, pouvant être utilisé comme moyen de prédiction du régime de lubrification pour assurer une durée de vie optimale au roulement
During this PhD thesis, we have focused on a digital tool for modeling ball bearing operating under elstohydrodynamic (EHD) regime. Based on an original description involving the discrete element method (DEM), the developed digital tool integrates all the components of ball bearings and enables realistic behavior under mechanical loading and kinematic conditions. Two models of ball bearings were considered and simulated with the digital tool, namely SKF 6208 radial contact ball bearing and SKF 7208 angular contact ball bearing. In order to check the standard indicators recommended by most ball bearing manufactures, a stiffness model for elliptical hertzian contact and an improved EHD formulation for lubricated contact are implemented in the discrete model of ball bearings. In addition, we have introduced into the discrete modeling an electrical capacitance model coupling rheological and dielectric properties of the lubricant with the Hertz's pressure at the contact between the ball and the raceways. The numerical predictions of lubricant film capacitance provided by numerical simulations are in good accordance, both qualitatively and quantitatively, with the experimental data available in the literature. The combination of the discrete modeling and the electrical approach enables efficient solutions to be provided in terms of lubrication regime in relation to the lubricant properties to optimize the bearing lifetime

Частини книг з теми "Multicontact systems":

1

Dichev, Christo. "Multicontext systems with importing contexts." In Artificial Intelligence: Methodology, Systems, and Applications, 209–20. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/bfb0057446.

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2

ALART, Pierre. "Calcul intensif en mécanique multicontact : de l’élastostatique à la dynamique granulaire." In Modélisation numérique en mécanique fortement non linéaire, 53–85. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9081.ch2.

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Cet article synthétise quelques travaux menés au LMGC, depuis une vingtaine d'années, sur le calcul intensif dédié aux problèmes de mécanique impliquant un grand nombre de contacts. Les situations considérées vont de l'équilibre de systèmes de corps déformables, modélisés en éléments finis, à la dynamique de solides rigides constituant un milieu granulaire.

Тези доповідей конференцій з теми "Multicontact systems":

1

Carpentier, Justin, Rohan Budhiraja, and Nicolas Mansard. "Learning Feasibility Constraints for Multicontact Locomotion of Legged Robots." In Robotics: Science and Systems 2017. Robotics: Science and Systems Foundation, 2017. http://dx.doi.org/10.15607/rss.2017.xiii.031.

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2

Rückwald, Tobias, Alexander Held, and Robert Seifried. "Reduced Isogeometric Analysis Models for Impact Simulations." In ASME 2021 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/detc2021-67417.

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Abstract Detailed impact simulations in flexible multibody systems are usually based on isoparametric finite element models. For modeling the dynamics of an impact, a precise representation of the geometry is essential. However, isoparametric finite elements involve the discretization of the geometry. This work tests the isogeometric analysis (IGA) as an alternative approach in flexible multibody systems. The IGA enables the exact representation of the geometry by using non-uniform rational basis splines (NURBS) as element shape functions. In the context of an efficient impact simulation a model reduction and a possible inclusion of the floating frame of reference formulation is beneficial. The degrees of freedom of the flexible bodies are reduced using component mode synthesis to save computation time in the multibody simulation. For the precise description of deformations and stresses in the contact area as well as elastodynamic effects, a large number of global shape functions is required. As testing examples, the impact of two elastic spheres and a multibody multicontact problem including wave propagation in a long elastic rod are simulated and compared to reference solutions.

3

Zaskoka, Anton. "Interrupted mode of boundary friction in multicontact tribological system." In 2017 IEEE 7th International Conference "Nanomaterials: Application & Properties" (NAP). IEEE, 2017. http://dx.doi.org/10.1109/nap.2017.8190392.

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4

Celdran, Alberto Huertas, Manuel Gil Perez, Felix J. Garcia Clemente, and Gregorio Martinez Perez. "MASTERY: A multicontext-aware system that preserves the users' privacy." In 2016 IEEE/IFIP Network Operations and Management Symposium (NOMS). IEEE, 2016. http://dx.doi.org/10.1109/noms.2016.7502853.

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