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Relevant bibliographies by topics / Compression de dynamique

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Journal articles

Academic literature on the topic 'Compression de dynamique'

Author: Grafiati

Published: 23 March 2023

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Journal articles on the topic "Compression de dynamique"

1

Viot, Philippe, and Florent Beani. "Comportement de mousses polymères en compression dynamique." Revue des composites et des matériaux avancés 13, no. 3 (2003): 283–92. http://dx.doi.org/10.3166/rcma.13.283-292.

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2

Baraka, Abdelhak, Mohammed Matallah, Mustapha Djafour, and Mokhtar Bouazza. "Caractérisation des effets régissant le comportement dynamique du béton." Matériaux & Techniques 106, no. 5 (2018): 502. http://dx.doi.org/10.1051/mattech/2018043.

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La description du comportement du béton sous chargements dynamiques (explosions, collisions, séismes…) fait actuellement l’objet de nombreux travaux de recherches. Bien que la modélisation reste complexe pour ce matériau à cause de la présence simultanée de plusieurs phénomènes (l’endommagement, les effets d’inertie et de viscosité, la fissuration…), un bon nombre d’approches ont été proposé en associant ces phénomènes (endommagement (Pedersen et al., Eng. Fract. Mech. 75, 3782 (2008) [1]), viscosité (Bazant et al., J. Eng. Mech. ASCE 126(9), 971 (2000a); Bazant et al., J. Eng. Mech. ASCE 126(9), 962 (2000b) [2,3])…, effet d’inertie (Reinhardt & Weerheijm, Int. J. Fract. 51, 31 (1991) [4])). Avec une loi d’endommagement, ce travail formule une description du comportement dynamique du béton en traction et en compression. Fondée sur des concepts physiques (la rigidité non linéaire endommageable associée à la déformation, la viscosité, l’inertie associée à l’accélération et la rupture par résonance), cette loi décrit l’évolution de ces différents effets intervenants lors d’un chargement dynamique du matériau. Enfin, sous la lumière des résultats, l’article propose une interprétation physique à la rupture par écaillage qui apparaît dans le béton surtout sous des charges impulsionnelles en traction (un plan de rupture droit, qui passe parfois à travers les granulats).

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3

Michel, P., P. Finet, and C. Raftopoulos. "Compression médullaire cervicale sur manœuvre dynamique par deux neurofibromes C2." Neurochirurgie 63, no. 1 (2017): 62. http://dx.doi.org/10.1016/j.neuchi.2016.11.091.

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4

Guezzi-Messaoud, Fadoua, Antoine Dupret, Arnaud Peizerat, and Yves Blanchard. "Capteur d’images à grande dynamique et compression intégrée pour technologie 3D." Traitement du signal 30, no. 6 (2013): 343–65. http://dx.doi.org/10.3166/ts.30.343-365.

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5

Rastel, D., and B. Lun. "Vers une meilleure compréhension de la compression dynamique en médecine vasculaire." Journal des Maladies Vasculaires 30, no. 4 (2005): 34. http://dx.doi.org/10.1016/s0398-0499(05)86302-4.

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6

Rastel, D., and B. Lun. "P27 - Vers une meilleure compréhension de la compression dynamique en médecine vasculaire." Journal des Maladies Vasculaires 30, no. 4 (2005): 48. http://dx.doi.org/10.1016/s0398-0499(05)86331-0.

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7

Veilleux, Mario, and René Tinawi. "Comportement dynamique d'une éolienne à axe vertical (application pratique)." Canadian Journal of Civil Engineering 15, no. 3 (1988): 369–81. http://dx.doi.org/10.1139/l88-052.

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The dynamic behaviour of the vertical axis wind turbine of the ÉOLE Project is examined using a special purpose program developed for extracting the complex frequencies and mode shapes of the structure. The precise evaluation of the frequencies is an important step in the design process, to detect any dynamic instabilities of the rotor for a given speed. Gyroscopic effects and geometric nonlinearities due to centrifugal and gravity forces as well as the vertical compression due to the tension of the guys are also considered. Nonlinear behaviour of the guys is also accounted for. The influence of the variation in the stiffness of the guys on the dynamic behaviour is examined specifically for the ÉOLE Project. Results indicate that this effect is not important if the initial tension in the guy is high. Key words: Vertical axis wind turbines, guys, complex frequencies, complex mode shapes, centrifugal forces, Coriolis forces, Campbell diagrams, numerical software.

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8

Boussakri, Hassan, Abdelhalim Elibrahimi, Mohammed Bachiri, et al. "Treatment Results Of Diaphyseal Forearm Fractures With Dynamique Compression Plate A Retrospective study of 156 Cases." International Journal of Medicine and Surgery 2, no. 2 (2015): 36–39. http://dx.doi.org/10.15342/ijms.v2i2.51.

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This retrospective study addresses a series of 156 cases of forearm fractures. These 156 cases were managed in the trauma-orthopedic department (B4) of Fez University Hospital, Morocco, from May 2008 till January 2013. The purpose of this study is to analyze epidemiological and clinical factors of diaphyseal forearm fractures and the results of their treatment with dynamic compression plate (DCP), as well as the complications and therapeutic errors of this surgical technique. The frequency of hospitalization in the trauma-orthopedic department was 3,96%. Ages ranged between 16 and 83, the average age was 32. 132 patients were male (85%). 90% were managed at the day of trauma. Traffic accidents were the most frequent cause in 52% patients. The fracture was in the left forearm in 65% of patients. 53% of fracture lines were in the middle third of the forearm. 38 fractures were open, and 30 were admitted for polytrauma. Osteosynthesis was performed with dynamic compression plate for all patients. In comparison with the literature, our series shows the predominance of young male patients, with traffic accidents being the cause. Osteosynthesis with dynamic compression plate remains the treatment of choice that provides satisfactory results if the accuracy in this technique was respected.

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9

Veilleux, Mario, and René Tinawi. "Comportement dynamique d'une éolienne à axe vertical (développement théorique)." Canadian Journal of Civil Engineering 15, no. 3 (1988): 355–68. http://dx.doi.org/10.1139/l88-051.

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Complex frequencies and mode shapes are evaluated and presented for a guyed vertical axis wind turbine to detect any dynamic instability for a given speed of rotation. The equations of motion are developed in the rotating system of axes of the rotor to eliminate the time dependent terms. These equations take into account gyroscopic effects by evaluating the Coriolis and Circulatory (softening) matrices. The guys are replaced by nonlinear springs. The geometric stiffness matrix is also considered by performing a nonlinear static analysis that includes centrifugal effects and gravity loads, as well as compression from the vertical component of the guys. A reduction of the dynamic degrees of freedom is performed using the Rayleigh–Ritz technique. The complex frequencies and mode shapes are obtained using the QR algorithm. A program developed on a microcomputer was used to evaluate the dynamic instabilities of the ÉOLE Project. These results are described in the following paper. Key words: Vertical axis wind turbines, guys, complex frequencies, complex mode shapes, centrifugal forces, Coriolis forces, numerical software.

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10

Kabore, C., and J. F. Kaux. "Les effets de la compression externe dynamique péristaltique type Normatec sur la récupération sportive." Science & Sports 32, no. 5 (2017): 266–77. http://dx.doi.org/10.1016/j.scispo.2017.04.012.

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