18 résultats avec le mot-clé: 'study self loosening bolted joints excited dynamic axial'
In the first stage of loosening process (the first 100 cycles of excitation), for the PTFE/MoS 2 coated bolts, a large number of asperities on the contact
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11 Tribological phenomena of threads contacts during the tightening process: a beginning of third-body extrusion, b formation of clusters of particles, c interfacial behavior
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Most of the previous experimental studies on self-loosening of bolted joints have been performed with a test machine known as Junker Machine which uses a conventional load cell and
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Analysis of longitudinal stresses through critical paths shows that the effect of high preload is beneficial due to the reduction of hydrostatic pressure and shear stress amplitude,
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Most of the models built to study the self-loosening of bolts concentrate only on the screw, the nut being modeled as a threaded insert ([2, 3, 13]). This movement might deform
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A contact constraint with Coulomb friction was ap- plied to the surfaces likely to slip: between the upper plate and the screw head, between the two plates, between the lower plate
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Moreover, as the trapped nanorods are orientated parallel to the fibre axis, the two available spectral recording directions through the microscope objective and the trapping
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boulonnées soumis à un moment fléchissant et un effort normal Bolted circular flange joints under bending moment and axial force. TECHNIQUE
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In this paper, we study the optimal placement and optimal number of base stations added to an existing wireless data network through the interference gradient method.. This
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Certaines musiques sont composées pour des occasions particulières :Musique de scène (théâtre, cirque, de danse), de film, militaire, marches funèbres, marches
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Deux autres virus ont été décrits dernièrement montrant des propriétés similaires: Le ranunculus white mottle en et le Tulip mild mottle mosaic au Japon, avec des
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La fonction phi appelée indicatrice d'Euler est la fonction qui à tout entier naturel n non nul associe le nombre d'entiers compris entre 1 et n (inclus) et premiers avec n...
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Literature about study of bolted elements representation [6], Bolted Flanged Joints (BFJ) [7], and even thermal shock effect on tightening in BFJ is quite plethoric [8], but they do
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Different designs of bolted joints are used in the junction technology of actuator body/valve body (cf. operating on an aircraft), damages appear in bolted joints
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PRIE le Directeur général de faire rapport à la cinquante-neuvième session du Conseil exécutif et à la Trentième Assemblée mondiale de la Santé sur l'assistance octroyée à ces
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Dans l’ex du stage, ajouter différence entre stage proposé par entreprise et stage proposé par étudiant. Même description d’une
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Le -calcul se trouve donc dans une situation embarrassante : une stratégie externe est sûre, mais inefficace, tandis qu'une stratégie interne stricte conduit
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However, for high value of preload, this simple theory is not sufficient as the bending of the bolt shank induces a contact of the shank on its hole, which reduces the sliding
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