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Auteur Mustafa Moussaoui |
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Affiner la recherche Interroger des sources externesEtude et modelisation de la resistance a la rupture sur des eprouvettes entaillees / Mustafa Moussaoui
Titre : Etude et modelisation de la resistance a la rupture sur des eprouvettes entaillees Type de document : texte imprimé Auteurs : Mustafa Moussaoui, Auteur ; Salim Meziaini, Directeur de thèse Editeur : constantine [Algérie] : Université Constantine 1 Année de publication : 2015 Importance : 124 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Génie MécaniqueTags : Construction mécanique Approche volumétrique gradient relatif contrainte effective Entaille zone plastique Volumetric approach Relative gradient Effective stress Notch Plastic zone المنهج الحجمي التدرج النسبي الأجهاد الفعال الثلمة المنطق البلاستيكية Index. décimale : 620 Génie Mécanique Résumé : The presence of geometric discontinuities in mechanical components induces a non-uniform stresses distribution. These discontinuities locally generate stress concentrations which can therefore cause premature failure if it is not properly taken into account in the design of the mechanical components. The parameters undergo variations going to the ruin of mechanical systems or structures. To take into account the factors that come into play, a study was carried out to analyze the variation of the
angle and radius of notch on the notch stress intensity factor r I K and the plastic region in the vicinity of notch root.
A specimen CT made in steel with different notch under a uniform tensile loading has been considered as finite element model. The considered approach is a local approach defined by the volumetric approach. The parameters of the volumetric approach i.e. the effective distance, effective stress and relative stress gradient are calculated from the finite element method under Castem software. Application of the
volumetric approach in the case of elastoplastic behaviour has made it possible to realize the changing effect of the notch parameters. The results obtained are confronted to the models of Irwin and Creager - Paris.
Diplôme : Doctorat en sciences En ligne : ../theses/gmecanique/MOU6703.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=9920 Etude et modelisation de la resistance a la rupture sur des eprouvettes entaillees [texte imprimé] / Mustafa Moussaoui, Auteur ; Salim Meziaini, Directeur de thèse . - constantine [Algérie] : Université Constantine 1, 2015 . - 124 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Génie MécaniqueTags : Construction mécanique Approche volumétrique gradient relatif contrainte effective Entaille zone plastique Volumetric approach Relative gradient Effective stress Notch Plastic zone المنهج الحجمي التدرج النسبي الأجهاد الفعال الثلمة المنطق البلاستيكية Index. décimale : 620 Génie Mécanique Résumé : The presence of geometric discontinuities in mechanical components induces a non-uniform stresses distribution. These discontinuities locally generate stress concentrations which can therefore cause premature failure if it is not properly taken into account in the design of the mechanical components. The parameters undergo variations going to the ruin of mechanical systems or structures. To take into account the factors that come into play, a study was carried out to analyze the variation of the
angle and radius of notch on the notch stress intensity factor r I K and the plastic region in the vicinity of notch root.
A specimen CT made in steel with different notch under a uniform tensile loading has been considered as finite element model. The considered approach is a local approach defined by the volumetric approach. The parameters of the volumetric approach i.e. the effective distance, effective stress and relative stress gradient are calculated from the finite element method under Castem software. Application of the
volumetric approach in the case of elastoplastic behaviour has made it possible to realize the changing effect of the notch parameters. The results obtained are confronted to the models of Irwin and Creager - Paris.
Diplôme : Doctorat en sciences En ligne : ../theses/gmecanique/MOU6703.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=9920 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité MOU/6703 MOU/6703 Thèse Bibliothèque principale Thèses Disponible
