Détail de l'auteur
Auteur Mohamed-Salah Mecibah |
Documents disponibles écrits par cet auteur (4)
Affiner la recherche Interroger des sources externesEtude du comportement statique et dynamique de la transmission de la boite de transfert fabriquée à ALEMO. / Salim Selami
Titre : Etude du comportement statique et dynamique de la transmission de la boite de transfert fabriquée à ALEMO. Type de document : texte imprimé Auteurs : Salim Selami, Auteur ; Mohamed-Salah Mecibah, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2019 Importance : 106 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Génie MécaniqueTags : G. Mécanique: Construction mécanique Engrenages Erreurs de transmission Défaillance boite de transfert Fissuration Gears Transmission Errors Failure transfer box Crack propagation المسننات أخطاء نقل الحركة الأعطاب علبة نقل الحركة التشقق Index. décimale : 620 Génie Mécanique Résumé : Gearboxes and transfer gearboxes case are often critical components of the machine requiring the application of monitoring techniques. Control and diagnosis are important today in most industrial sectors. They consist of measuring physical signals on machines and industrial installations, and then, thanks to their analysis, it is a question of providing a diagnosis of their mechanical state. Product quality control is also part of the same approach and methods and tools for analyzing signals. The use of vibratory signals is relevant because we can understand the dynamic phenomena that we encounter in operating systems (rotating machines, structures ...). The method used to extract and identify the type of defects is escribed in this work. It is shown that this experimental setup provides a good illustration of the practical applications of the basic theory included in vibration analysis and condition monitoring.
Diplôme : Doctorat en sciences En ligne : ../theses/gmecanique/SEL7497.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11329 Etude du comportement statique et dynamique de la transmission de la boite de transfert fabriquée à ALEMO. [texte imprimé] / Salim Selami, Auteur ; Mohamed-Salah Mecibah, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2019 . - 106 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Génie MécaniqueTags : G. Mécanique: Construction mécanique Engrenages Erreurs de transmission Défaillance boite de transfert Fissuration Gears Transmission Errors Failure transfer box Crack propagation المسننات أخطاء نقل الحركة الأعطاب علبة نقل الحركة التشقق Index. décimale : 620 Génie Mécanique Résumé : Gearboxes and transfer gearboxes case are often critical components of the machine requiring the application of monitoring techniques. Control and diagnosis are important today in most industrial sectors. They consist of measuring physical signals on machines and industrial installations, and then, thanks to their analysis, it is a question of providing a diagnosis of their mechanical state. Product quality control is also part of the same approach and methods and tools for analyzing signals. The use of vibratory signals is relevant because we can understand the dynamic phenomena that we encounter in operating systems (rotating machines, structures ...). The method used to extract and identify the type of defects is escribed in this work. It is shown that this experimental setup provides a good illustration of the practical applications of the basic theory included in vibration analysis and condition monitoring.
Diplôme : Doctorat en sciences En ligne : ../theses/gmecanique/SEL7497.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11329 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité SEL/7497 SEL/7497 Thèse Bibliothèque principale Thèses Disponible
Titre : Etude et modélisation de la propagation des fissures sous chargement thermique cyclique. Type de document : texte imprimé Auteurs : Leila Khammar, Auteur ; Mohamed-Salah Mecibah, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 119 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Génie MécaniqueTags : Construction Mécanique Disque de frein Thermomécanique Fatigue fissure elliptique simulation numérique Brake disc Thermomechanics elliptical crack numerical simulation قرص الفرامل الميكانيكا الحرارية التعب الشق الاهليجي المحاكاة الرقمية Index. décimale : 620 Génie Mécanique Résumé : The purpose of this thesis is to present a study of the cyclic thermal behavior of crack propagation by taking the automobile brake disc as an example of a study for the prediction of their fatigue behavior. The numerical calculation strategy is based on the Ansys .15 calculation code. The latter, which is based on the finite element method and which has frictional contact management algorithms, is used to simulate in the application of braking the behavior of the mechanism despite its complexity.
At first, a purely thermal study is presented whose purpose is to calculate the initial heat flux entering the disc, then the mechanical study allowed us to calculate the hydraulic pressure, then a modeling of the loading and boundary conditions applied to the disk and the pads. A numerical approach was also performed based on the finite element method. A cyclic thermal study on the one hand, and a cyclical hermomechanical study on the other hand, were first put in place, allowing us to better understand the influence of the thermal flow and the hydraulic pressure on the propagation in width and depth of the elliptical fissure quite comparable to that linear. Finally, a three-dimensional approach, with a crack remaining elliptical during propagation, resulted in a prediction of fatigue strength.Diplôme : Doctorat en sciences En ligne : ../theses/gmecanique/KHA7437.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11176 Etude et modélisation de la propagation des fissures sous chargement thermique cyclique. [texte imprimé] / Leila Khammar, Auteur ; Mohamed-Salah Mecibah, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2018 . - 119 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Génie MécaniqueTags : Construction Mécanique Disque de frein Thermomécanique Fatigue fissure elliptique simulation numérique Brake disc Thermomechanics elliptical crack numerical simulation قرص الفرامل الميكانيكا الحرارية التعب الشق الاهليجي المحاكاة الرقمية Index. décimale : 620 Génie Mécanique Résumé : The purpose of this thesis is to present a study of the cyclic thermal behavior of crack propagation by taking the automobile brake disc as an example of a study for the prediction of their fatigue behavior. The numerical calculation strategy is based on the Ansys .15 calculation code. The latter, which is based on the finite element method and which has frictional contact management algorithms, is used to simulate in the application of braking the behavior of the mechanism despite its complexity.
At first, a purely thermal study is presented whose purpose is to calculate the initial heat flux entering the disc, then the mechanical study allowed us to calculate the hydraulic pressure, then a modeling of the loading and boundary conditions applied to the disk and the pads. A numerical approach was also performed based on the finite element method. A cyclic thermal study on the one hand, and a cyclical hermomechanical study on the other hand, were first put in place, allowing us to better understand the influence of the thermal flow and the hydraulic pressure on the propagation in width and depth of the elliptical fissure quite comparable to that linear. Finally, a three-dimensional approach, with a crack remaining elliptical during propagation, resulted in a prediction of fatigue strength.Diplôme : Doctorat en sciences En ligne : ../theses/gmecanique/KHA7437.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11176 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité KHA/7437 KHA/7437 Thèse Bibliothèque principale Thèses Disponible
Titre : Modélisation de calcul des roues d'échange dans une transmission mécanique par engrenage Type de document : texte imprimé Auteurs : Mohamed-Salah Mecibah ; Univ. de Constantine, Éditeur scientifique ; Hamlaoui Boughouas, Directeur de thèse Année de publication : 2010 Importance : 122 f. Note générale : 01 Disponible à la salle de recherche 01 Disponible au magazin de la B.U.C. 01 CD Langues : Français (fre) Catégories : Français - Anglais
Génie MécaniqueTags : transmission mécanique Roues d'échange Engrenzge Index. décimale : 620 Génie Mécanique En ligne : ../theses/gmecanique/MEC5653.pdf Permalink : index.php?lvl=notice_display&id=665 Modélisation de calcul des roues d'échange dans une transmission mécanique par engrenage [texte imprimé] / Mohamed-Salah Mecibah ; Univ. de Constantine, Éditeur scientifique ; Hamlaoui Boughouas, Directeur de thèse . - 2010 . - 122 f.
01 Disponible à la salle de recherche 01 Disponible au magazin de la B.U.C. 01 CD
Langues : Français (fre)
Catégories : Français - Anglais
Génie MécaniqueTags : transmission mécanique Roues d'échange Engrenzge Index. décimale : 620 Génie Mécanique En ligne : ../theses/gmecanique/MEC5653.pdf Permalink : index.php?lvl=notice_display&id=665 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité MEC/5653 MEC/5653 Thèse Bibliothèque principale Thèses Disponible
Titre : Simulation et optimisation d’un modèle de capteur cylindro-parabolique Type de document : texte imprimé Auteurs : Taqiy Eddine Boukelia, Auteur ; Mohamed-Salah Mecibah, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2016 Importance : 173 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Génie MécaniqueTags : Cylindro-parabolique Centrale Optimisation Performance Rayonnement solaire Simulation Optimization Parabolic trough Plant Solar radiation أشعة شمسية أداء تحسين لاقط مقعر ذو قطع مكافىء محاكاة محطة Index. décimale : 620 Génie Mécanique Résumé : In the first part of thesis, we had started by the estimation of the Algerian solar radiation potential. Because the use of parabolic trough solar collectors implies that these systems only work with the direct normal irradiance (DNI). For this purpose, a proposed methodology for estimating the DNI in the presence or the absence of measured global and diffuse irradiances. When applying the proposed methodology for the calculation of DNI for three Algerian ground stations, we obtained better performances than those of five spatial databases data. Furthermore, an analysis of
optical and thermal performances of a parabolic trough solar collector has been presented. The solar radiation intercepted by the solar collector in different modes of tracking, the incidence angle modifier, the row shadowing and the end loss, in addition to the thermal losses and the conversion efficiency in every moment can be calculated using the developed model in this study.
The third part presents the design of the power block with a steam regenerative 50 MW
Rankine cycle, for solar installations with parabolic trough solar concentrators, and using two different fluids: thermic oil and molten salt. Due to the difference in the main stream parameters of the two power blocks, we can note that the power cycle efficiency at the assumed nominal conditions of the solar salt plant is higher than Therminol VP-1. While the fourth part of our study is based on evaluation and comparison of eight different configurations of these plants (with molten salt and thermic oil, with and without thermal storage system and backup system) in terms
of their design, thermodynamic yield (energetic and exergetic), economic factors and the environmental impacts. The results indicate that the configurations with integrated thermal energy storage and fossil fuel backup system are found to be more techno-economical, but on the other hand, they are less environment friendly.
In the last part, we optimized the two plants using the artificial neural network method. The results show that it is possible to get minimum values of LCOE of 8,3 and 7,0 cent $/kWh for oil and salt configurations, respectively. Moreover, a 4E (energy–exergy–environment–economic) comparison of the optimized plants is studied, in order to choose the best technology to be adapted in the viability study for Algerian locations. According to the feasibility analysis, the semi-arid and arid Algerian sites are suitable for realization of parabolic trough power plants with integrated
thermal energy storage and fuel backup system.Diplôme : Doctorat En ligne : ../theses/gmecanique/BOU6864.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10178 Simulation et optimisation d’un modèle de capteur cylindro-parabolique [texte imprimé] / Taqiy Eddine Boukelia, Auteur ; Mohamed-Salah Mecibah, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2016 . - 173 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Génie MécaniqueTags : Cylindro-parabolique Centrale Optimisation Performance Rayonnement solaire Simulation Optimization Parabolic trough Plant Solar radiation أشعة شمسية أداء تحسين لاقط مقعر ذو قطع مكافىء محاكاة محطة Index. décimale : 620 Génie Mécanique Résumé : In the first part of thesis, we had started by the estimation of the Algerian solar radiation potential. Because the use of parabolic trough solar collectors implies that these systems only work with the direct normal irradiance (DNI). For this purpose, a proposed methodology for estimating the DNI in the presence or the absence of measured global and diffuse irradiances. When applying the proposed methodology for the calculation of DNI for three Algerian ground stations, we obtained better performances than those of five spatial databases data. Furthermore, an analysis of
optical and thermal performances of a parabolic trough solar collector has been presented. The solar radiation intercepted by the solar collector in different modes of tracking, the incidence angle modifier, the row shadowing and the end loss, in addition to the thermal losses and the conversion efficiency in every moment can be calculated using the developed model in this study.
The third part presents the design of the power block with a steam regenerative 50 MW
Rankine cycle, for solar installations with parabolic trough solar concentrators, and using two different fluids: thermic oil and molten salt. Due to the difference in the main stream parameters of the two power blocks, we can note that the power cycle efficiency at the assumed nominal conditions of the solar salt plant is higher than Therminol VP-1. While the fourth part of our study is based on evaluation and comparison of eight different configurations of these plants (with molten salt and thermic oil, with and without thermal storage system and backup system) in terms
of their design, thermodynamic yield (energetic and exergetic), economic factors and the environmental impacts. The results indicate that the configurations with integrated thermal energy storage and fossil fuel backup system are found to be more techno-economical, but on the other hand, they are less environment friendly.
In the last part, we optimized the two plants using the artificial neural network method. The results show that it is possible to get minimum values of LCOE of 8,3 and 7,0 cent $/kWh for oil and salt configurations, respectively. Moreover, a 4E (energy–exergy–environment–economic) comparison of the optimized plants is studied, in order to choose the best technology to be adapted in the viability study for Algerian locations. According to the feasibility analysis, the semi-arid and arid Algerian sites are suitable for realization of parabolic trough power plants with integrated
thermal energy storage and fuel backup system.Diplôme : Doctorat En ligne : ../theses/gmecanique/BOU6864.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10178 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BOU/6864 BOU/6864 Thèse Bibliothèque principale Thèses Disponible
