Résultat de la recherche
83 recherche sur le tag
'Simulation' 
Visionner les documents numériques
Affiner la recherche Générer le flux rss de la recherche
Partager le résultat de cette recherche Interroger des sources externes
Titre : Comportement et performance plastique de structures multi-étagées et multi-travées. Type de document : texte imprimé Auteurs : Adel Ziada, Auteur ; M.L. Samai, Directeur de thèse Editeur : Constantine : Université Mentouri Constantine Année de publication : 2009 Importance : 86 f. Note générale : 01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD Langues : Français (fre) Catégories : Français - Anglais
Génie CivilTags : Le Béton Structurel Armé et Précontraint Simulation Charge concentrée Mécanisme de ruine Charge de ruine Diagramme d'interaction Section critique méthode pushover concentrated loads collapse mechanism collapse load pushover method interaction diagram simulation critical section حمولة مركزة ميكانزم الانهيار حمولة الانهيار رسم بياني تشبيه المقاطع الحرجة طريقة pushover Index. décimale : 624 Génie civil Résumé : The present thesis has for object the study of the effect of the simulation of the
vertical loads and the influence of the ratio, ɑ = V/H (where ɑ varies from 0.1 to 15), between the vertical concentrated loadings, V, and the horizontal concentrated loadings, H, applied at the junctions column-beam, to the collapse mechanisms and the collapse loads of a reference frame (two storeys, two bays). For this type of structures, the determination of the true collapse mechanism can be done by the various methods existing in the plastic analysis of the structures, namely by the method of limit analysis by combining the different elementary mechanisms, m, (m = p - r, where p represents the number of critical sections and r the degree of redundancy) until the obtention of the smallest load factor, ʎ, or by the method step by step until the obtention of the (r+1)th plastic hinge. The last two methods are extremely hard for a frame exceeding a storey and a bay (degree of redundancy, r, high, increase in the number of critical sections), because part of the work should be done manually. For that, it was considered necessary to choose another nonlinear static method known as pushover by using software SAP2000. The latter deals with the phenomenon of redistribution of the moments, and facilitates the obtention of the true collapse mechanisms and in fact the determination of the true collapse loads. The analysis of the results allowed the construction of interaction diagrams similar to those for simple frames and this for different values of the ratio, ɑ, and for the three simulations of vertical concentrated loads selected. This construction being given in the literature only for simple frame (single storey, single bay). Moreover, the analysis also made it possible to identify the modes of collapse of the reference frame and this for different ranges for the ratio, ɑ.Note de contenu : Annexes. Diplôme : Magistère En ligne : ../theses/gcivil/ZIA5340.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=600 Comportement et performance plastique de structures multi-étagées et multi-travées. [texte imprimé] / Adel Ziada, Auteur ; M.L. Samai, Directeur de thèse . - Constantine : Université Mentouri Constantine, 2009 . - 86 f.
01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD
Langues : Français (fre)
Catégories : Français - Anglais
Génie CivilTags : Le Béton Structurel Armé et Précontraint Simulation Charge concentrée Mécanisme de ruine Charge de ruine Diagramme d'interaction Section critique méthode pushover concentrated loads collapse mechanism collapse load pushover method interaction diagram simulation critical section حمولة مركزة ميكانزم الانهيار حمولة الانهيار رسم بياني تشبيه المقاطع الحرجة طريقة pushover Index. décimale : 624 Génie civil Résumé : The present thesis has for object the study of the effect of the simulation of the
vertical loads and the influence of the ratio, ɑ = V/H (where ɑ varies from 0.1 to 15), between the vertical concentrated loadings, V, and the horizontal concentrated loadings, H, applied at the junctions column-beam, to the collapse mechanisms and the collapse loads of a reference frame (two storeys, two bays). For this type of structures, the determination of the true collapse mechanism can be done by the various methods existing in the plastic analysis of the structures, namely by the method of limit analysis by combining the different elementary mechanisms, m, (m = p - r, where p represents the number of critical sections and r the degree of redundancy) until the obtention of the smallest load factor, ʎ, or by the method step by step until the obtention of the (r+1)th plastic hinge. The last two methods are extremely hard for a frame exceeding a storey and a bay (degree of redundancy, r, high, increase in the number of critical sections), because part of the work should be done manually. For that, it was considered necessary to choose another nonlinear static method known as pushover by using software SAP2000. The latter deals with the phenomenon of redistribution of the moments, and facilitates the obtention of the true collapse mechanisms and in fact the determination of the true collapse loads. The analysis of the results allowed the construction of interaction diagrams similar to those for simple frames and this for different values of the ratio, ɑ, and for the three simulations of vertical concentrated loads selected. This construction being given in the literature only for simple frame (single storey, single bay). Moreover, the analysis also made it possible to identify the modes of collapse of the reference frame and this for different ranges for the ratio, ɑ.Note de contenu : Annexes. Diplôme : Magistère En ligne : ../theses/gcivil/ZIA5340.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=600 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité ZIA/5340 ZIA/5340 Thèse Bibliothèque principale Thèses Disponible Etude et réalisation d'un simulateur particulaire de la croissance cristalline hétéroépitaxique / Abdelouahab Amrani
Titre : Etude et réalisation d'un simulateur particulaire de la croissance cristalline hétéroépitaxique Type de document : texte imprimé Auteurs : Abdelouahab Amrani ; Université Paul-Sabatier, Éditeur scientifique ; D. Esteve, Directeur de thèse Année de publication : 1988 Importance : 177 f. Note générale : 1 Disponible à la salle de recherche Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Simulation Interface Croissance cristalline Semiconducteur Hétéroépitaxie Interaction moléculaire Index. décimale : 621 Electronique Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=2461 Etude et réalisation d'un simulateur particulaire de la croissance cristalline hétéroépitaxique [texte imprimé] / Abdelouahab Amrani ; Université Paul-Sabatier, Éditeur scientifique ; D. Esteve, Directeur de thèse . - 1988 . - 177 f.
1 Disponible à la salle de recherche
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Simulation Interface Croissance cristalline Semiconducteur Hétéroépitaxie Interaction moléculaire Index. décimale : 621 Electronique Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=2461 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité AMR/1718 AMR/1718 Thèse Bibliothèque principale Thèses Disponible
Titre : Etude du champ solaire d’une centrale thermique hybride de production d’electricite. Type de document : texte imprimé Auteurs : Adel Miles, Auteur ; O. Khemis, Directeur de thèse ; Abderrezak Merabet, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2017 Importance : 145 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Génie MécaniqueTags : solaire thermodynamique, concentration, Cylindro-parabolique Centrale Optimisation Performance Rayonnement solaire Simulation solar thermodynamics, concentration, Parabolic trough Power station Optimization Solar radiation الطاقة الشمسیة الحراریة وتركیز لاقط مقعر ذو القطع المكافئ المركزیة الأمثل الأداء الأشعة
الشمسیة المحاكاةIndex. décimale : 620 Génie Mécanique Résumé : The work presented in this thesis is a contribution to the study of the production of
electricity by a hybrid thermal power plant exploiting the solar field on the one hand and
natural gas on the other hand. This work concerns firstly the evaluation of the thermodynamic performances of a solargas hybrid thermal power system with a power of 150 MW, the method of energy analysis was used in this thesis. This method is used to determine the main parameters in order to achieve improvements in system performance. The development of the analysis model in this thesis is carried out by determining the thermal and solar efficiency as well as the efficiency of solar electricity. Due to the calculation of the thermal and solar performances in typical days and an average of the days of the year, we used simulation software "Aspen Plus" to determine the thermodynamic parameters of the hybrid plant in the case of Algerian weather conditions. As well as the System Advisor Model (SAM), this gives a methodology and
information particularly on cylindro-parabolic shapes concerning the part of the solar field in the system studied. The results are calculated hour by hour from sunrise to sunset. The second part of this work is being improved in the overall efficiency of the plant with two levels of pressure that directly affects the capacity of the steam turbine in the power block. In the third part, an optimization of the power at the level of the steam turbine is also carried out. The optimization was carried out in the power block which contains two gas turbines and a double pressure steam cycle where the high pressure part is only heated. Preliminary simulations for this system have shown that the steam turbine cycle can achieve optimum conditions for reheating and low vapor pressure, which would enhance the performance of the system. The fourth part concerns the comparison of the key parameters of the thermal power plant in different sites based on the economic factor (LCOE), the configuration of the solar field section and the line spacing or the so-called effect of shading. The exploitation of the "Aspen plus" and "SAM" software enabled us to establish models of optimal hybrid power plants (solar-gas) in the arid zone of Algeria. Such a study is a reference for the construction and site selection of the installation of this type of power plant.Diplôme : Doctorat en sciences En ligne : ../theses/gmecanique/MIL7126.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10476 Etude du champ solaire d’une centrale thermique hybride de production d’electricite. [texte imprimé] / Adel Miles, Auteur ; O. Khemis, Directeur de thèse ; Abderrezak Merabet, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2017 . - 145 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Génie MécaniqueTags : solaire thermodynamique, concentration, Cylindro-parabolique Centrale Optimisation Performance Rayonnement solaire Simulation solar thermodynamics, concentration, Parabolic trough Power station Optimization Solar radiation الطاقة الشمسیة الحراریة وتركیز لاقط مقعر ذو القطع المكافئ المركزیة الأمثل الأداء الأشعة
الشمسیة المحاكاةIndex. décimale : 620 Génie Mécanique Résumé : The work presented in this thesis is a contribution to the study of the production of
electricity by a hybrid thermal power plant exploiting the solar field on the one hand and
natural gas on the other hand. This work concerns firstly the evaluation of the thermodynamic performances of a solargas hybrid thermal power system with a power of 150 MW, the method of energy analysis was used in this thesis. This method is used to determine the main parameters in order to achieve improvements in system performance. The development of the analysis model in this thesis is carried out by determining the thermal and solar efficiency as well as the efficiency of solar electricity. Due to the calculation of the thermal and solar performances in typical days and an average of the days of the year, we used simulation software "Aspen Plus" to determine the thermodynamic parameters of the hybrid plant in the case of Algerian weather conditions. As well as the System Advisor Model (SAM), this gives a methodology and
information particularly on cylindro-parabolic shapes concerning the part of the solar field in the system studied. The results are calculated hour by hour from sunrise to sunset. The second part of this work is being improved in the overall efficiency of the plant with two levels of pressure that directly affects the capacity of the steam turbine in the power block. In the third part, an optimization of the power at the level of the steam turbine is also carried out. The optimization was carried out in the power block which contains two gas turbines and a double pressure steam cycle where the high pressure part is only heated. Preliminary simulations for this system have shown that the steam turbine cycle can achieve optimum conditions for reheating and low vapor pressure, which would enhance the performance of the system. The fourth part concerns the comparison of the key parameters of the thermal power plant in different sites based on the economic factor (LCOE), the configuration of the solar field section and the line spacing or the so-called effect of shading. The exploitation of the "Aspen plus" and "SAM" software enabled us to establish models of optimal hybrid power plants (solar-gas) in the arid zone of Algeria. Such a study is a reference for the construction and site selection of the installation of this type of power plant.Diplôme : Doctorat en sciences En ligne : ../theses/gmecanique/MIL7126.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10476 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité MIL/7126 MIL/7126 Thèse Bibliothèque principale Thèses Disponible
Titre : Materiaux pour detecteurs infrarouges : Proprietes et caracterisations Type de document : texte imprimé Auteurs : Said Kouissa, Auteur ; Amor Djemel, Directeur de thèse ; Mohamed Salah Aida, Directeur de thèse Editeur : constantine [Algérie] : Université Constantine 1 Année de publication : 2013 Importance : 216 f. Format : 30 cm Note générale : 2 copies imprimées disponibles Langues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : Photo-détecteurs IR photoconducteur PbS PbSe simulation états de surface Dépôt chimique en solution (dépôt en bain chimique) activation infrarouge IR Photo-detectors photoconductor surface states chemical Bath deposition infrared activation مجسات الأشعة تحت الحمراء،؛ الناقل الإلكتروظوئي؛محاكاة؛حالات السطح؛الترسيب الكميائي في المحاليل؛التفعيل التحت أحمر Index. décimale : 530 Physique Résumé : The failure of the photoconductors is often related to the degradation of surface
sensitive element and ohmic contacts. At present, the commonly known models
correlate these degradations to the surface recombination velocity Vs, which is very
difficult to measure and estimate experimentally. This work deals with deposition,
characterization, modeling and simulation of materials and infra-red photo-detectors.
In this manuscript, a new model allow to correlate the degradation of photoconductors
performances to the surface defects was proposed. This model treats the surface in a
different way; it is characterized by three parameters, the defects density (Nt), a single
energy level (Et) localized in the forbidden gap and a capture cross section ().
Moreover, in this thesis we have deposited and characterized a PbS thin infraredsensitive
films, by the chemical bath deposition method (CBD). Prototypes of
photoconductors were constructed. The comparison between the theoretical results
and the performances of these photoconductors was carried out. The parameters
drawn from these simulations are in good agreement with those reported in the
literature.Diplôme : Doctorat En ligne : ../theses/physique/KOU6403.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=9420 Materiaux pour detecteurs infrarouges : Proprietes et caracterisations [texte imprimé] / Said Kouissa, Auteur ; Amor Djemel, Directeur de thèse ; Mohamed Salah Aida, Directeur de thèse . - constantine [Algérie] : Université Constantine 1, 2013 . - 216 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : Photo-détecteurs IR photoconducteur PbS PbSe simulation états de surface Dépôt chimique en solution (dépôt en bain chimique) activation infrarouge IR Photo-detectors photoconductor surface states chemical Bath deposition infrared activation مجسات الأشعة تحت الحمراء،؛ الناقل الإلكتروظوئي؛محاكاة؛حالات السطح؛الترسيب الكميائي في المحاليل؛التفعيل التحت أحمر Index. décimale : 530 Physique Résumé : The failure of the photoconductors is often related to the degradation of surface
sensitive element and ohmic contacts. At present, the commonly known models
correlate these degradations to the surface recombination velocity Vs, which is very
difficult to measure and estimate experimentally. This work deals with deposition,
characterization, modeling and simulation of materials and infra-red photo-detectors.
In this manuscript, a new model allow to correlate the degradation of photoconductors
performances to the surface defects was proposed. This model treats the surface in a
different way; it is characterized by three parameters, the defects density (Nt), a single
energy level (Et) localized in the forbidden gap and a capture cross section ().
Moreover, in this thesis we have deposited and characterized a PbS thin infraredsensitive
films, by the chemical bath deposition method (CBD). Prototypes of
photoconductors were constructed. The comparison between the theoretical results
and the performances of these photoconductors was carried out. The parameters
drawn from these simulations are in good agreement with those reported in the
literature.Diplôme : Doctorat En ligne : ../theses/physique/KOU6403.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=9420 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité KOU/6403 KOU/6403 Thèse Bibliothèque principale Thèses Disponible Documents numériques
texte intègraleAdobe Acrobat PDF
Titre : Matière noire : simulation d'un veto de muons dans un site souterrain Type de document : texte imprimé Auteurs : Samira Amouri-Lakehal ; Univ. de Constantine, Éditeur scientifique ; F. Benrachi, Directeur de thèse Année de publication : 2005 Importance : 121 f. Note générale : 01 Disponible à la salle de recherche 02 Disponibles au magazin de la bibliothèque centrale Langues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : Simulation Matière noire WIMPs Bolomètre Neutrons Muons Laboratoire souterrain Geant Index. décimale : 530 Physique Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=3567 Matière noire : simulation d'un veto de muons dans un site souterrain [texte imprimé] / Samira Amouri-Lakehal ; Univ. de Constantine, Éditeur scientifique ; F. Benrachi, Directeur de thèse . - 2005 . - 121 f.
01 Disponible à la salle de recherche 02 Disponibles au magazin de la bibliothèque centrale
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : Simulation Matière noire WIMPs Bolomètre Neutrons Muons Laboratoire souterrain Geant Index. décimale : 530 Physique Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=3567 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité AMO/4333 AMO/4333 Thèse Bibliothèque principale Thèses Disponible PermalinkSimulation et étude comparée de cycle à absorption (LiBr) à usage de froid.Cas de l'unité de production de détergent Henkel / Mohamed Lamine Chougui
PermalinkPermalinkPermalinkPermalinkPermalink
PermalinkPermalinkPermalinkPermalink
PermalinkPermalinkPermalink
Permalink
Permalink
