The engine cylinder head is an essential part in the operation of the automobile. it undergoes great stresses under thermal and mechanical stresses. The current study presents the thermomechanical analysis of the engine cylinder head with the use of a finite element software « ANSYS-Workbench. » The choice of materials to develop the engine cylinder head is a major factor for a good functioning. therefore, in the present work, Aluminum alloy is chosen. however, the results are not perfect. ...

Technological progress continues to demand more efficient systems. For rotating machines, the ideal goal is high power and extremely high speed However, despite advancements in design, vibration issues related to major components such as shafts and rotors are still a phenomenon worthy of attention. The latter is caused by inevitable processing and assembly failures, which limit the performance of the machine by affecting the operation and reliability of the machine. They can cause serious da...

Electronic microcomputers are needed. They are found in most electronic equipment. Today the technique allows a significant reduction of all complex functionalities and with a simplified implementation. The manufacture of microcomposants is based on the stacking of thin layers, the procedure of deposition of a metal and dielectric layer deposited on a silicon substrate in the form of the wafer. The deferential deposition temperatures of the different layers and the differences in coefficient...

Ce présent travail porte sur l'étude du comportement en régime dynamique des paliers lisses d'un moteur à combustion interne (palier de tête de bielle ou de pied de bielle), en tenant compte de la zone inactive (zone de cavitation). Les paramètres de fonctionnement les plus importants d'un palier de longueur finie sont calculés et comparés avec ceux obtenues dans le cas d'un palier court. La résolution du problème de lubrification hydrodynamique en régime transitoire, s'effectue à l'aide de l...

Mineral additions are increasingly used by concrete and mortar producers. Their consideration in the formulation of cementitious materials for compliance with the minimum cement dosage (substitution of a quantity of cement by mineral addition) is of particular interest on the economic (reduction in the cost of raw materials) and ecological (reduction CO2 emissions and consumption of non-renewable resources). This study aims to valorize a Bentonite clay from the Maghnia region in the form...

Erosion is a natural phenomenon that poses significant challenges to the durability and stability of hydraulic structures such as dams, dikes, and canals. This thesis explores various strategies and techniques for protecting hydraulic structures against water-induced erosion. The main objective is to analyze the mechanisms of erosion, identify the factors contributing to the wear of hydraulic structures, and propose effective solutions to minimize these impacts. The methodology adopted c...