Génie mécanique

This document presents the internship experience of Mohamed Houssem CHORTANI at STAFIM Peugeot, focusing on various mechanical systems and processes in vehicle maintenance and repair. It outlines the history, function, and components of Peugeot in Tunisia, along with detailed descriptions of engine types, braking systems, clutches, and suspensions. The report concludes with an appreciation for the team at STAFIM for their guidance during the internship.

Ce document pr sente un rapport de stage r alis par Weslati Achraf au sein de la soci t Ben Jemma Motors. Le rapport d crit l'exp rience acquise, les t ches effectu es, et l'organisation de l'entreprise. Il inclut une tude de l'entreprise ainsi que des activit s sp cifiques men es durant le stage.

Ce rapport présente le stage de perfectionnement réalisé au sein de l'organisme deFOnTaine en Tunisie. Il aborde la présentation de l'entreprise, son secteur d'activité et ses ressources, ainsi que les différentes fonctions exercées. Enfin, il inclut une étude de cas sur la production au sein de l'atelier de fabrication.

Ce document est un rapport de stage d'initiation r dig par Achraf Weslati. Il d taille son exp rience au sein de la soci t Ben Jemma Motors, o il a appliqu ses connaissances th oriques en g nie m canique dans un cadre professionnel. Le rapport inclut une tude de l'organisme et les t ches effectu es durant le stage.

Ce rapport pr sente l'exp rience de stage de l'auteur au sein de l'entreprise Corail Technologie. Il d taille les activit s observ es et r alis es, ainsi que le fonctionnement de l'entreprise. Les diff rents chapitres abordent la pr sentation de l'entreprise, les machines utilis es, et les t ches effectu es par le stagiaire.

This document explores the mechanics behind transmission systems and gearboxes. It defines different types of vehicle transmission: front-wheel drive, rear-wheel drive, and all-wheel drive, emphasizing their functional differences and mechanics. It details the components of a transmission system, including the clutch and gearbox, explaining their roles in power transfer and the adaptation of torque to driving conditions. Additionally, it covers gearbox types, their internal structures (primary, secondary, and intermediate shafts), and their classifications based on technology, synchronizati...

This document provides a comprehensive analysis of water vapor's importance in industrial processes, its thermal properties, and its behavior under varying pressure and temperature conditions. It explores key formulas such as the Duperray formula for pressure-temperature relation and Bertin's formula for saturated steam density. It highlights the significant energy required for phase changes and emphasizes the utility of steam for efficient heat transfer. Practical examples and tables are used to illustrate key calculations and thermodynamic principles.

This document explores the design and optimization of a heat exchanger within a hybrid renewable energy system combining wind energy, diesel generation, and compressed air storage. It systematically evaluates multiple system configurations for heat storage and exchange, considering thermal efficiencies, system costs, and environmental impacts. Phase change materials (PCMs) and their performance are investigated to achieve optimal thermal storage. A final configuration is selected using detailed decision matrices and material comparisons to ensure practicality and energy sustainability.

This document delves into the concept of specific heat capacity (c) and its practical applications, including energy calculations for materials such as water, air, and concrete. It covers energy conservation principles and demonstrates heat transfer methodologies using real-world scenarios like water temperature mixing and environmental impacts of heat emissions and extraction. Furthermore, it provides detailed computations regarding heating requirements for residential water, air, and concrete structures, elucidating both theoretical and empirical approaches to thermal energy management.

This document focuses on presenting the LEONI industrial group's activities, specifically analyzing the LEONI Mateur Nord site in Tunisia. It discusses the production of electrical harnesses for the automotive industry, while detailing the organizational and operational structure of the site. The study highlights a problem related to the inefficiency of the wire feeding system (dérouleur) and proposes an improved mechanism utilizing a guided bucket for automatic elevation and rotation of reels. The improvement aims to minimize worker fatigue, reduce time loss, and enhance production efficie...

This document is a technical datasheet for TOTAL TBTS heavy fuel oils with a sulfur content of ≤ 1%. It describes the main physical and chemical properties of the products, including sulfur content, viscosity, flash point, and calorific values, along with standard testing methodologies (e.g., NF EN and ISO standards). Recommended handling practices such as maintaining storage temperatures, preventing combustible ignition, and cleaning filters are presented. Administrative and regulatory compliance, as well as additional safety precautions like the use of fire extinguishing products, are bri...

An échangeur de chaleur enables efficient thermal energy transfer between two fluids without mixing them, maintaining their distinct physicochemical properties such as pressure and composition. These devices are pivotal in various applications, from HVAC systems and nuclear plants to refrigeration and industrial processes. The document discusses operation modes like co-current, counter-current, and crossflow configurations, alongside detailed mathematical modeling involving logarithmic temperature differences and power calculations. It addresses design considerations through examples of dif...

This document explores the thermal modeling during the glass thermoforming process. It identifies key challenges, such as non-homogeneous thickness, mold surface defects, and structural breaches due to the coupling of thermal and mechanical properties. A numerical resolution code was developed using Monte Carlo methods, validating strong and weak thermal-mechanical coupling approaches. Results show minimal discrepancies in precision between coupling methods and suggest balancing computational cost and accuracy through optimized quanta allocation.

This document details a series of case studies focused on calculating the lifespan of bearings under various conditions. Case 1 evaluates single-row ball bearings supporting combined axial and radial loads, while Case 2 examines cylindrical roller bearings. Case 3 uses iterative elimination and optimization methods to select a compatible bearing for specific operational requirements. Additionally, Cases 4 and 5 analyze the lifespan of oblique and conical roller bearings using advanced mechanical modeling. Each case integrates technical formulas, manufacturer specifications, and presumed loa...

This document outlines methods to compute the lifespan of various bearings based on given load and operational data. The primary methodology involves applying static and dynamic forces, determining equivalent loads, and using specific formulas to calculate bearing lifespan. It includes procedures for choosing suitable ball bearings, considering load capacity and reliability over time, while recalculating dynamic loads iteratively. Lifespan and reliability calculations are provided for different bearing configurations, including cylindrical roller bearings, angular contact bearings, and coni...

The document introduces fluid mechanics concepts, detailing the properties and behaviors of fluids, specifically distinguishing between liquids and gases. It delves into the continuous medium theory, emphasizing the role of variables such as density, velocity, pressure, and temperature. Various equations are provided to describe compressibility, viscosity, and hydrostatics, including applications like Pascal's theorem and pressure determination in fluids. Advanced concepts such as force of pressure on surfaces and the center of pressure are addressed with supportive calculations and examples.

This document provides a detailed step-by-step procedure to dismantle, clean, and replace dual extruder heads in 3D printers for optimal performance. It outlines the precautions necessary to prevent hardware damage, such as avoiding force and ensuring temperature controls during thermal barrier adjustments. The manual emphasizes precise alignment of the extruder heads to ensure accurate calibration and smooth operation. Finally, it includes critical safety notes to prevent material damage, burns, and alignment errors during maintenance.

This document provides a detailed step-by-step guide for dismantling, cleaning, and replacing the nozzle on the STREAM PRO 3D printer head. The procedure emphasizes precision in each step to avoid damage to delicate thermal barriers and ensure proper functioning of the printer. Key safety measures are outlined to prevent injuries or operational hazards. Proper reassembly instructions ensure optimal alignment, calibration, and performance of the printer post-maintenance.