http://dspace.univ-djelfa.dz:8080/xmlui/handle/123456789/5 Wed, 21 Oct 2026 15:35:07 GMT 2026-10-21T15:35:07Z http://dspace.univ-djelfa.dz:8080/xmlui/bitstream/id/2030/uzad1.png http://dspace.univ-djelfa.dz:8080/xmlui/handle/123456789/5 http://dspace.univ-djelfa.dz:8080/xmlui/handle/112/8654 TP Méthodes Numériques RAACH, Youcef Ce polycopié, intitulé « TP Méthodes Numériques », est destiné aux étudiants de deuxième année Sciences et Technologie (ST). Il a pour objectif principal de compléter les connaissances théoriques acquises en cours et en travaux dirigés, à travers des applications pratiques permettant de mieux comprendre et maîtriser les principales méthodes numériques. Les travaux pratiques proposés visent à familiariser les étudiants avec les différentes techniques de résolution numérique, telles que la résolution des équations non linéaires, la résolution des systèmes d’équations linéaires, l’interpolation polynomiale, l’approximation des fonctions ainsi que les méthodes numériques d’intégration et de dérivation, selon le programme enseigné. Une attention particulière est accordée à la mise en oeuvre des algorithmes, à l’interprétation des résultats obtenus et à l’étude des erreurs liées aux calculs numériques en utilisant le langage de programmation Matlab. Sun, 06 Sep 2026 00:00:00 GMT http://dspace.univ-djelfa.dz:8080/xmlui/handle/112/8654 2026-09-06T00:00:00Z http://dspace.univ-djelfa.dz:8080/xmlui/handle/112/8600 ENVIRONMENT AND SUSTAINABLE DEVELOPMENT ZAITRI, Mokhtar Foreword This course handout is intended for third-year students in Mechanical Construction and Industrial Maintenance programs. It will enable them to acquire the fundamental concepts related to the environment and sustainable development. The first chapter introduces the concept of the environment, followed by a second chapter devoted to the concept of sustainable development. The third chapter deals with the environment and resources, while the fourth addresses the issue of substances. Finally, the fifth and final chapter is dedicated to environmental protection. Sun, 06 Sep 2026 00:00:00 GMT http://dspace.univ-djelfa.dz:8080/xmlui/handle/112/8600 2026-09-06T00:00:00Z http://dspace.univ-djelfa.dz:8080/xmlui/handle/112/8585 Electromagnetic Compatibility (EMC) Course Notes HAMEURLAINE, Abdelhadi Learning objectives The main target for this subject is to provide to the students a global vision of all aspects of the electromagnetic compatibility The objectives of an Electromagnetic Compatibility (EMC) course are to train engineers and technicians capable of designing electronic systems that function correctly in their environment without interfering with other equipment. This electromagnetic compatibility (EMC) course is intended for first-year Master's students in electrical engineering and embedded systems electronics. The course notes are structured into four chapters. Currently, the study of electromagnetic compatibility (EMC) in electrical and electronic systems has become of paramount importance. Indeed, all electrical and electronic systems are subject to disturbances originating from stray energy that unintentionally crosses their boundaries; this stray energy is called electromagnetic interference. Electromagnetic interference is becoming increasingly problematic for electrical and/or electronic systems. This interference can also be a source of disruption for neighboring systems or other users of the same system. This gives rise to a discipline called electromagnetic compatibility (EMC), that is, the art of making sensitive electrical systems work in a disturbed electromagnetic environment, but also of reducing the disturbances generated by electrical systems from their design stage. The objective of this course is to explain the basics of electromagnetic compatibility (EMC), and its importance for businesses. An electronic system that functions compatibly with other electronic systems without producing or being susceptible to electromagnetic interference is said to be electromagnetically compatible with its environment. The objective of this course is to recognize and understand Electromagnetic Compatibility (EMC) challenges. EMC challenges occur across numerous critical application areas. Examples of non-compliance include mobile telephones interfering with pacemakers or aircraft avionics, broadcast stations disrupting automotive engine management systems, or switching noise in power converters affecting sensitive control circuits. Key application domains where EMC is essential include Power Electronics, Electrical Transportation (automotive, aviation and maritime), Telecommunication and integrated circuit design. Knowledge of unwanted electromagnetic phenomena, interferences, understand unwanted coupling and to be able to find possible interference mitigation measures. Where understanding the connection between fundamental EM phenomena and real physical situation is the main objective. In this course, you will learn to recognize non-ideal behaviors in electronic components and explore phenomena, shielding strategies, and methods to control conducted EMI. Additionally, you'll gain insights into minimizing crosstalk effects, reducing radiated EMI emissions, and enhancing system immunity. CM and DM EMI issues, along with the role of Transfer Impedance in EMC design, will also be covered. This course provides a comprehensive foundation for navigating the intricacies of EMC in electronic design. Electromagnetic compatibility (EMC) is a discipline that aims to study the problems of electromagnetic coexistence. Its purpose is to:  To study unintentional energy transfers between electrical and/or electronic systems,  To develop processes to limit the electromagnetic interference emitted and thereby comply with current regulations,  To develop processes to increase the immunity of systems to parasites. Electromagnetic compatibility (EMC) is the science that enables the correct functioning of an electrical or electronic system in the presence of other systems in its environment. The work was therefore carried out in two parts:  The first part defines the principle of EMC and its legal framework. A brief review of electronics then helps to understand the difference between electric, magnetic, and electromagnetic fields. We will then be able to understand what electromagnetic interference is and see some methods for verifying the performance of equipment in terms of EMC.  The last part briefly presents the techniques that can be implemented to protect the equipment. Sun, 06 Sep 2026 00:00:00 GMT http://dspace.univ-djelfa.dz:8080/xmlui/handle/112/8585 2026-09-06T00:00:00Z http://dspace.univ-djelfa.dz:8080/xmlui/handle/112/8582 Handout of Elasticity GUESMI, Mohamed Context and Motivation The mechanical behavior of solid bodies under external loading constitutes one of the most fundamental and practically significant areas of engineering science. From the analysis of civil infrastructure to the design of aerospace structures, the ability to predict how materials deform, develop internal stresses, and ultimately reach their limits of safe operation is central to the work of structural and mechanical engineers. Elasticity theory provides the rigorous mathematical and physical framework that underpins all such analyses, offering tools to describe reversible deformation, stress distributions, and the recovery of shape upon removal of loads. The present course handout is designed for first-year Master's students in Civil Engineering, specializing in Structures, at Ziane Achour University of Djelfa. It responds to the need for a unified, self-contained, and pedagogically accessible treatment of elasticity theory at an advanced undergraduate and early graduate level. The course spans two theoretical pillars: the mathematical formalism necessary to express field equations in compact and invariant form, and the physical insight required to interpret solutions in terms of real engineering phenomena. Scope and Objectives The primary objective of this course is to equip students with both the analytical and conceptual tools needed to study the mechanical behavior of elastic bodies and structural elements. Students are expected to gain a deep understanding of the interrelated concepts of stress, strain, and constitutive laws, and to develop the capacity to formulate and solve elasticity problems in two and three dimensions. The course also prepares students for the study of advanced structural analysis techniques, in particular the finite element method, which is now indispensable in professional engineering practice. Beyond the acquisition of analytical skills, this course aims to cultivate a rational and critical approach to structural modeling. By working through the derivation of governing equations from first principles, students learn to distinguish between exact solutions and engineering approximations, to recognize the limitations of classical theories, and to apply simplifying assumptions judiciously in practical contexts. This capacity for theoretical rigor combined with engineering judgment is the hallmark of a well-trained structural engineer. Structure of the Course The course is organized into eight chapters, each addressing a distinct but interconnected aspect of elasticity theory. The first chapter introduces the foundational concepts of continuum mechanics, including the classification of elastic materials, Hooke's Law in its elementary form, and the mathematical tools of index notation and tensor algebra. These tools are essential for the compact and invariant expression of field equations throughout the course. Chapters Two and Three are devoted to the theory of stress and strain states, respectively. In Chapter Two, the Cauchy stress tensor is introduced, including its physical interpretation, principal stresses, stress invariants, the differential equations of equilibrium, and Mohr's circle for graphical representation. Chapter Three treats the kinematics of deformation, covering the Green–Lagrange and linearized strain tensors, the small perturbation hypothesis, strain–displacement relations in multiple coordinate systems, principal strains, compatibility equations, and experimental measurement techniques. Chapter Four presents the constitutive laws governing the elastic response of materials, including the generalized Hooke's law in one, two, and three dimensions, the role of Lamé and engineering elastic constants, orthotropy and anisotropy, thermoelastic effects, and the strain energy concept. Chapter Five consolidates these developments into the general equations of linear elasticity, specifically the Navier–Cauchy displacement equations and the Beltrami–Michell stress compatibility equations, together with Saint-Venant's principle. The remaining three chapters shift the focus toward structural applications. Chapter Six develops the theory of plane elasticity, including plane stress and plane strain formulations and the Airy stress function approach for solving two-dimensional problems analytically. Chapter Seven addresses beam bending through both the Euler–Bernoulli and Timoshenko beam theories, comparing their assumptions, governing equations, and ranges of applicability. Chapter Eight introduces the study of thin plates using the Kirchhoff–Love model, covering plate kinematics, constitutive behavior, equilibrium equations, the governing biharmonic equation, and strain energy formulations. Prerequisites and Learning Outcomes This course assumes a solid background in mathematics, particularly in linear algebra, differential equations, and vector calculus, as well as a working knowledge of Strength of Materials at the undergraduate level. Upon successful completion of the course, students will be able to apply index notation and tensor calculus to formulate elasticity problems; analyze stress and strain states including principal values, invariants, and graphical representations; use constitutive laws to relate stress and strain for isotropic, orthotropic, and anisotropic materials; derive and apply the Navier–Cauchy and Beltrami–Michell equations; solve plane elasticity problems using Airy stress functions; analyze beam bending using Euler–Bernoulli and Timoshenko theories; and study the bending behavior of thin elastic plates. Together, these competencies form a comprehensive foundation for graduate-level work in structural mechanics, numerical methods, and advanced material design, positioning students to contribute meaningfully to research and professional practice in civil and structural engineering. Sun, 06 Sep 2026 00:00:00 GMT http://dspace.univ-djelfa.dz:8080/xmlui/handle/112/8582 2026-09-06T00:00:00Z