Description
Objectives
The objective of this curricular unit is to develop in the students the ability to apply the basic engineering sciences, previously studied in other curricular units, to mechanical design. At the end, students should be able to design mechanical elements of moderate complexity, based on analytical and numerical tools and to combine geometric modelling with numerical tools with a critical design perspective.
Syllabus
1- Mechanical design: Design and its phases; Static loading failure theories; Fatigue failure theories. 2- Bolted and riveted joints: Designing a bolted joint with an external tensile load, an external shear load or both external tension and shear loads; Bolt fatigue failure criteria; Bolted and riveted joints loaded in shear. 3- Springs: Stresses and deflection in helical springs; Stability; Fatigue loading of helical springs. 4- Gears: Nomenclature and geometrical relations; Forces between the gears mating teeth; Contact ratio; Specific sliding; Efficiency; Tooth interference. 5- Gear trains: Ordinary gear trains; Epicyclic gear trains; Kinematic analysis. The Formula and the Tabulation method. 6- Shaft couplings: Rigid; Compliant; Flexible; Safety; Hydraulic. 7- Clutches and brakes: Cone and disk type; Rim type (internal expanding shoes) model; External contracting pivoted symmetrical shoes model; External band model.
Prerequisites
Technical Drawing and Geometrical Modelling, Materials in Engineering, Mechanics of Materials, Mechanical Behavior of Materials.
Cross Competence Component
Soft Skills with a weight of 10% of the 50% of the Midterm Assessment: 1- Critical and Innovative Thinking (Creativity and approaches to problem solving); 2- Interpersonal Skills (Oral presentations, communication skills and teamwork); 3- Intrapersonal Skills (Self-discipline, enthusiasm, perseverance, and self motivation).
Ethical Principles
All members of a group are responsible for the group’s work In any assessment, every student shall honestly disclose any help received and sources used. In an oral assessment, every student shall be able to present and answer questions about the entire assignment and solution.