Mechanical (Machine) Engineering Design II

At the end of this course, the students should be able to: 1. demonstrate proficiency in the principles of design; 2. demonstrate proficiency in the selection of materials for design; 3. carry out simple stress analysis; and 4. demonstrate proficiency in principles of coupling, clutches and brakes.

Journal bearings. Application of Hertz stress theory. Fluid couplings. Lubrication mechanics: hydrodynamic theory applied to tapered wedge and journal bearings and hydrostatic lubrication applied to journal bearings. Gears and power transmission systems. Elements of fluid power system design. Design of cylinders, pipes and pipe joints, tubes, plates and flywheel. Seals, packaging, gaskets and shields. Failure analysis; various types of joints, design of machine elements; system design, design of gear systems; material selection in design; design; design and production matching; optimisation in design D MEE 402 Theory (Mechanics) of Machines II (2 Units E: LH 30) Leaning Outcomes At the end of this course, the students should be able to: 1. identify the forces acting on a mechanism and the resolution of the forces; 2. demonstrate understanding of the performance of various mechanisms and principal machine elements as regards their kinematics and dynamics; 3. identify the types of motion and their applications; 4. identify forces on shaft and bearing due to single revolving mass; 5. demonstrate procedure for balancing several masses in different transverse planes; 6. prepare professional quality solutions and presentations to effectively communicate the results of analysis and design; 7. translate ideas and imaginations into conceptual designs using the tools of conventional engineering drawings and computer aided designs; and 8. use the knowledge of the course to solve real life problems related to production processes and to develop machines. Course Contents Force analysis of mechanisms, fluctuation of kinetic energy and inertial effects. Complete static and dynamic analysis. Flexible shaft couplings: belt, rope and chain drives. The flywheel and mechanical governors. Brakes and dynamometers. Balancing of multi-cylinder engines. Balancing of machinery. Vibration of machinery; free and forced vibration, damping, natural frequencies and critical speeds. Transverse vibrations of beams, whirling of shafts and torsional vibrations.