Educational guide 2020_21 Centro Universitario da Defensa na Escola Naval Militar de Marín (Pontevedra)

Contents

Topic	Sub-topic
Unit 1: Introduction to the topology of the mechanisms	• Basic concepts: link, cinematic pair, cinematic chain, mechanism, machine • Types of mechanisms • Degrees of freedom • Grashof theorem • Kinematic inversion • Mechanical advantage • Mechanisms of straight line and fast return • Mechanism schematization
Unit 2: Position analysis	• Graphic method • Graphic-analytical method • Analytical method: closed loop equations • Four-bar mechanism
Unit 3: Velocity analysis	• Elementary movements: rotation and translation • Analysis of relative velocity • Calculation of instantaneous centres of rotation • Graphic method • Analytical method
Unit 4: Acceleration analysis	• Basic moves: rotation, translation • General movement with relative speed. Coriolis acceleration • Relation between the acceleration of two points of the same element • Graphic methods • Analytical methods
Unit 5: Statics	• Foundations • Force system reduction to a point
Unit 6: Force Analysis and dynamics of the flat movement	• Systems dynamically equivalent • Inertial forces in the flat movement, principle of D' Alembert.
Unit 7: Rotation dynamics	• Static balancing • Dynamic balancing • Balancing analysis
Unit 8: Dynamic control: the flywheel	• Load cycles • Flywheel calculation
Unit 9: Cams	• The cam follower mechanism • Displacement diagram • Cinematic analysis • Graphic design of cam profiles
Unit 10: Gears	• Transmission mechanisms • Types of gears and applications • Cylindrical gears. Geometric parameters. Normalization. • Gear basic law • Forces and power transmission of the cylindrical gears • Gear train
Laboratory Practices (LP)	PL1 - Machinery analysis PL2 and PL3 - Assembly and kinematic analysis of basic mechanisms PL4 - Kinematic analysis and cam design PL5 - Assembly and analysis of dynamic systems with pulleys and belts PL6 - Assembly and analysis of gear trains PL7 - Defense of the project on the design of a mechanism