General information


Subject type: Mandatory

Coordinator: Joan Triadó Aymerich

Trimester: First term

Credits: 4

Teaching staff: 

Pablo Alberto Genovese
Rubén Soto Rubio 

Teaching languages


  • Catalan
  • Spanish

Skills


Basic skills
  • B2-That the students know how to apply their knowledge to their job or vocation in a professional way and have the skills that are demonstrated through the elaboration and defense of arguments and the resolution of problems within their area of 'study

  • B4_That students can convey information, ideas, problems and solutions to both specialized and non-specialized audiences

     

Specific skills
  • Have knowledge and skills for the calculation, design and testing of machines

Description


The subject Mechanisms and Machines I, centered in the analysis of mechanisms, presents an integral training in this field incorporating also the subject of synthesis of mechanisms. It is a key element for the consolidation of learning, as it allows students to apply in the design of machine elements that has been worked on in other subjects. On the other hand, it is a key source of theoretical and applied knowledge for the professional practice of the mechanical engineer with regard to Machine Design.

Contents


  1. Introduction to the kinematics and dynamics of machines
    • Kinematics and Kinetics.
    • Mechanisms and machines
    • Applications of kinematics
  2. Fundamentals of kinematics
    • Degrees of freedom or mobility
    • Kinematic links
    • Chains and Kinematic Diagrams
    • Mechanisms and structures
    • Grashof's condition
  3. Synthesis of mechanisms
    • Generation of function, trajectory and movement
    • Limit conditions
    • Dimensional synthesis
    • Coupler curves
    • Cognitive Mechanisms
  4. Position analysis
    • Coordinate Systems
    • Position and displacement
    • Translation, rotation and complex movement
    • Algebraic analysis of position of mechanisms
    • Position of any point on a mechanism
    • Transmission angles, Stiffening positions
    • The Newton-Raphson solution method
  5. Speed ​​analysis
    • Definition of speed
    • Sliding speed
    • Analytical solutions for speed analysis
    • Speed ​​of any point of a mechanism
  6. Acceleration analysis
    • Definition of acceleration
    • Analytical solutions for acceleration analysis
    • Acceleration of any point of a mechanism
    • Human tolerance for acceleration
  7. Analysis of static forces
    • Applied and restraining forces
    • Conditions for balance
    • Free body diagrams
    • Elements of two and three forces
    • Elements of four forces
  8. Fundamentals of dynamics
    • Laws of Newton's motion
    • Dynamic models
    • Moment of Inertia
    • Parallel axis theorem
    • Energy methods: virtual work
  9. Dynamic force analysis
    • Newtonian solution method
    • A single link in pure rotation
    • Force analysis of a crank and four bar articulated connecting rod mechanism
    • Strength and moment of shaking
    • Force transmission index in a mechanism

Evaluation system


The calculation for the Final Grade (NF) of the subject is:

NF = 0,35 Ex1 + 0,35 Ex2 + 0,1 Inf + 0,2 Pr

  • NF: Final Note
  • Ex1: 1st Partial Examination (35%).
  • Ex1: 2nd Partial Examination (35%).
  • Inf: Work Report Grade (10%) = (Inf1 + Inf2 + Inf3) / 3
  • Pr: Practice Note (20%) = (P1 + P2 + P3 + P4 + P5) / 5

Clarifications:

  • The minimum grade for each of the exams is 3,5. In the event that any of the grades for the Ex1 and Ex2 activities is below the minimum grade, the final grade for the subject will be limited to 4.
  • Minimum mark of Practices (Pr) is 4. In case the mark of Practices is below the minimum mark, the final qualification of the asignatura will remain limited to 4.
  • Minimum grade of Work Report (Inf) is 4. In case the grade of Work Report is below the minimum grade, the final grade of the subject will be limited to 4.

Recovery:

  • It will be possible to recover all the evaluation acts separately (1st Partial Examination, 2nd Partial Examination and Practices).

REFERENCES


Basic

Genovese, Pablo A. (2020). Notes of Mecanismos y Máquinas I. Mataró: ESUPT Tecnocampus.

Sanmiguel Rojas, Enrique, & Hidalgo Martínez, Manuel (2014). Analysis of mechanisms. Madrid: Ediciones Paraninfo.

Complementary

Cardona Foix, Salvador, & Clos Costa, Daniel (2008). Theory of machines. Barcelona: Editions UPC.

Erdman, Arthur G., & Sandor, George N. (1998). Design of Mechanisms: Analysis and Synthesis. Mexico City: Prentice Hall.

Norton, Robert L. (2013). Machinery design. México DF: McGraw-Hill - Interamericana de Editores SA de CV

Uicker, Jr., John J., Pennock, Gordon R., & Shigley, Joseph E. (2017). Theory of Machines and Mechanisms. New York: Oxford University Press.