The subject offers an overview of the mechanical design of parts. It presents the basis of the design of mechanical elements: the safety degree is assessed according to the loads, dimensions and material of the mechanical element.

The subject consists of two differentiated parts: 'Statics' and 'Mechanics of Materials'. In Statics, the mechanical element is isolated and the external forces are analysed to obtain a free solid diagram. In Mechanics of Materials, the solid is considered deformable. This allows the study of internal forces (stresses) created by the external forces. Comparing the magnitude of these stresses with the mechanical properties of the material, it the safety coefficient is calculated and, thus, the design of the part is validated. An optimal mechanical design saves materials and resuces, enlarges the usable life cycle and improves social and environmental sustainability.

Competences:

CRI04 - Learn about and use the principles of materials resistance.

G011 - Develop the necessary learning skills to carry out ongoing training with a high level of autonomy.

G012 - Apply strategies found in scientific methodology.

G013 - Work efficiently in groups.



Learning outcomes:

Knows and uses the basic principles of particle statics and rigid solids.

Knows and uses beam and cable elements, the calculation of their main parameters for different types of loads.

Design structures in 2 and 3 dimensions.

Knows and uses the tensile and compression loads.

Knows and uses the bending loads in beams.

Knows and uses the torque loads in axes.

Knows and uses the buckling loads in columns

Unit 1. Statics of the particle and the rigid solid.

Unit 2. Beams and cables.

Unit 3. Structures.

Unit 4. Stress and deformation. Material properties characterisation tests.

Unit 5. Axial loads: tensile and compression.

Unit 6. Bending.

Unit 7. Torque.

Unit 8. Buckling.

In this subject different teaching methodologies are used, being the most common the problem-solving. The participation in the programmed activities ensures the development of the right skills by the students.

The following activities take place over the year:

- Lectures: the conceptual content of the subject is explained, with student participation in occasional debates.

- Seminars: cooperative work is done, using the puzzle of problems in groups. Debate based learning (DBL) is used to understand the influence of mechanical properties of materials on the mechanical behaviour and sustainability of mechanical elements.

- Also in seminars, a guided debate will be prepared and carried out. In this debate, the groups shall prepare the two sides regarding the mechanical design of the elements from the point view of mechanics, materials, and sustainability.

- Practical work in the laboratory: the mechanical properties of a material are measured and the results shared among the groups so reach agreement on conclusions.



«If the sanitary conditions does not allow regular academic activities or/and evaluation in the classroom, the on-line teaching will activate, of which the students will be informed promptly.»

• Continuous Assessment System
• Final Assessment System
• Tools and qualification percentages:
  • Written test to be taken (%): 60
  • Realization of Practical Work (exercises, cases or problems) (%): 15
  • Team projects (problem solving, project design)) (%): 25

Assessment in this subject is combined. The exam must be passed with a minimum mark of 5/10 to pass the subject. It is also necessary to complete satisfactorily the practical work to pass the subject. Aptitude and participation during the year also has an impact on the final grade.

A student who, for justified reasons, cannot participate in the combined assessment system (or, as the case may be, the continuous assessment system) may take a final exam in which the practical part will also be assessed. To do this, he/she will notify the professor responsible for the subject in writing within one month of the data set for the assessment of the subject. In this case, the student will be assessed in a single final exam, which will include the practical part and will account for 100% of the grade.

A student who wishes to withdraw from continuous assessment may do so in writing to the professor who teaches the subject, at least one month before the completion of the teaching period for the subject.

If the student does not present him/herself for the written exam, in any of the calls, she/she will be considered to have withdrawn from said call and will appear as "Not Presented".

9th article.

In the extraordinary exam call, a single final exam is the only evaluation system.

The final exam includes both, theoretical and practical parts, it accounts for 100% of the grade.

Basic references:
Vector Mechanics for Engineers: statics, F. Beer, E. R. Johnston Jr., D. Mazurek McGraw-Hill, 2008
Mechanics of Materials, F. Beer, E. R. Johnston Jr., McGraw-Hill, 2009
Mechanics of Materials (Timoshenko), J. Gere, McGraw-Hill, 2006
Fundamentals of Materials Science and Engineering: An Integrated Approach, W. D. Callister D.G. Rethwisch, 3rd edition, Wiley 2007.

Basic bibliography

In-depth bibliography:

Mechanics of Materiales, R.C. Hibbeler, Pearson, 2006

Foundations of Materials Science and Engineering, W. J. Smith, J. Hashemi, McGraw-Hill, 2014

Introduction to the Mechanics of Solids, S.H. Crandall, N.C. Dahl, T.J. Lardner, McGraw-Hill, 1978

In-depth bibliography

Resistencia de Materiales, Timoshenko, James Gere, Editorial ITES, PARANINFO
Mecánica de Sólidos. TJ Lardner - Rarcher, Editorial McGraw-Hill
Mecanica de Materiales, William F. Riley, Wiley
Materials and Sustainable Development, M. F. Ashby, Butterworth-Heinemann, 2015

Web addresses

Ansolaren liburua UEUn:
http://www.buruxkak.org/liburuak_ikusi/205/elastikotasunaren_teoria_eta_materialen_erresistentzia.html
Deformaziogatiko gogortzearen eta tenplearen adibidea:
http://www.roadandtrack.com/car-culture/videos/a31369/heres-how-automotive-coil-springs-are-made/
Elementu finituen metodoa:
https://knowledge.autodesk.com/support/nastran-in-cad/learn-explore/caas/CloudHelp/cloudhelp/2017/ENU/NINCAD-SelfTraining/files/GUID-B63CD966-5467-45A2-BACA-1408418997D0-htm.html
Espagetien haustura-moduak:
https://www.youtube.com/watch?v=ADD7QlQoFFI
http://ocw.mit.edu/OcwWeb/Mechanical-Engineering/index.htm
http://imechanica.org/
http://www.mip.berkeley.edu/physics/bookadx.html
http://memagazine.asme.org/
https://en.unesco.org/sustainabledevelopmentgoals
https://www.datemats.eu/blog/