Student guide Faculty of Engineering A.Y. 2008/09

Computer Aided Design
Aim of the course
The object of the course is to give students a basic understanding of point and rigid body mechanics and the graphical language/rules used in mechanics for representing objects and systems.
The syllabus is divided into three parts: the first part is devoted to point and rigid body mechanics; the second part covers the material necessary to successfully use a two-dimensional vector graphics software program; finally, the third part introduces the fundamental concepts for representing mechanical objects with the conventions of technical drawing, and more specifically through orthogonal projections, using the knowledge of vector graphics acquired in the meantime.
1. Introduction to graphic systems : CAD 2D, 3D, surface modellers, solid modellers, notes on raster graphics.
2. 2D Systems: typical graphic environment, principles of operation, line and circle primitives, graphical and non-graphical attributes of primitives, coordinate systems, working planes, assisted point selection, entity selection, plane view.
3. Entering graphic primitives: arcs, polygons, polylines, Bezier and Spline curves, text, section lining and hatching, attributes.
4. Editing graphic primitives: copy, move, cut, join, bevel, mirror, scale, group (block), explode, separate, graphic libraries.
5. Querying the graphic database: position, distance, attributes, length (perimeter), surface (area).

1. General representation formats: sheet formats, line types and thicknesses, drawing identification details, scale of measurements.
2. Orthogonal projections: principles, projection of simple geometric entities such as points, straight lines, planes, surfaces, revolved and non-revolved solids.
3. Views and sections.


Tutorial exercises
During the course, students will carry out graphical and numerical tutorial exercises on all the topics covered
The final evaluation will consist of a written test and an oral exam on all the topics covered in the course. During the examination, students must demonstrate fluency with the CAD software used during the lectures and tutorial sessions. The examination procedure will be communicated during the course.
Reading list
Lecture notes and tutorial exercises prepared by the lecturer.

Further reading:
Persiani F., Arienna G., Caligiana G., Gentile G., Monno G., Piancastelli L., Saggiani G.M., Tornincasa S., Disegno Tecnico Industriale, Pitagora Editrice Bologna
Giesecke F.E., Mitchell A., Spencer H.C., Hill I.L., Dygdon J.T., Novak J.E., Principless of Technical Drawing, Macmillian Publishing Company
Manuale software CAD
Alonso, Finn, Elementi di Fisica per l'Università,vol.1 Meccanica, Inter European Editions
Encarnacao J., Schlencchtendahl E.G., Computer Aided Design: Fondamenti ed architetture di sistema, Hoepli
Biggioggero F., Giannattasio F., Disegno Tecnico Industriale, Edizioni Città Studi
Norme UNI per il Disegno Tecnico vol. I e II