11361 - Computer Aided Design

Learning outcomes

At the end of the course, students will know the most important software to design, manufacture, analyse and measure on the market; he will know their obtainable results ad limits and he will acquire the skills to use them.

Course contents

• INDUSTRIAL PRODUCT
  Definition and Product Components; Product Lifecycle; Product Cost; Time-to-Market; Product Complexity; Design and Simulation; Digital Mock-up; Virtual Prototyping; Computer Integrated Manufacturing (CIM); Product Data Management (PDM); Product Lifecycle Management (PLM); CAD-CAM-CIM; Industrial Design; Design Process; Sequential and Simultaneous Engineering; Design Output.
  
• FUNDAMENTALS OF CAD
  Architecture of a CAD System; The CAD System; Basic CAD Functionalities; Modeling and Simulation; Advantages and Disadvantages of CAD.
• EVOLUTION OF CAD
  Historical Evolution of CAD; 2D Drafting System; Wireframe Modeling; 3D Solid Modeling: Boundary Representation, Primitive Instancing, Constructive Solid Geometry (CSG), Hybrid Modeling, Spatial Decomposition (Voxel and Octree), Sweep Representation, Feature-Based Modeling; Regularized Operators (Boolean Operations); Basic 3D Functions: Extrusion, Sweep, Loft.
  
• 3D MODELING IN SOLIDWORKS
  Part Design: Extrusion, Revolution, Sweep; 2D Sketch: Geometric and Dimensional Constraints; Reference Geometries (Planes); Extruded Cut; Advanced Auxiliary Commands: Hole Modeling, Fillets and Chamfers, Mirror, Hollow, Pattern, Offset.
• TOLERANCES AND SURFACE FINISHING IN CAD:
  Dimensional tolerances; shaft/hole fits; geometric tolerances; roughness.
• 2D DRAWING CREATION
  Importance of 2D Drawing; Definition of Views; Section Views; Dimensioning; Dimensional Tolerances, Geometric Tolerances, Roughness.
  
• ASSEMBLY MANAGEMENT IN SOLIDWORKS:
  Assembly procedure; assembly mates; component identification; modification of component display/position; assembly tools.
• INTRODUCTION TO SOLIDWORKS TOOLS:
  Finite Element Analysis (FEA), Computational Fluid Dynamics (CFD), Rendering, Kinematic Analysis.
  

Readings/Bibliography

E. Chirone, S. Tornincasa, “Disegno tecnico industriale” vol. 1 e vol. 2, Il capitello.

William E. Howard and Joseph C. Musto "Introduction to Solid Modeling Using SOLIDWORKS 2018", Mc Graw-Hill.

C. McMahon and J. Browne "CADCAM from principles to practice" Addison-Wesley

M. B Mortenson "Modelli geometrici in computer graphics", Mc Graw-Hill.

Teaching methods

Theoretical lessons followed by in-class exercises carried out directly by the Professor, characterized by increasing difficulty. A teaching tutor will be present in the classroom to support the completion of the exercises.

• During the exam, students must demonstrate that they have completed all the exercises. To this end, students are required to upload their exercise solutions to the 'Virtuale' platform. Only those who have successfully completed all the exercises will be eligible to take the practical test at the CAD;
• Both the Professor and the tutor reserve the right to randomly verify the actual completion of the exercises, with the possibility of excluding students from the final test if their solutions are found to be 'empty'.
  
  
  

Assessment methods

The assessment of learning is structured as follows:

1. Completion of In-Class Exercises: This is a mandatory requirement to participate in the written test. Random checks will be conducted to verify the correct upload of solutions and completion of exercises;

2. Exam: at the CAD laboratory, students will interpret a comprehensive 2D drawing and extract one or more components. They will then proceed to create a 3D model of the component(s) and produce the corresponding technical drawing in orthogonal projection. The drawing should include multiple views, dimensions, and tolerances. The maximum grade for this test is 30.

3. Optional Oral Examination: Students have the option to undergo an oral examination to redefine their written test score. The oral exam may lead to an improved or lowered grade and will cover theoretical topics discussed in class, as well as commentary on exercises.

Office hours

See the website of Antonio Bacciaglia