Course Objectives: a) knowledge of the Solid Modeling concepts (knowledge and understanding), b) operational knowledge of the main commands of a last-generation software 3D (applying knowledge and understanding), c) knowledge of basic rules to design a three-dimensional assembly by CAD3D (knowledge, applying knowledge, understanding, making judgements).

Basic Descriptive Geometry and technical drawings knowledge is recommended

- Basics of Solid Modelling Geometric elements: planes and profiles, constitutive elements of the sketches, geometric constraints, parametric-variational profile, under and over constrained sketches. - Virtual extrusion of a sketch. Type of modelling relative to CAD 3D. Analogy with chip-forming machining. Main virtual machining in Solid Modelling. Boolean operations (addition, sum, subtraction) to generate complex solid solids starting from simple and separate solids. Positioning constraints between distinct solids (parallelism, concentricity, coincidence, etc.). -Virtual features Modeling possibilities offered by 3D CADs applied to solids generated by virtual extrusion. Main types of features of solid modeling software: cylindrical hole and pin, shaped hole, drilling of edges, faces, and solids, shell, beveled corners, threading, cutting operation and patterns. - General guidelines for solid modelling, file formats. - Modelling of 3D assemblies: organization of the work. Rule to save the modelled solid and the assembly with reference to the automatic updating of particulars defined in the same assembly. - Importing/exporting of virtual solids in IGES and STEP format: some features of these formats and their use in numerical simulations (CAEs). STL format and stereolithography. Possibility of converting files into different formats for transferring CAD 3D modeling from different CAD3D software. - Illustration of the main commands and characteristics of a last-generation parametric-variational CAD3D PRACTICE Fifty percent of the time is reserved for exercises. During practice students perform some solid modeling by using the software modelling. The main commands of the software are illustrated in the operational context of a real modeling of some mechanical parts.

Principles of CAD/CAM/CAE Systems, Kunwoo Lee, Addison-Wesley, 1999. Modelli Geometrici in Computer Graphics, Michael E. Mortenson, McGraw-Hill, 1989. Progettare con CATIA V5, Daniela Vignocchi, Athena Audiovisuals; 3 edizione (2009). Additional material is availble on the web page of the course (https://moodle2.units.it/)

- Basics of Solid Modelling Geometric elements: planes and profiles, constitutive elements of the sketches, geometric constraints, parametric-variational profile, under and over constrained sketches. - Virtual extrusion of a sketch. Type of modelling relative to CAD 3D. Analogy with chip-forming machining. Main virtual machining in Solid Modelling. Boolean operations (addition, sum, subtraction) to generate complex solid solids starting from simple and separate solids. Positioning constraints between distinct solids (parallelism, concentricity, coincidence, etc.). -Virtual features Modeling possibilities offered by 3D CADs applied to solids generated by virtual extrusion. Main types of features of solid modeling software: cylindrical hole and pin, shaped hole, drilling of edges, faces, and solids, shell, beveled corners, threading, cutting operation and patterns. - General guidelines for solid modelling, file formats. - Modelling of 3D assemblies: organization of the work. Rule to save the modelled solid and the assembly with reference to the automatic updating of particulars defined in the same assembly. - Importing/exporting of virtual solids in IGES and STEP format: some features of these formats and their use in numerical simulations (CAEs). STL format and stereolithography. Possibility of converting files into different formats for transferring CAD 3D modeling from different CAD3D software. - Illustration of the main commands and characteristics of a last-generation parametric-variational CAD3D

Frontal lessons by using software CAD3D and practical exercises

Softwares: SolidWorks/ CATIA V5/ Autodesk Inventor

Final examination: execution of a solid modeling of a mechanical part (evaluation of knowledge and understanding, making judgements, and communication skills)

This course explores topics closely related to one or more goals of the United Nations 2030 Agenda for Sustainable Development (SDGs)