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Disegno Assistito dal Calcolatore
Computer Aided Design
Ferruccio Mandorli

Seat Ingegneria
A.A. 2016/2017
Credits 6
Hours 48
Period II
Language ENG

Prerequisites
None

Learning outcomes
KNOWLEDGE AND UNDERSTANDING:
The course allows the students to acquire the necessary technical knowledge required to develop digital models of solid objects and free-form surfaces. This knowledge will allow the student to acquire the skill required for the development and the efficient use of geometric models to support the different tasks related to the product development process.
CAPACITY TO APPLY KNOWLEDGE AND UNDERSTANDING:
For the purpose of addressing the design and productive issues through the implementation of the acquired skills, the student will have to be able to summarise and represent the results of the design activity using appropriate and updated methods, techniques and tools. This ability will be acquired through a series of professional skills such as: the ability to define 3D geometric models of components and assemblies by means of hybrid modelling techniques, which integrate the use of surface modelling and solid modelling systems; the ability to exchange the developed geometric models among different geometric modelling and analysis systems.
TRANSVERSAL SKILLS:
In their professional activity, especially in the industrial sector, engineers need to communicate information, ideas, problems and solutions to other technical interlocutors; a significant part of this information is geometric information and it needs the application of rigorous methods for its representation. The practical exercises which consist in the creation of geometric 3D models require, for their development, the application of methods which stimulate and transmit to students the methodological rigour aimed at developing the attitude towards a logic reasoning strongly based on the scientific method and to train and reinforce concentration skills.

Program
Role of geometric models in the product development process: characteristics and classification of MCAD systems; characteristics of the surface, solid and hybrid models; type of user interaction supported by the different types of systems; application fields of the MCAD technology; criteria for the quality and usability assessment of 3D geometric models in industrial processes; criteria and techniques to support standardization, modification and re-use of geometric models. 3D geometric modelling techniques: free-form surface modelling techniques (patch modelling, global deformation modelling); solid modelling techniques (feature-based parametric modelling; explicit modelling). Interoperability of models: integrated systems, optimization methods for data exchange, types of exportable data, formats of data exchange. Production of technical documentation: production of 2D technical tables, definition and automatic filling of the legend and the bill of materials; production of realistic images and animations; integration of 3D models in technical documents. Use of CAD systems for surface modelling and solid modelling for the development of integrated projects.

Development of the examination
LEARNING EVALUATION METHODS
The assessment of the students' learning level consists in the production and oral presentation of a modelling project. The project is chosen by the student and it must be developed autonomously by means of using different types of 3D MCAD systems. The student must submit all the files related to the developed project (component models, general models, technical drawings, any rendering and animations) and he/she must compile a short report on the performed work according to a preset template; the files can be delivered on a CD-ROM or they can be uploaded on the eLearning platform of the course.

LEARNING EVALUATION CRITERIA
The marking of the project takes into account the following factors: complexity and quality of the surface models (i.e. free-form components with double curvature); correct parametrization of solid components (i.e. use of dimensions in the sketch); complexity and quality of the assembly model; clarity and accuracy of the technical drawings; level of integration between solid and surface models; employment of advanced modules and functionalities. In order to pass the exam the student has to prove, through the project, his/her correct understanding of the aspects related to the development of geometric models to be employed in the product development processes, with particular reference to the combined use of solid and surfaces models.

LEARNING MEASUREMENT CRITERIA
The grading scale is from 1 to 30. In order to get a sufficient evaluation (18/30), the student must prove, through the project, to have acquired a sufficient skill in the use of 3D geometric modeling systems. The mark increases accordingly with the project complexity and with the demonstration that the student has acquired enough competency in order to understand the issues related to the development of 3D geometric models that will be usable within the product development processes. The maximum mark (30/30 cum laude) is reserved only to the students who have developed a very complex project, showing a deep understanding of the techniques and the issues related to the development of integrated models.

FINAL MARK ALLOCATION CRITERIA
The final mark is computed by starting from the mark of the project evaluation and by adding or subtracting a maximum of 2 points, depending on the quality of the oral presentation.

Recommended reading
Papers and documents handed out during the course and material available on the eLearning platform (https://lms.univpm.it)

Courses

• Ingegneria Meccanica (Corso di Laurea Triennale (DM 270/04))