The Course will help the students to increase their capabilities in some fundamental tasks of the mechanical designers, such as the following. A) Capability of applying synthesis techniques to problems in mechanical engineering. This skill will make the students able to design innovative products with methods that are complementary to the classical methods based on material resistance and fatigue. B) Being prepared to the most challenging problems in mechanical design, structure dynamics via FEA , by upgrading their knowledge on fundamental issues of Applied Mechanics that are crucial for the design. C) Capability of applying their skills to the newest fields, such as MEMS/NEMS, Automation, Biomedical and Aerospace applications; D) Capability of designing mechanical components of vehicles, such as, automatic and epicyclic gearbox, differential, suspensions, dampers, steering mechanisms and clutches; E) Creativity in products design, acquired during practical sessions of cognitive techniques, lateral thinking and Atlases consulting.
teacher profile teaching materials
Di Benedetto, A., Pennestrì, E., Introduzione alla cinematica dei meccanismi, CEA, Voll. 1, 2 e 3.
Programme
Introduction to Functional Design: design methods, classification according to Artobolewsky, functional classification: rigid body guidance, function generator, path generator. Topological Analysis and Synthesis of mechanisms: graph-mechanism correspondence; enumeration of kinematic chains, graphs isomorphism and planarity. Kinematic Analysis and Synthesis of mechanisms for finite displacements: method based on the displacement matrices, plane and spatial motions, Freudenstein’s equation. Kinematic Synthesis of mechanisms for infinitesimal displacements: Classical and Generalized Burmester’s Theory, general methods based on geometric invariants and on centrodes; kinematic analysis with kinematic invariants, cognate mechanisms. Automotive: automatic gearbox, epicyclic and differential gear drives, suspensions and steering mechanisms, clutches. Transmissions and actuation: parallel, bevel and skew axis transmissions, joints, principle of inertia match. Lubrication: Elasto-Hydro-Dynamic Lubrication EHL. Dynamic simulation of Multi Body Systems and of continuum structures: methods for the solution of the set of dynamic equations of a MBS with constraints; dynamic simulation of structures via FEA. Compliant mechanisms: Kinematic, kinetostatic and dynamic analysis and simulation of compliant mechanisms. Isotropic compliance: synthesis of the compliance in E(3) and SE(3) for mechanisms and robots. MEMS and NEMS: design, simulation, fabrication, characterization, test and operational strategies of micro/nano electro mechanical systems. Mechatronics: control of mechanisms in dynamic regime, mechanisms for the automation, ratchet and Geneva mechanisms, microcontrollers. Creativity in Design: Atlases of mechanisms, TRIZ and LT. Computational intelligence: optimization of mechanisms for performance indices, pressure angle and mechanical gain.Core Documentation
Materials available on the Moodle platform.Di Benedetto, A., Pennestrì, E., Introduzione alla cinematica dei meccanismi, CEA, Voll. 1, 2 e 3.
Reference Bibliography
Bottema, O. Rorth, B, Theoretical Kinematics, North Holland Pub. Co., 1979Type of delivery of the course
Written and oral test with evaluation of the student’s personal notebookAttendance
Written and oral test with evaluation of the student’s personal notebookType of evaluation
Evaluation of the mechanical design capability for mechanical systems. Comprehension of the theoretical concepts for applied mechanics. Exercises and open questions in written tests. Delivery of the term projects. Oral interview.