ID:
39219-2
Dettaglio:
SSD: Applied Mechanics for Machinery
Duration: 48
CFU: 6
Located in:
DALMINE
Year:
2025
Course Catalogue:
The goal of the course is to provide principles and methods for the functional design and dynamic modeling of mechanical systems for motion transformation.
Mechanical Systems Engineering, Machine Design.
Lectures + exercises in computer lab
Project reports and final oral exam
Characteristics of mechanical systems for motion transformation ; analysis of their types.
Transmission quality and synthesis parameters depending on the type of mechanical systems for motion transformation.
Motion laws in adimensional form.
Characteristic kinematic coefficients of motion laws.
Motion laws with constant acceleration; symmetric and asymmetric motion laws; cubic motion laws.
Motion laws that reduce overloads in the case of vibrating loads.
Jerk profile, jerk coefficient, influence of discontinuity in motion laws on dynamic overloads of vibrating loads.
Cycloidal motion laws, polynomial motion laws, seven-parameter motion law.
Optimal motion laws with high continuity.
Planar articulated systems; synthesis of four-bar linkages and crank-rocker mechanisms for quick return solutions; synthesis of mechanisms with dwell; force multiplier mechanisms; introduction to analytical synthesis; concept of dyad; analytical synthesis of four-bar linkages generating trajectories and rigid motions in the plane.
Planar and spatial mechanical systems with multiple degrees of freedom; transmission quality; calculation of the Jacobian and methodologies for evaluating transmission quality; force and velocity ellipsoids; notes on dynamic modeling of these mechanisms. Application examples: SCARA, five-bar linkage, Clavel Delta robot.
Introduction to planar epicyclic gear trains, Willis formula; efficiency of differential epicyclic gear trains and combinatorial gear trains.
Automotive suspensions; main types and synthesis criteria; active suspensions.
Optimization methods applied to the design of mechanisms.
If the course will be delivered in mixed or completely remote form, some changes could be introduced in the syllabus in order to make the course, and the relevant exam, feasible also in this way.