ADVANCED MECHANICAL TRANSMISSIONS

ECTS credits: 3

Objectives:

On completion of this course, students should be able to analyze the classic problems in gearing for a broad range of practical applications (high-load, high-speed, multi-stage, etc.) and propose solutions to improve static and dynamic performance.

The specific objectives are:

a) to master the basic concepts and models used in gear dynamics,

b) to present the most significant dynamic phenomena associated with spur and helical gears, c) to develop operational skills in gear design (particularly re tooth modifications),

d) to be able to appraise the contributions of shafts, bearings, casings and

e) to apply the theory to some selected industrial case studies

Syllabus:

          1 – Theory:

One-degree-of-freedom models. Introduction to basic phenomena: time-varying mesh stiffness, transmission errors, amplitude jumps, and shocks, unsteady conditions, etc.)

Profile and lead modifications: a multi-objective approach

Extension to 3D models: torsion/bending couplings, an introduction of bearings and casings, numerical solutions, multi-mesh systems.

Presentation and use of the specific software VSA dedicated to the simulation of spur and helical gears.

           2 – Industrial applications:

Examples of actual industrial problems will be tackled and the students will have to propose realistic improvements/solutions (in groups of 3-4 students).