2020-2021 / MECA0155-2

Dynamics of mechanical systems

Duration

26h Th, 26h Pr, 5h Labo., 10h Proj.

Number of credits

 Bachelor of Science (BSc) in Engineering5 crédits 
 Master of Science (MSc) in Aerospace Engineering5 crédits 
 Master of Science (MSc) in Mechanical Engineering (EMSHIP+, Erasmus Mundus)5 crédits 

Lecturer

Jean-Claude Golinval

Language(s) of instruction

French language

Organisation and examination

Teaching in the first semester, review in January

Schedule

Schedule online

Units courses prerequisite and corequisite

Prerequisite or corequisite units are presented within each program

Learning unit contents

The course provides the fundamentals of the dynamics of mechanical systems.
Course outline

  • Review of Lagrangian and Newtonian dynamics and application to simple mechanical systems.
  • Single and multiple degrees-of-freedom systems: fundamentals(resonance frequency and mode-shape), response prediction to forced excitations.
  • Continuous systems and discretisation methods.
  • Dynamic behavior of rotating machines: critical speeds, balancing methods.
The theoretical concepts will be illustrated through hands-on exercices. One project will be assigned during the course semester.

Learning outcomes of the learning unit

The objective is to give to the students a solid background in the modelling and the simulation of the dynamical behavior of mechanical structures. Typical vibration problems encountered in mechanical systems and rotating machines will illustrate the theory.

Prerequisite knowledge and skills

This course requires basic knowledge of fundamental calculus, differential equations and applied mechanics.

Planned learning activities and teaching methods

The course will also propose practice exercises and homeworks.

Mode of delivery (face to face, distance learning, hybrid learning)

face-to-face and distance learning (see organizational remarks).

Organisational adjustments related to the current health context

If the sanitary conditions do not allow to be present at the university, the exam will be organised orally by visio-conference.

Recommended or required readings

Dynamique des systèmes mécaniques
Edited by the Centrale des Cours de l'AEES

Assessment methods and criteria

The final grade is based on the written examinations and on the homework reports. No document is allowed during the examinations.
A. Written examination of theory (30%) The theory examination consists in:

  • answering to one question of theory drawn in the list available on eCampus;
  • giving some brief definitions and/or answering to a multiple-choice questionnaire.
B. Practical written examination (40%) The practical written examination consists in solving exercices similar to those given during the semester.
C. Project (30%)
Written reports on the proposed homeworks are mandatory. The note of the homeworks is taken into account for the second session but is not reported in case of final failure.  
There is no partial exemption for the examinations.

Work placement(s)

Organizational remarks

The organisation will be explained in details during the first lecture.

Contacts

Jean-Claude Golinval (JC.Golinval@uliege.be)
Assistant : Elise Delhez (elise.delhez@uliege.be)