Multibody Dynamics
Flerkroppsdynamik

FMEN02, 7.5 credits, A (Second Cycle)

Valid for: 2024/25
Faculty: Faculty of Engineering LTH
Decided by: PLED M
Date of Decision: 2024-04-09
Effective: 2024-05-08

General Information

Depth of study relative to the degree requirements: Second cycle, in-depth level of the course cannot be classified
Elective for: BME4, F4, F4-bem, M4-bem, Pi4-bem
Language of instruction: The course will be given in English

Aim

• provide knowledge of the basic theory of the dynamics of multibody systems consisting of rigid bodies as well as simple flexible bodies.
• give insight in the numerical analysis of the equations of multibody dynamics.

Learning outcomes

Knowledge and understanding
For a passing grade the student must

• be able to give an account of the most important results in the theory of multibody dynamics.
• be able to formulate theoretical models for systems of connected rigid bodies and simple elastic bodies.
• have knowledge of the commercial computer programmes that are available.

Competences and skills
For a passing grade the student must

• be able to analyse certain simple multibody systems with the aid of computer programmes (Mathcad, FEM, MBS-programmes).
• be able to perform an analysis of a multi-body system and to present the results in a well-written report.
• be able to describe some technical problems in industrial applications that can be studied with multibody dynamics.

Judgement and approach
For a passing grade the student must

• be able to evaluate achieved results based on the problem formulation at hand as well as physical limitations.

Contents

Rigid body kinematics and dynamics; Euler angles,etc, inertia tensor, Euler equations, Energy and Effect. Fixed-axis rotation; reaction forces, dynamic balancing, stability, Gyroscopic movement.d'Alemberts principle. Lagranges equations; constraints, degrees of freedom, Lagrange function, generalized forces.Multibody systems; holonomic and non-holonomic constraints,contact forces, friction, loss of effect. Lagranges equations with constraints. Rigid and flexible bodies in systems;discretization and coordinate representation mass- and stiffness-matrices. Equations of motion, construction and numerical treatment.Computer programmes; ADAMS, Matlab.

Examination details

Grading scale: TH - (U, 3, 4, 5) - (Fail, Three, Four, Five)
Assessment: Hand in exercises and written exam.

The examiner, in consultation with Disability Support Services, may deviate from the regular form of examination in order to provide a permanently disabled student with a form of examination equivalent to that of a student without a disability.

Modules
Code: 0115. Name: Multibody Dynamics.
Credits: 7.5. Grading scale: TH - (U, 3, 4, 5).

Admission

Assumed prior knowledge: Basic courses in Mechanics, Linear Algebra and Calculus in One Variable and Several Variables.
The number of participants is limited to: No
Kursen överlappar följande kurser: FMEN01 FME071 FME120

Reading list

• Lecture Notes.
• Lecture notes.

Contact

Course coordinator: Prof. Aylin Ahadi, aylin.ahadi@mek.lth.se
Course homepage: https://www.mek.lth.se

Further information