Skip to main content

SG2126 Non-linear Oscillations and Dynamical Systems in Mechanics 7.5 credits

The student is made familiar with phenomena appearing in nonlinear dynamics and is required to perform certain analysis of nonlinear models with analytical and numerical methods.

Course offering missing for current semester as well as for previous and coming semesters
Headings with content from the Course syllabus SG2126 (Spring 2022–) are denoted with an asterisk ( )

Content and learning outcomes

Course contents

Flows and mappings, state space formulations, geometrical methods, limit sets, bifurcations, Poincaré mappings, chaos.

Intended learning outcomes

After the course the student should be able to:

  • Explain how ordinary differential equations (ODE) and iterated maps give rise to dynamical system.
  • Be able to define the state space, its limit sets and attractors.
  • Explain how the state space dimension limits the possible dynamics.
  • Sketch the limit set and starting from this characterize the main features in the flow of a dynamical system given by ODEs in the plane.
  • Recognize and describe the result of a simulation using the concept of Poincare mapping.
  • Know about and be able to calculate the fractal dimension in a few simple cases.
  • Know about the concept of chaos in dynamical systems and state some properties of a chaotic dynamical system.

Course disposition

No information inserted

Literature and preparations

Specific prerequisites

English B / English 6

Linear algebra, multivariable calculus, ordinary differential equations, basic mechanics, numerical methods.

Recommended prerequisites

No information inserted


No information inserted


No information inserted

Examination and completion

If the course is discontinued, students may request to be examined during the following two academic years.

Grading scale

A, B, C, D, E, FX, F


  • INL1 - Hand in Assignments, 4.5 credits, grading scale: P, F
  • TENA - Examination, 3.0 credits, grading scale: A, B, C, D, E, FX, F

Based on recommendation from KTH’s coordinator for disabilities, the examiner will decide how to adapt an examination for students with documented disability.

The examiner may apply another examination format when re-examining individual students.

Opportunity to complete the requirements via supplementary examination

No information inserted

Opportunity to raise an approved grade via renewed examination

No information inserted


Profile picture Arne Nordmark

Ethical approach

  • All members of a group are responsible for the group's work.
  • In any assessment, every student shall honestly disclose any help received and sources used.
  • In an oral assessment, every student shall be able to present and answer questions about the entire assignment and solution.

Further information

Course web

Further information about the course can be found on the Course web at the link below. Information on the Course web will later be moved to this site.

Course web SG2126

Offered by


Main field of study

Mechanical Engineering

Education cycle

Second cycle

Add-on studies

No information inserted


Arne Nordmark