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Semestre 5
Intersemestre
Semestre 6
 
 
 
Semestre 7
 
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Semestre 9
 
 
Intersemestre

Course unit

Modelling by finite elements

Last updated: 22/02/2024

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Course Director(s):

DESRAYAUD Christophe

General Description:

Course with supervised studies on the three application fields of the finite element method :

  • Thermics and thermo-mechanics : modelling and solutions to thermal and thermo-mechanical problems by finite elements
  • Structures: introduction of degenerate structural elements such as 2D plate, bending beam, and possibly plate and shell,
  • Biomechanical modelling : modelling of simple biomechanical problems of hypo - or hyper- elastic behaviour and solutions to contact problems

Key words:

Thermics and thermo-mechanics Structures Biomechanics Finite Element method

Number of teaching hours

27

Fields of study

Materials Science Mathematics Mechanical Engineering

Teaching language

English

Intended learning outcomes

On completion of the unit, the student will be capable of: Classification level Priority
Understanding the principles of the finite element method on the basis of weak formulation and the principle of virtual work. 2. Understand Essential
Understanding numerical modelling in thermics and thermo-mechanics 3. Apply Essential
Understanding the mechanical behaviour of degenerated elements such as 2D plate, bending beam, and possibly plate and shell. 3. Apply Essential
Understanding numerical modelling for biomechanical problems with hypo- or hyper-elastic behaviour and contacts 3. Apply Essential

Learning assessment methods

Percentage ratio of individual assessment Percentage ratio of group assessment
Written exam: 100 % Project submission: %
Individual oral exam: % Group presentation: %
Individual presentation: % Group practical exercise: %
Individual practical exercise: % Group report: %
Individual report: %
Other(s): %

Programme and content

Type of teaching activity Content, sequencing and organisation
(inter)active Amphitheatre

Thermics and thermo-mechanics

Simple thermic and thermo-mechanical aspects will be covered, combined with problems solved by the finite element method.

The finite element method will be presented in general, followed by details of the formalism of materials, thermal and mechanical behaviour.

Some examples of coupling will be formalised

The course will consist of 50% of supervised exercises. 

(inter)active Amphitheatre

Structures, 9h

  • The degenerated elements of the 2D plate type, bending beam, and possibly plate and shell, are presented with a theoretical basic notion of the beam and the bending plate.
  • Formulation of finite elements based on the principle of virtual work.

A case study is introduced for each type of element to further understanding.

(inter)active Amphitheatre

This course will present the formalisation of living materials behaviour and their implementation by the finite element method.

Focus on biological membranes, 9h

  • Major deformations, hyper-elasticity, Neo-Hookeen model, variational formulation for a membrane.
  • Non-linear solutions by finite elements, Newton-Raphson, writing tangent matrices, applications to membrane elements.
  • Case study of the geometry of an aneurysm.