novembre 20071

novembre 20072

1. Short overview

2. How we make it

3. Focuses on capabilities

4. Goals and stakes

5. How to get it

Code_Aster / Salomé_Méca

novembre 20073

1 Short overview

An all-purpose FEM simulation software for structural ana lysis :

Plugged in a user-friendly environment : Salome_Meca

novembre 20074

1 Short overview of Code_Aster

A large scope of capabilities

• Thermal and mechanical

• Statics and dynamics, linear or not

• Modal analysis, harmonic and random response

• ≈ 400 finite elements : 3D, 2D, shells, beams, pipes …

• Wide range of loadings

• Interaction with other physics (coupled or not) : fluid, soil structure computation, electro-magnetism …

novembre 20075

1 Short overview of Code_Aster

Non linearities and specific models

• Contact, friction

• Large displacements, large deformations

• Behaviour models (≈ 100 constitutive laws)

• Porous media, fracture mechanics, damage,

fatigue, welding, seismic analysis …

novembre 20076

1 Short overview

A solver plugged in Salome environment

novembre 20077

1 Short overview

A solver plugged in Salome environment

novembre 20078

2 Why we make it

Specific requirements of nuclear industry

• Regulatory design, safetySpecific problems : ageing of structures, re-evaluation of margins

• Stakes differ from manufacturing industry and software vendors.Research and developments

• Capitalization of know-how and models, quick transfer to engineering • Mastering of source code, models …

Choice of in-house development

novembre 20079

2 How we make it (some figures)

60 releases each year

200 in-house users

1.256 documents freely available (13.800 pages)

15 PHD for the 8 last years

250 new features in the code in 2007

2.000 tests runned for each release

200.000 CPU hours

4 training sessions, 40 listeners each

ASTER as a free software : 30.000 downloads, 10. 000 hits a week

novembre 200710

2 How we make it

0

200

400

600

800

1000

1200

1400

1600

1800

2000

07/89 07/90 07/91 07/92 07/93 07/94 07/95 07/96 07/97 07/98 07/99 07/00 07/01 07/02 07/03 07/04 07/05 07/06

source lines x 1.000

nb tests

nb doc pages x 10

nb in-house users

CPU hours x100

Version 4 avr. 98

Version 6nov. 2002

Version 2 oct. 93

Version 5oct. 2000

Version 3juin 96

miseen libre

Version 7déc. 2004

Version 8déc. 2006

novembre 200711

2 How we make it

A network of programmers (like a free software)

• A core team in charge of : kernel development, integration, distribution … [~20 engineers.year]

• Applicative projects : bring new models / developements [~40 engineers.year]

• Continuous process : no V cycle, no predefined specifications• A life cycle of 2 years : the developped version is transfered to

engineering after a qualification process

novembre 200712deplacement du point central (face superieure)

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COURBE FORCE / DEPLACEMENT

agraf 13/03/2001 (c) EDF/DER 1992-1999

0

50

100

150

200

250

300

0 5 10 15 20 25 30x10- 4

3 Focuses on capabilities (1/5)

0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95 1.00

AMPLITUDE DEFORMEE

1.00E+02

Endommagement

Structure finite elements

Contact-friction

Large deformations/rotations

Driving forces and displacements …

novembre 200713

3 Focuses on capabilities (2/5)

Damage

Fracture

Fatigue…

novembre 200714

VAL ISO

>-5.63E+02

< 9.61E+02

-5.51E+02

-4.79E+02

-4.08E+02

-3.36E+02

-2.65E+02

-1.94E+02

-1.22E+02

-51.

21.

92.

1.63E+02

2.35E+02

3.06E+02

3.78E+02

4.49E+02

5.20E+02

5.92E+02

6.63E+02

7.35E+02

8.06E+02

8.77E+02

9.49E+02

AMPLITUDE

DEFORMEE

5.00E+03

3 Focuses on capabilities (3/5)

Dynamics

Acoustics

Fluid forces

SFSI, SSI…

novembre 200715

3 Focuses on capabilities (4/5)

Porous media and geomaterials

Civil engineering

Concrete…

novembre 200716

3 Focuses on capabilities (5/5)

Multi-scale

Multi-physics

Coupling and

chaining …

novembre 200717

3 Focuses on capabilities : samples

• 3D simulation of excavation, damage, re-saturation and Darcy flow in a waste storage repository ,

• Deformations of a complete core during several irradiation cycles,

• Extension and stop of a crack in a pressure vessel after a thermohydraulic transient,

• Computation of the leak flow in the containment ,• 3D crack propagation in a rotor ,• Simulation of a complete shaftline …

novembre 200718

4 Goals and stakes

High performance computing

• Increasing size of models

• Super-computer trends

Partnership policy

• Free software consortium

• Research partnerships

Interoperability

• Easy coupling with other physics in Salomé environment

Management

• Simulation process : user-friendly, quality and reliability

• While Code_aster remains the place in which we capitalizeresearches

http://www.code-aster.org

novembre 200719

5 How to get Code_Aster stand alone ?

novembre 200720

5 How to get Code_Aster stand alone ?

novembre 200721

5 How to get Salome_Meca ?

We are not in charge of the « free » distribution

… but we can give it to partners or to whoever wants to distribute it.

For instance : www.caelinux.com

novembre 200722

Thanks