曝光台 注意防骗
网曝天猫店富美金盛家居专营店坑蒙拐骗欺诈消费者
as well (Prof. Duysinx).
Man Power: researchers (5) + staff (2)
Research programs for ~500.000 € every
year
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U N I V E R S I T Y o f L i è g e
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AUTOMOTIVE Engineering
INTRODUCTION SIMULATION & OPTIMIZATION CLEAN PROPULSION TECHNO CONCLUSION
SIMULATION AND OPTIMIZATION
U N I V E R S I T Y o f L i è g e
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AUTOMOTIVE Engineering
INTRODUCTION SIMULATION & OPTIMIZATION CLEAN PROPULSION TECHNO CONCLUSION
SIMULATION AND OPTIMIZATION
Researches realized in the tradition of LTAS
Tradition of scientific quality
Tradition of collaborating with industry partners
Development in SAMCEF environment
SAMCEF MECANO for flexible multibody systems
OOFELIE: Object Oriented Finite Element Led by
Interactive Execution: simulation of strongly coupled
multiphysic problems
Boss Quattro: open environment for optimization of
structural, multidisciplinary and multiphysic
problems
Many results are transferred to the SAMCEF codes
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U N I V E R S I T Y o f L i è g e
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AUTOMOTIVE Engineering
INTRODUCTION SIMULATION & OPTIMIZATION CLEAN PROPULSION TECHNO CONCLUSION
SIMULATION AND OPTIMIZATION
Major topics are:
Simulation of vehicle dynamics / engine dynamics
Engine dynamics in extreme and rapid motions
(motor sport for instance)
Vehicle as a mechatronics system: semi-active
suspensions, vehicle dynamics control…
Optimization of structures
Shape
Topology
Generalized shape (Extended Finite Element
Methods)
Multiphysic simulation and optimization of MEMS
(micro electromechanical systems)
U N I V E R S I T Y o f L i è g e
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AUTOMOTIVE Engineering
INTRODUCTION SIMULATION & OPTIMIZATION CLEAN PROPULSION TECHNO CONCLUSION
ENGINE SIMULATION
Flexible multibody simulation
of engines in extreme
conditions (e.g. motorsport)
Verification of engine
elements
Flexibility, buckling,
fatigue of connecting rods
Vibrations and fatigue of
cranckshafts
Collaboration with SAMTECH,
GDTech and Excilis
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AUTOMOTIVE Engineering
INTRODUCTION SIMULATION & OPTIMIZATION CLEAN PROPULSION TECHNO CONCLUSION
VEHICULE MECHATRONICS
Integrated simulation of flexible
multibody systems and their
control systems
Unified formulation of controlled
multibody dynamics using F.E.
and block diagram formalism
Reduced-order strategy of
multibody systems for control
strategy synthesis
Example: simulation of the
dynamics of a semi-active shock
absorber
Technology transferred to
OOFELIE package
0 1 2 3 4 5 6
−6
−4
−2
0
2
4
6
8
x 106
time (s)
dP/dt (Pa/s)
Rebond chamber
Compression chamber
U N I V E R S I T Y o f L i è g e
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AUTOMOTIVE Engineering
INTRODUCTION SIMULATION & OPTIMIZATION CLEAN PROPULSION TECHNO CONCLUSION
TOPOLOGY OPTIMIZATION
Topology optimization is
formulated as an optimal
material distribution (Bendsoe &
Kikuchi, 1988)
Numerous contributions to the
problem:
Stress constraints
Optimization algorithms able
to solve very large scale
problems
Perimeter constraints
Discrete 0/1 variables
...
Applications to industrial
problems e.g. Airbus Industries
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U N I V E R S I T Y o f L i è g e
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AUTOMOTIVE Engineering
INTRODUCTION SIMULATION & OPTIMIZATION CLEAN PROPULSION TECHNO CONCLUSION
TOPOLOGY OPTIMIZATION
Topology optimization of the number/position of welding
spots
Topology optimisation
with 0/1 variables
(Beckers & Fleury, 1998)
Minimise number of
welding spots
s.t. displacements
constraints
U N I V E R S I T Y o f L i è g e
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AUTOMOTIVE Engineering
INTRODUCTION SIMULATION & OPTIMIZATION CLEAN PROPULSION TECHNO CONCLUSION
GENERALIZED SHAPE OPTIMIZATION WITH XFEM
Novel Finite Element method to capture variable
boundary problems like fracture propagations,
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