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8/12/2019 Pages 31 46 de Pres Mca Iset Sousse Jan 2014-PDF-3
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Multi-Physic Intelligent Systems Modeling & Analysis
Performance Prediction of multidisciplinary complex
equipments Optimization of functioning
Simulation & Numerical Analysis
1D Modeling & Simulation
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Numerical Simulation
Descript ion :
Starting from technical specifications setting out the mesh quality, CAD files inputs are preprocessed to meet the requirements
of the calculations to be done (Crash, EMC, RF, Rheology, ..).
Deliverables are mesh files formatted according to the specifications and quality requirements.
Meshing :
CEM meshing
Rheologic meshing
Meshing of moving assembly
Crash meshing
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Numerical Simulation
Description :
Projects in linear static and dynamic calculations are intended to :
-Check the strength of a mechanical component or structure when submitted to service loads and stress, if required, the
necessary reinforcements are proposed,
-Optimize the thickness of the used shapes and materials to save weight and costs.
Deliverables are reports and calculation notes with CAD files of the modified and optimized part or assembly.
Static and Dynamic Simulation
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Results of the Disassembly phase :
Stress level and reaction force
23493Elements
42778Nodes
These faces are clamped
Clip
0
5
10
15
20
25
30
35
40
45
0 0,05 0,1 0,15 0,2 0,25 0,3 0,35
Time (s)
Stresses
(MPa)
-5
0
5
10
15
20
25
30
ReactionF
orce(N)
Stresses (Mpa)Reaction Force (N)
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Lot 9: This lot is about the modal
analysis of the ACC pointer
6900Element
17472Node
0.0001.3590.0001448.210
0.0000.0180.0281443.190.0000.0000.045970.58
0.0021.1320.000877.17
0.1320.0090.000869.56
0.0000.0000.001453.15
0.0010.0001.927226.44
1.7750.0250.001217.43
0.8900.0140.000150.22
0.0000.0000.747147.61
Z(g)Y(g)X (g)(Hz)
EFFECTIV MASSFREQUENCYMODE
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Numerical Simulation
Example : Truck trailer
This study concerns the validation of the strength of the entire trailer structure and the optimization of the metal sheets
thickness :
1)Meshing of the entire structure
2)Verification of the stress values under maximum load in static case and during start / brake phases.
3)Check out the modal frequencies.
4)Optimization of thickness (300 Kg of weight were saved)
Static and Dynamic Simulation
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Numerical Simulation
Example : Multi-blades spring
This study concerns the assessment of the spring flexibility (in mm/100Kg), starting from a CAD file. Then, making the
necessary modifications to the spring shape to reach the targeted flexibility.
Thanks to this study COTREL reduced the number of physical test prototypes from 7 to only 1.
The deviation between the calculated and measured values of flexibility was around 1%.
Static and Dynamic Simulation
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Static and Dynamic Simulation
Stress Analysis of a test bench
for Satellite
Numerical Simulation
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Area : Numerical Simulation
Description :
Projects in linear static and dynamic calculations are intended to :
-Check the strength of a mechanical component or structure when submitted to service loads and stress, if required, the
necessary reinforcements are proposed,
-Optimize the thickness of the used shapes and materials to save weight and costs.
Deliverables are reports and calculation notes with CAD files of the modified and optimized part or assembly.
Static and Dynamic Simulation :
Simulation of the forced vibration of a
braking console of a airplane
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Numerical Simulation
Description :
The rheological simulation projects are intended to determine the optimum conditions to meet the injection time cycle desired
by the client. This simulation concerns : the choice of the position and shape of the injection gates, cooling of the mold,
prediction of deformed shape after the molding, prediction of fiber orientation, shrinkage, weld lines, ..
Rheological simulation
Calculation of the filling time of a
BSM flange
Dimensioning of the cooling
circuit
Prediction of the fibers orientation ofthe Division bar
Prediction of the deformed shapes
of a division bar
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Multi-Physics Modeling & Analysis
+
=
+
2
2
zr
r
1kuu
z
T
r
Tr
rz
T
r
TCp ( )
+
+
+
+
+
u
uu
1u2
22
z
2
r
2
r
z
u
rzrr
rz
Numerical Simulation
CFD Simulation of a defrost valve
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Thermal Analysis
Numerical Simulation
Thermal Analysis of a Electronic device
for Telnet Innovation Labs
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CFD Simulation
Numerical Simulation
CFD Simulation of a exhaust tube
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Conclusion
La simulation numrique, tout domaines confondus, est
un outi l essentiel pour la matrise de la technologie et un
atout important pour le dveloppement de notre pays
dans lre de lconomie numrique.
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Thank you