Valerio Cibrario
LMS Italiana, Automotive Industry Solutions
Advanced Technologies in Driving Dynamics Performances
LMS Ride and Handling Advanced Seminar, Beijing, 2012 18th -20th
Integration with controls Improved virtual
& physical
copyright LMS International -
2012
CONCEPT
(CAE)DEVELOPMENT (CAE based functional engineering)Engineering CAE Product
Validation
REFINEMENT
(proto test)Engineering TEST DESIGN (CAD, manuf.eng…)
STYLING (interior & exterior)Design PROTO MANUF.PROD.
RAMP-UP
Hardware Pilot GOALS DELIVERABLES TASKS Translate customer expectations (VoC) into engineering targets Benchmarking & Target Setting Targets
copyright LMS International -
2012start SOP
Freeze prototype Benchmarking &
Brand Targets Market (CAE)(CAE based functional engineering)Engineering CAE Product
Validation
REFINEMENT (proto test)Engineering TEST Body Engineering Freeze
up Prod.GOALS DELIVERABLES TASKS Provide chassis variants Obtain accurate functional performance predictions Suspension architecture definition & Chassis subsystem development R&H performances Suspension components definition CAE copyright LMS International -
2012
CAE Design & Development
start SOP Freeze prototype Benchmarking &
Brand Targets Market CONCEPT
(CAE)(CAE based functional engineering)Product
Validation
REFINEMENT (proto test)Engineering TEST PROTO MANUF.PROD.
RAMP-UP
Hardware 8
Pilot Body Engineering Freeze
up Prod.GOALS DELIVERABLES TASKS Improved confidence for R&H performances Detailed suspension components characteristics Refinement for Ride-comfort,Harshness & Shimmy Frontoloading to provide
early inputs to Design
Integration with other performances (road noise, durability, crash, ...)Multi-attribute optimization Front seat p-p acc X-dir Front seat p-p acc Z-dir Max Strng Whl Disp (tangent) Peak Frequency Fr Seat Center Noise 2nd seat
Center Noise Seatrail Vibr
Z-dir
?dB(A)?dB(A)?dB
-0.12-0.36-0.11
decrease -0.55-0.290.01
0.030.060.02
Effect
Harshness Shimmy Road Noise
Sensitivity values
For each chassis
attribute For each chassis
copyright LMS International -
2012
start SOP
Freeze prototype Benchmarking &
Brand Targets Market CONCEPT
(CAE)DEVELOPMENT (CAE based functional engineering)Engineering TEST DESIGN
(CAD, manuf eng…)STYLING (interior & exterior)Design Hardware Body Engineering Freeze
up Prod.GOALS DELIVERABLES TASKS Vehicle ready for
production
Prototype refinement Final tuning on the road Input to design for production freeze copyright LMS International -
2012
Benchmarking &
Brand Targets Market CONCEPT (CAE)DEVELOPMENT (CAE based functional engineering)Engineering TEST DESIGN
(CAD, manuf eng…)
STYLING (interior & exterior)Design Hardware Freeze
GOALS DELIVERABLES TASKS Confirmation of
product suitability for SOP
Validation/Homologation tests Status against in-house targets and exterior regulations
11Vehicle Dynamics Ride & Handling,
Scenario’s (roads, traffic,
Body & Powertrain Vehicle Dynamics
, AFS, EAS,
MiL, SiL and HiL Chassis Loads &
Durability Road Noise, Ride Comfort Steering Systems Braking Systems Suspension & Anti-roll, Axle,
Wheel Guidance, Tires,
Suspension Packaging, “smart” systems Advanced Driver Assistance Systems (ADAS) –Research activity only Guidance & Maneuvering, Environment Modeling,Virtual Validation, Active Safety Multi-Attribute balancing Road-noise, Drive Comfort,
Ride & Handling, Durability Driving Dynamics
The right tools for the right purpose!
Model complexity
M o
d e
l i n g
a c c u r
a c y 3D MBS 3D MBS/FEA
1D functional models 3D MBS rigid bodies flexible bodies non-linear
Real-Time enabling
https://www.doczj.com/doc/295352191.html,b https://www.doczj.com/doc/295352191.html,b
Vehicle Dynamics
Ride & Handling, Scenario’s (roads, traffic, Body & Powertrain
Vehicle Dynamics
, AFS, EAS, MIL, SIL and HIL Chassis Loads & Durability
Road Noise, Ride Comfort
Steering Systems
Braking Systems
Suspension & Anti-roll, Axle,
Wheel Guidance, Tires,
Suspension Packaging,
“smart” systems
Multi-Attribute balancing
Road-noise, Drive Comfort,
Ride & Handling, Durability
Advanced Driver Assistance Systems (ADAS)
Guidance & Maneuvering,
Environment Modeling, Virtual Validation, Active
Safety13
Success Story: Robert BOSCH
Validation of new design concepts
Use identification facilities in order to estimate unknown parameters
Use of Monte Carlo methodology in order to analyze effect of uncertainties.
15
“LMS https://www.doczj.com/doc/295352191.html,b AMESim model can be used to provide an accurate prediction of brake system response at the design stage thereby saving time and cost.”
Allan Johnstone –Honda R&D (UK) Europe
Andrew J. Day -University of Bradford (UK), SAE Paper 09BC-0077
LMS Track.Test
20
Tork Engineering adopted LMS https://www.doczj.com/doc/295352191.html,b Motion for racecar CAE modeling ....
Simulations of suspension or of a complete vehicle are produced using LMS https://www.doczj.com/doc/295352191.html,b Motion.
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LMS for Vehicle Driving Dynamics –
Vehicle Dynamics
Ride & Handling, Scenario’s (roads, traffic, Body & Powertrain
Vehicle Dynamics
, AFS, EAS, MIL, SIL and HIL Chassis Loads & Durability
Road Noise, Ride Comfort
Steering Systems
Braking Systems
Suspension & Anti-roll, Axle,
Wheel Guidance, Tires,
Suspension Packaging,
“smart” systems
Multi-Attribute balancing
Road-noise, Drive Comfort,
Ride & Handling, Durability
Advanced Driver Assistance Systems (ADAS)
Guidance & Maneuvering,
Environment Modeling, Virtual Validation, Active
Safety22
23
LMS https://www.doczj.com/doc/295352191.html,b AMESim, the reference platform for
vehicle dynamics functional design at PSA Peugeot Citro?n
“A unique platform for a system approach in vehicle dynamics”
Benoit Parmentier, PSA Peugeot Citro?n
2006 AMESim European Users conference
Vehicle Dynamics
Ride & Handling, Scenario’s (roads, traffic, Body & Powertrain
Vehicle Dynamics
, AFS, EAS, MIL, SIL and HIL Chassis Loads & Durability
Road Noise, Ride Comfort
Steering Systems
Braking Systems
Suspension & Anti-roll, Axle,
Wheel Guidance, Tires,
Suspension Packaging,
“smart” systems
Multi-Attribute balancing
Road-noise, Drive Comfort,
Ride & Handling, Durability
Advanced Driver Assistance Systems (ADAS)
Guidance & Maneuvering,
Environment Modeling, Virtual Validation, Active
Safety25
PSA PEUGEOT CITRO?N selects LMS https://www.doczj.com/doc/295352191.html,b
as integrated simulation platform for vehicle engineering
+350 seats and +500 users
Christophe Chanteur, CAE Full-Vehicle Department, Peugeot-Citroen PSA:“The newly introduced modular approach for full-vehicle modeling matches our needs and is very useful to us. It enables us to create full-vehicle models starting from the models of their submechanisms, and also to define standard driving maneuvers much faster than before.”copyright LMS International -2012
28PSA PEUGEOT CITRO?N selects LMS https://www.doczj.com/doc/295352191.html,b
as integrated simulation platform for chassis engineering
LMS wins multi-year contract for the deployment of +350 seats LMS https://www.doczj.com/doc/295352191.html,b to more than 500 users
Covering all key vehicle performance attributes:
NVH and Acoustics Motion –50 seats: suspension & chassis mechanisms (closures)
vehicle body loads for durability Structures Pre-Post (incl. Crash) Structures Assembly (incl. Crash & Safety)Christophe Chanteur, CAE Full-Vehicle Department, Peugeot-Citroen PSA:“The newly introduced modular approach for full-vehicle modeling matches our needs and is very useful to us. It enables us to create full-vehicle models starting from the models of their submechanisms, and also to define standard driving maneuvers much faster than before.”Developing two approaches for Durability Loads Prediction with LMS https://www.doczj.com/doc/295352191.html,b Motion LMS Conference Europe –Munich –23rd March 2006Christophe CHANTEUR Vehicle Dynamics Modelling
Centre Technique de Vélizy, France
LMS Users Conference, Stuttgart, May 2007
29 Mercedes uses LMS https://www.doczj.com/doc/295352191.html,b Motion for chassis development
copyright LMS International -
2012
31copyright LMS International -2012
PICCHIO develops faster race cars with LMS https://www.doczj.com/doc/295352191.html,b Motion
Challenges:
To design suspensions for its motorsports vehicles in order to improve the competitiveness of its cars
>> e.g. for better on-track handling and maneuverability
To develop custom-built high-performance sports cars for road driving
Solution:
LMS https://www.doczj.com/doc/295352191.html,b Motion
Benefits:
To reach the best design without building and testing hardware prototypes
To go through numerous iterations and still meet critical windows of opportunity “LMS https://www.doczj.com/doc/295352191.html,b Motion has all the capabilities we need in an integrated package with an
intuitive, graphical interface that is easy to use.”
Picchio P4E2 MY 2011
“The adoption of the multibody simulation has been the key aspect to design, verify and optimize all possible variant set-ups before the test phase. Although it is always needed a series of tests for the final tuning, simulation has enormously decreased the development stage activity in terms of reduction of time and cost of the experimental phase, allowing identifying a selected number of optimized set-up solutions.”
Pierluigi Antonini, Senior Engineer, Test & Simulation Division ETA S.r.l.
Vehicle Dynamics
Ride & Handling, Scenario’s (roads, traffic, Body & Powertrain
Vehicle Dynamics
, AFS, EAS, MiL, SiL and HiL Chassis Loads & Durability
Road Noise, Ride Comfort
Steering Systems
Braking Systems
Suspension & Anti-roll, Axle,
Wheel Guidance, Tires,
Suspension Packaging,
“smart” systems
Multi-Attribute balancing
Road-noise, Drive Comfort,
Ride & Handling, Durability
Advanced Driver Assistance Systems (ADAS) –Research activity only
Guidance & Maneuvering, Environment Modeling,
Virtual Validation, Active Safety
35
Engineering ‘driving passion’
Body Stiffness/Flexibility affects handling feel
Multi-channel mobile system
LMS https://www.doczj.com/doc/295352191.html,b
Driveshaft
Torque Optical Wheel and Body
GPS
Inertial Measurement
System
Accelerations
Strains
Challenge:determine the contribution of body flexibility (modes, local/global deformation, …) on the ride & handling performance
Unique point:LMS has the advanced testing experience with combined acceleration/strain gauge measurements and systems, combined with the knowledge of dynamics simulation
Output:decomposition of ride & handling performance indices into body modal contribution
Analysis of the Contribution of Body Flexibility to Handling and Ride Comfort Performances
20090529 JSAE Society Automotive Engineers of Japan
Software ●Services●Engineering Innovation
37
Thank you !
Questions ?