TNO Automotive
TNO Automotive
TNO Automotive
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<strong>TNO</strong> <strong>Automotive</strong>Michael de RoonLMS Conference Europe 2006
Tyre modeling using <strong>TNO</strong> Delft-Tyre! Introduction! <strong>TNO</strong> Delft-Tyre! <strong>TNO</strong> Delft-Tyre simulation models MF-Tyre & MF-Swift! Future developments! Conclusion2LMS Conference Europe 2006
<strong>TNO</strong> in a nutshell! <strong>TNO</strong> is the Netherlands’ Organization for Applied Research! Founded in 1932! Independent R&D organisation! 5,500 employees world-wide! Our mission is ‘to apply scientific knowledge with the aim ofstrengthening the innovative power of industry andgovernment’.3LMS Conference Europe 2006
<strong>TNO</strong> ACTS overviewDELFT-TYREChassis ControlADASTesting & modelling oftyre behaviourDesign methods &concept control logicDesign tools &design methodsIn-depth understanding oftyre behaviour is crucial5LMS Conference Europe 2006
What is Delft-Tyre?To know the effect of tyres on vehicle driving performance! State-of-the-art testing equipment! In-depth expertise in Vehicle Dynamics & Control! Latest tyre simulation technology! Standardisation in tyre testing & simulation worldwide6LMS Conference Europe 2006
Tyres and Brand Values! Tyres play a dominant role in:handling, steering feel, comfort, active safety, …! Typical challenges:! Predict tyre behavior to support suspension design, chassis controland tuning! Communicate tyre performance requirements with tyre maker! Compare tyre performance to support tyre choice... in a cost-effective way! “Engineering the right brand experience”7LMS Conference Europe 2006
Delft-Tyre approachTyreTyreTestingTestingTyre measurement dataTranslate Translate any any real real tyre tyre into into a virtual virtual tyre tyreRepeatable, Repeatable, Reliable Reliable & Validated ValidatedMF-ToolMF-ToolTyre model parametersMF-TyreMF-TyreMF-SwiftMF-Swift8LMS Conference Europe 2006
Tyre measurementTyreTyreTestingTestingIndoor & Outdoor TyreTest Test Facilities9LMS Conference Europe 2006
On-Road Tyre Testing! Steady state force & moment on dry & wet roads! Car, light truck / SUV, motorcycle & racing tyres! Max. speed 150 kph! Max. camber 30˚(car)70˚(motorcycle)! Max. slip angle 18˚! Braking to full sliding! Max. normal load 10 kN10LMS Conference Europe 2006
On-Road Tyre TestingNew Truck Lab! Accurate characteristics on real roads! Flexible: Dedicated programs tocapture specific effects! Controlled using dSPACE environment! Modular to support different tyres andsystems11LMS Conference Europe 2006
MF-Tool! Identification of model parameters from tyre measurementdata (e.g. Magic Formula parameter fitting)! Database for storing measurements and model parametersets! Visualisation, comparison and manipulation of different tyrecharacteristics! Supports all Delft-Tyre models + dedicated models! export and import of tyre property filesUsed by major tyre and vehicle manufacturers13LMS Conference Europe 2006
MF-Tool14LMS Conference Europe 2006
Validated Tyre SimulationTyreTyreTestingTestingTyre measurement data(F&M, Tydex)Accurate Accurate & efficient efficient tyre tyre models models for forHandling, Handling, Ride/Comfort Ride/Comfort & Durability DurabilitySimulationsSimulationsMF-ToolMF-ToolTyre model parametersMF-TyreMF-TyreMF-SwiftMF-Swift15LMS Conference Europe 2006
<strong>TNO</strong> Delft-Tyre simulation models! MF-Tyre! Pacejka’s latest Magic Formula! World standard for vehicle handling! From concept to validation! MF-Swift! MF-Tyre + Tyre Belt Dynamics! 3D digitized road models! Ride, comfort, durability16LMS Conference Europe 2006
MF-Tyre applicationsvehicle handling…! steady state circular test! lane change! braking or power-off in a turn! split-µ braking! vehicle roll over! …limitations:! frequency < 8 Hz! no short wavelength undulations (> tyre circumference)…solved with SWIFT!17LMS Conference Europe 2006
MF-Swift 6.0! Advanced tyre model for dynamic simulations! MF-Tyre 6.0 (latest Magic Formula tyre model 2005)! Tyre rigid body modes (dynamics valid up to ~100Hz)! 2D/3D obstacle passing18LMS Conference Europe 2006
MF-Swift 6.0! Unique: validated handlingcombined with irregular road! Easy parameterizationof MF-Swift (MF-Tool, ‘express’)! Accurate and fastest dynamic model available: Real-timefor HIL testing (dSPACE, xPC) and DoE analyses19LMS Conference Europe 2006
MF-Tyre & MF-Swift in Virtual.Lab Motion! Rev 5: New tyre element in force element library.! Dedicated tyre creation dialog box and post-processing! 2D / 2.5D: parameterized road descriptions! LMS 3D digital road: RSM2000 Road Surface Model20LMS Conference Europe 2006
Full application coverage21LMS Conference Europe 2006
Outlook….Inflation pressure influence! More flexibility for the CAE engineer! Less tyre measurements required22LMS Conference Europe 2006
Outlook….Temperature effects! Temperature prediction as function of tyre slip! Important for friction and stiffness levels23LMS Conference Europe 2006
Conclusion: Delft-Tyre solutionsOur dedicated software is ready to solve your tyre related issues:Predict tyre behavior to support suspension design, chassis control and tuning→ MF-Tyre and MF-SwiftCommunicate tyre performance requirements with tyre maker→ MF-Tyre and MF-Swift model parameter setsCompare tyre performance to support tyre choice→ On-road tyre test truck→ MF-Tool24LMS Conference Europe 2006
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