TameTire 3.0 Page 1 Apply & Innovate 2014 Auteur/Sce : - PowerPoint PPT Presentation

TameTire 3.0 Page 1 Apply & Innovate 2014 Auteur/Sce : F.SPETLER & O.BLANCO HAGUE Classification: D4 Conservation :YC+3 Date de création : 03/07/2014

Index The model : an overview Model validation TameTire 3.0 : novelties Michelin’s vision for TameTire Apply & Innovate 2014 Auteur/Sce : F.SPETLER & O.BLANCO HAGUE Classification: D4 Conservation :YC+3 Date de création : 03/07/2014 Page 2

TameTire : an overview Apply & Innovate 2014 Auteur/Sce : F.SPETLER & O.BLANCO HAGUE Classification: D4 Conservation :YC+3 Date de création : 03/07/2014

TameTire : an overview For handling purposes Easy to obtain MF Perfomances (CPU) TMTE Real time threshold FEM Difficult to obtain Realism Page 4 Apply & Innovate 2014 Auteur/Sce : F.SPETLER & O.BLANCO HAGUE Classification: D4 Conservation :YC+3 Date de création : 03/07/2014

TameTire: the model X Mechanical model Rubber properties Thermal models X Y Z casing torsion tread pattern rim Internal δ Rubber temperature shear modulus G* δ ’ of the tread thermal equation in the tread depth speed Tread rigidity Convection to air Belt bending F X Internal F Y contact Adherent part heating due to M Z patch O tread shearing Sliding part Conduction Heat generation to the track due to friction contact model Contact temperature Friction coefficient Apply & Innovate 2014 Auteur/Sce : F.SPETLER & O.BLANCO HAGUE Classification: D4 Conservation :YC+3 Date de création : 03/07/2014

Model validation Apply & Innovate 2014 Auteur/Sce : F.SPETLER & O.BLANCO HAGUE Classification: D4 Conservation :YC+3 Date de création : 03/07/2014

Model validation Application of the following procedure to validate our model: • 1. Verify that the TameTire testing procedure can be applied successfully on a third party machine • 2. On vehicle testing: � Steady state � Braking Visit to NTRC (USA) to perform the TameTire testing procedure on several passenger car tyres (Michelin & competitor tyres) Apply & Innovate 2014 Auteur/Sce : F.SPETLER & O.BLANCO HAGUE Classification: D4 Conservation :YC+3 Date de création : 03/07/2014 Page 7

Test procedure on a third party machine Results at the NTRC: Cornering Stiffness at cold Fy @ 80kph & Z=6700N at Transient @ 10kph at hot temperatures intemediate temperatures temperatures load6677 speed80 km/h 6000 4000 @ Michelin 2000 0 Fy (N) -2000 -4000 -6000 Fy Measurement Fy Model -8000 -15 -10 -5 0 5 10 15 Slip angle (°) load6724 speed80 km/h 8000 6000 4000 @ NTRC 2000 Fy (N) 0 -2000 -4000 -6000 Fy Measurement Fy Model -8000 -20 -15 -10 -5 0 5 10 15 20 Slip angle (°) TameTire vs Michelin’s measurement == TameTire vs NTRC measurement /!\ Page 8 Apply & Innovate 2014 Auteur/Sce : F.SPETLER & O.BLANCO HAGUE Classification: D4 Conservation :YC+3 Date de création : 03/07/2014

Model validation Pure tyre validation � � successfully achieved � � On vehicle validation vs simulation • Braking: � No precise braking model at our disposal � braking with a trailer • Steady state: � On vehicle testing vs total vehicle simulation on CarMaker Apply & Innovate 2014 Auteur/Sce : F.SPETLER & O.BLANCO HAGUE Classification: D4 Conservation :YC+3 Date de création : 03/07/2014 Page 9

Braking tests with a trailer Braking tests performed on Michelin’s test trailer on a 245 / 35 R 20 Pilot Alpin 4 Trailer with hydraulic brake discs Tyre being tested The braking force Fx is controlled until the desired maximum slip ratio (~50%) is reached To increase the clarity of the following graphs a Pacejka fit is performed on the experimental data Test plan Effect Range {1.5 ; 2.5 ; 3.5} bar Inflation pressure {1.6 ; 8} mm Tread thickness 30 -> 125 ° C Tyre temperature Apply & Innovate 2014 Auteur/Sce : F.SPETLER & O.BLANCO HAGUE Classification: D4 Conservation :YC+3 Date de création : 03/07/2014 Page 10

Braking with TameTire Temperature effect on braking Winter tyre: temperature effect 1.5 Ti = 35 ° C 1 115°C simu TMTE Friction coefficient mu 115°C simu TMTE 35°C simu TMTE 35°C simu TMTE Ti = 115 ° C 115°C mesure 35°C mesure 115°C mesure 35°C mesure 0.5 0 0 5 10 15 20 25 30 Slip Ratio (%) Apply & Innovate 2014 Auteur/Sce : F.SPETLER & O.BLANCO HAGUE Classification: D4 Conservation :YC+3 Date de création : 03/07/2014 Page 11

Braking with TameTire Sculpture height on braking 8mm TMTE Winter tyre: tread depth effect 1,6mm TMTE 1.5 8mm TMTE 1,6mm TMTE 8mm mesure 8mm mesure Hs = 1,6 mm 1,6mm mesure 1,6mm mesure 1 Friction coefficient mu Hs = new tyre 0.5 0 0 5 10 15 20 25 30 Slip Ratio (%) Apply & Innovate 2014 Auteur/Sce : F.SPETLER & O.BLANCO HAGUE Classification: D4 Conservation :YC+3 Date de création : 03/07/2014 Page 12

Braking with TameTire Pressure effect on braking Winter tyre: inflation pressure effect 1.5 P = 1,5b P = 3,5b 1 Friction coefficient mu 1.5bar simu TMTE 1.5bar simu TMTE 2.5 bar simu TMTE 2.5 bar simu TMTE 3.5 bar simu TMTE 1.5bar mesure 2.5bar mesure P = 2,5b 3.5 bar simu TMTE 3.5bar mesure 1.5bar mesure 0.5 2.5bar mesure 3.5bar mesure 0 0 5 10 15 20 25 30 Slip Ratio (%) Apply & Innovate 2014 Auteur/Sce : F.SPETLER & O.BLANCO HAGUE Classification: D4 Conservation :YC+3 Date de création : 03/07/2014 Page 13

On vehicle results versus TameTire predictions A on-track testing test to validate TameTire against on vehicle measurement Equipement: Vehicle : 308 110HP • 4 Kistler wheel force transducers • RT systems • 2 Lasers • GPS • Primacy 17” • Continental Sport Contact 17” • Manouevres: Steady state manoeuvres • � Several laps at different speeds (65 � 85kph) Simulation : CarMaker 4.5 + MF5.2 (Primacy 17’’ & Sport Contact 17 ’’) vs • CarMaker 4.5 + TameTire (Primacy 17’’ & Sport Contact 17 ’’) • Apply & Innovate 2014 Auteur/Sce : F.SPETLER & O.BLANCO HAGUE Classification: D4 Conservation :YC+3 Date de création : 03/07/2014

On vehicle results versus TameTire simulations on CarMaker Speed : 80 kph (Steady State) Yaw speed [ ° ° ° ° ] Slip angle @ CDG [ ° ° ° ° ] Rack displacement [mm] 25 0.03 0 ContiSportContact Slip angle @ COM (offset SA(0g)=0) [°] 0.025 20 -0.5 Rack displacement [m] 0.02 Yaw speed [°/s] -1 15 0.015 -1.5 10 0.01 -2 0.005 5 -2.5 0 0 0 0.2 0.4 0.6 0.8 1 -3 -0.005 0 0.2 0.4 0.6 0.8 1 Lateral acceleration [g] 0 0.2 0.4 0.6 0.8 1 Lateral acceleration [g] Lateral acceleration [g] 25 0 0.03 Slip angle @ COM (offset SA(0g)=0) [°] -0.5 0.025 20 Rack displacement [m] 0.02 -1 Primacy 3 Yaw speed [°/s] 15 0.015 -1.5 10 0.01 -2 0.005 5 -2.5 0 0 -3 0 0.2 0.4 0.6 0.8 1 0 0.2 0.4 0.6 0.8 1 -0.005 0 0.2 0.4 0.6 0.8 1 Lateral acceleration [g] Lateral acceleration [g] Lateral acceleration [g] Apply & Innovate 2014 Auteur/Sce : F.SPETLER & O.BLANCO HAGUE Classification: D4 Conservation :YC+3 Date de création : 03/07/2014

On vehicle results versus TameTire simulations on CarMaker Speed : 80 kph (Steady State) Slip angle @ Front Right [ ° ° ° ° ] Slip angle @ Rear axle [ ° ° ° ° ] 0 0 Slip angle @ Front right (offset SA(0g)=0) [°] Slip angle at rear axle (offset SA(0g)=0) [°] -0.5 ContiSportContact -2 -1 -4 -1.5 -2 -6 -2.5 -8 -3 -3.5 -10 -4 -12 -4.5 -5 -14 TameTire is overall better correlated 0 0.2 0.4 0.6 0.8 1 0 0.2 0.4 0.6 0.8 1 Lateral acceleration [g] Lateral acceleration [g] to measurement than MF5.2 0 0 Slip angle @ Front right (offset SA(0g)=0) [°] Slip angle at rear axle (offset SA(0g)=0) [°] -0.5 -2 -1 -4 -1.5 Primacy 3 -2 -6 -2.5 -8 -3 -3.5 -10 -4 -12 -4.5 -14 -5 0 0.2 0.4 0.6 0.8 1 0 0.2 0.4 0.6 0.8 1 Lateral acceleration [g] Lateral acceleration [g] Apply & Innovate 2014 Auteur/Sce : F.SPETLER & O.BLANCO HAGUE Classification: D4 Conservation :YC+3 Date de création : 03/07/2014

TameTire 3.0 : novelties Apply & Innovate 2014 Auteur/Sce : F.SPETLER & O.BLANCO HAGUE Classification: D4 Conservation :YC+3 Date de création : 03/07/2014

TameTire 3.0 : a faster version TameTire 3.0 has been successfully integrated into CarMaker 4.5 TameTire 3.0 is ~ 30% faster than TameTire 2.2 Apply & Innovate 2014 Auteur/Sce : F.SPETLER & O.BLANCO HAGUE Classification: D4 Conservation :YC+3 Date de création : 03/07/2014 Page 18

TameTire 3.0 : an improved RR model Integration of a new rolling resistance model based on the ISO 28580 indoor test Apply & Innovate 2014 Auteur/Sce : F.SPETLER & O.BLANCO HAGUE Classification: D4 Conservation :YC+3 Date de création : 03/07/2014 Page 19