Simulation Project C.A.R.S.

[liakjim]

Κοντός ψαλμός...

[kyr..]

[wolves]

Inside Project CARS Seta Tire Model

Racing, whether it happens in the real or the virtual world, is all about tires. That’s why Project CARS is powered by the revolutionary Seta Tire Model (STM) that plays a key role in making the WMD-powered title the most authentic virtual racing experience.

But what exactly does the Seta Tire Model do? Slightly Mad Studios’ physics expert Andrew Weber takes us for a look deep under the hood of the tire technology that drives Project CARS!

Seta Tire Model Described

Seta Tire Model (STM) is a full dynamic tire simulation. Actually, it is three coupled simulations, one for the tire carcass, one for the tire tread and contact patch, and one for heat transfer simulation. It is also modular, where different carcass and tread simulation techniques can be used interchangeably. For example, off road racing may use a different tread simulation.

Carcass Simulation

The carcass simulation used in Project Cars is a finite element simulation with specific computational optimizations specific to real time tire simulation. The carcass is discretized into small connected “elements”, each one flexing and deforming due to forces.

Features:

Elastic behavior changes with speed, temperature, and pressure

Rolling resistance changes with speed, temperature and pressure

Sidewall buckling at low pressure

Bias Ply, Radial, or Hybrid construction

Gyroscopic Effects

Dynamic response such as vibration, telescoping, and twisting

Tread Simulation

The tread simulation used in Project Cars is a finite difference simulation of the contact patch, with the tire tread “flowing” through the contact patch. The whole tread itself is discretized into elements much like the carcass, but the contact patch itself is a finite difference grid.

Features:

Flash Heating, which is the change of temperature in the outermost rubber layer through the contact patch.

Componentized grip model. Each component is affected differently by road surface conditions, wetness, and temperature.

Deformation – the rubber deforming in and around asperities, resisting sliding motion.

Adhesion – the rubber bonding to surface rubber and material.

Tack – the sticky tacky grip you can feel on your shoes when walking a rubbered in track, related to adhesion.

Tearing – the ripping of rubber from the tire

Cut – grip from the geometry, edges, grooves, and siping of the tread, with particular effect in dirt and gravel

Tread channel depth and water handling.

Discretized and temperature sensitive wear

Curing

Temperature sensitive elastic properties

The carcass and tread simulations are coupled such that there is no roughness or “stepping”, while still preserving the detail of both simulations. The contact patch size, shape, and pressure distribution is determined by the carcass simulation and is used by the tread simulation. The forces on the tire from the road surface are simulated in the tread simulation and transferred as external forces to the carcass simulation.

Heat Transfer Simulation

The heat transfer simulation handles heat flow between brakes, wheel well, rim, carcass, and tread layers. The heat transfer amongst tread elements, from tread elements to the road surface, and from the tread elements to the air are handled directly by the tread simulation (including advection and evaporation). The pressure of the tire is maintained by the carcass simulation via the ideal gas law.

Emergent Effects

Most effects just “fall out” of STM without explicit coding for effect:

Fy, Fx, and Mz vs slip angle curves, complete with realistic nuances, such as Mz inversion

Inclination effects such as camber thrust

Complex and sometimes subtle changes in behavior due to load, heat, pressure, and speed.

Proper behavior at a standstill and very slow speeds, although due to limitations of consumer force feedback devices, oscillations may still occur.

Many tire models break down at a standstill.

Flatspots

Hydroplaning

Changes in behavior due to surface differences, such as surface roughness, track rubbering in, wetness, and dirt.

[peopas]

Project CARS Delayed To March 2015 | DSOGaming | The Dark Side Of Gaming

According to Slightly Mad Studios, the primarily reason behind this delay is the release of other triple-A games alongside Project CARS’ initial November release. Assassin’s Creed: Unity, Far Cry 4, Call of Duty: Advanced Warfare are about to hit streets and it’s obvious that Slightly Mad Studios does not want to compete with them.

In addition, the team noted that the game needs further polishing, something that obviously strengthened the decision to delay it to 2015.

4 μήνες delay;; Ποιος περιμένει μέχρι τότε... Τουλάχιστον θα είναι πιο polished (ας ελπίζουμε).

Έγινε επεξεργασία Οκτώβριος 17, 2014 από peopas

[kyr..]

γιατι δεν ηξεραν απο πριν οτι θα κυκλοφορησουν αυτοι οι τιτλοι σε αυτες τις ημερομηνιες?

μαλλον λογο της kunos μαζευεται η Slightly Mad Studios

μεγαλο αρνητικο παντως που θα παιζει η kunos μονη της μπαλα......

Έγινε επεξεργασία Οκτώβριος 17, 2014 από kyr..

[sebastian]

Καληνυχτα!!! Θα παω να παρω ΧΒΟΧ ΟΝΕ να παιξω FORZA!!! Βαρεθηκαμε στο περιμενε!

[akis_z80]

γιατι δεν ηξεραν απο πριν οτι θα κυκλοφορησουν αυτοι οι τιτλοι σε αυτες τις ημερομηνιες?

μαλλον λογο της kunos μαζευεται η Slightly Mad Studios

μεγαλο αρνητικο παντως που θα παιζει η kunos μονη της μπαλα......

Μάλλον και αυτοί δεν ξεκολλάνε από το ac γι'αυτό πήγε το χρονοδιάγραμμα πίσω.

Να προσέξουν όμως μη συμπέσει η νέα ημερομηνία του release με το dreampack dlc της Kunos και το αναβάλουν για Χριστούγεννα 2015.

[sebastian]

Μαλλον καποιος νευριασε ασχημα και το εβγαλε στη φορα στα γνωστα...14gbακια!

[ARMAGEDDON]

Μαλλον καποιος νευριασε ασχημα και το εβγαλε στη φορα στα γνωστα...14gbακια!

και πολύ καλά έκανε !!!

f@k them all !

[ARMAGEDDON]

δοκίμασα την έκδοση που υπάρχει στα γνωστά μέροι !

αρχικά να πω ότι είναι build και όχι το ολοκληρωμένο game !

δεύτερων στο build αυτό φαίνεται πόσο console port είναι ! τα βάζεις όλα full και παίρνεις από 20-30 fps δηλαδή έλεος ... 1,7GB VRAM είδα

οπότε υποψιάζομαι ότι επειδή το ξέρουν για αυτό αναβάλανε την pc version (το παιχνίδι φρουφρού και αρώματα είναι) πάρτε asseto corsa να τελειώνουμε

[sebastian]

δοκίμασα την έκδοση που υπάρχει στα γνωστά μέροι !

αρχικά να πω ότι είναι build και όχι το ολοκληρωμένο game !

ειναι η προ τελευταια build.

[kyr..]

[MENTION=478]sebastian[/MENTION] το εχεις παιξει? τι λεει? γραφικα/gameplay

[sebastian]

[MENTION=478]sebastian[/MENTION] το εχεις παιξει? τι λεει?

oχι ακομα! Θα ποσταρω συντομα!

[ARMAGEDDON]

Φωτογραφιες μπορουμε να βαλουμε !

[sebastian]

απο postimage.org

[ARMAGEDDON]

Βρε αν μπορουμε , μην μας ξεκινησουν τα μπανς

[sebastian]

Βρε αν μπορουμε , μην μας ξεκινησουν τα μπανς

προχωρα και εγω ειμαι εδω!

[ARMAGEDDON]

ένα help με τα Settings plz για να σιγουρευτώ ότι είναι τέρμα

Έγινε επεξεργασία Οκτώβριος 18, 2014 από ARMAGEDDON

[sebastian]

Το SLI δεν δουλευει.

- Σε clear weather το παιχνιδι παει 60 fps και πανω. (αναλογα και το ποσα αμαξια θα βαλεις να τρεχουν στην πιστα, αλλο 8, 16 και 32 αμαξια.)

- Σε storm weather τα κωλαρακια σφίγγουν αισθητά!

ΣΑΓΟΝΙΑ ΣΤΟ ΠΑΤΩΜΑ

Πολυ καλος στο PRO MODE ο Χειρισμός! Πολυ δυσκολος!

διπλο κλικ πανω στις φτογραφιες!

....θελει πεταλιερα το παιχνιδι.

Έγινε επεξεργασία Οκτώβριος 19, 2014 από sebastian

[djkostas]

lol

Extreme Caution ... Slippery when wet!!

Thanks για τις φώτο, νομίζω κανένας δεν μπορεί να διαφωνήσει ότι είναι πανέμορφο!