A substantial 50%. That’s the impact of road & tires on vehicle dynamics!

Siemens Visionary Siemens Visionary
Siemens Visionary

We all know that tires are a crucial component of the chassis and substantially influence the vehicle dynamics. But how much is ‘substantially’? And what can we do to make sure the tire positively contributes to the overall driving safety and behavior?

 

If this triggered your attention, let’s make it yet more compelling … How about getting all the above, while speeding up your time-to-market, and balance the vehicle’s performance with NVH and aerodynamics? I hear you thinking: “Now, we’re talking!”

 

In the Handbuch Kraftfahrzeugtechnik, the influence of road, tires and the vehicle for a myriad of attributes such as acoustics, steering, friction is depicted.

 

Vieweg’s Handbuch Kraftfahrzeugtechnik.jpgInfluence of road, tires and vehicle on functional performances, as studied in Vieweg’s Handbuch Kraftfahrzeugtechnik

When looking at the graph, you see that for driving behavior and driving safety, the impact of road and tires mounts to approximately 50% of the total vehicle’s performance. Fifty percent! Five zero! I guess you agree that this is quite substantial.

 

A substantial 50%

 

Now we understand how substantial the impact of road and tires is on the overall vehicle dynamics performance, it doesn’t surprise you to know that vehicle OEMs, chassis and vehicle integration departments are more and more considering the tire as an integral vehicle component. In discussions we have with vehicle OEMs, we experience that manufacturers are more and more cascading stricter requirements to tire manufacturers.

 

Additionally, vehicle manufacturers see the essence to have a well-defined and accurate representation of tire behavior throughout the vehicle development process. Doing so, they can virtually validate performance and robustness of sub-systems, balance performances and speed up the time-to-market.

 

That’s all interesting. But back to the 50% that combines road and tire influences. Obviously, there’s not much we can do about the road surface. The tires and vehicle dynamics performance on the contrary… here, you enter our domain.

 

On-demand webinar

 

We recently hosted the webinar: Tire modeling for an outstanding grip on vehicle dynamics targeting vehicle OEMs, integration and chassis departments. A great deal of OEMs and suppliers attended and discovered how standardized tire modeling, ranging from tire testing over model parameterization to model application, helps to accurately simulate tire performance throughout the vehicle design process.

 

Illustrated by application examples, our expert Willem Versteden, described modeling techniques with increasing level of detail, from Pacejka’s Magic Formula to Finite Element modeling and Computational Fluid Dynamics. Additionally, Willem described the impact of tire performance on the vehicle’s safety systems performance, aerodynamics, NVH comfort, durability and hydroplaning.

 

key visual 2.jpgLink to Willem’s speech: Tire modeling on-demand webinar

Webinar in a nutshell

  • How tire models are generated for accurate validation and benchmarking studies
  • How to apply tire models for vehicle driving dynamics, aerodynamics and NVH simulations
  • How to balance between tire testing effort and calculation accuracy
  • How industry leading car manufacturers apply tire models in their product development process

Doing so, vehicle manufacturers will be able to fulfil (future) requirements linked to automated driving systems and ensure outstanding vehicle dynamics performance.

 

Questions & Answers

 

During the webinar, Willem answered a couple of questions live. The questions that were not answered during the live session, were collected and replied after the webinar. Because you know … no question goes to waste!

I kindly invite you to attend the on-demand webinar and get back to us with your question, or consult the 40+ Q&A included here.

 

Save the date

 

October 24, we will present the follow-up session of this topic. The title will be: Integral approach of tire testing and model parametrization for vehicle dynamics. Stay tuned!

 

Interesting links: