Technical contents

Sport driving skills: A preliminary comparative study from outdoor testing sessions

What role do drivers play in shaping vehicle behavior, along with technological advances in vehicle controls? This paper aims to present the results of an innovative study, based on an outdoor test campaign with a fully instrumented vehicle, driven on track by several drivers with different levels of experience. Starting from the collected data, a series of objective metrics have been defined in order to quantify aspects related to the direct driver interaction with the car and to the trajectory repeatability.

Tire Performance Evaluation: Comparing Indoor Test Bench and Outdoor Model-Based Vehicle Testing Methodologies

Starting from the earliest design phases in automotive field, testing sessions carried out in reliable simulation environments support the product optimization considering multiple constraints and allowing to significantly reduce the number of prototypes, linked costs and required time. In such a scenario, tire-road interaction models cover a fundamental role in the vehicle’s system modeling, since the tires are accountable for the generation of forces arising within the tire-road contact patches for both vehicles handling and comfort purposes.

Tyre wear model: A fusion of rubber viscoelasticity, road roughness, and thermodynamic state

Wear is due to many causes and involves three major consequences: loss of performance, loss of security and environmental pollution. This study aims to propose an innovative holistic approach to understanding tire wear, focusing on the development of a comprehensive model that account for viscoelastic characteristics of the tread compound, pavement roughness, and various tire operating conditions, dynamically adapting to changes in real-time for more accurate predictions.

Four-Wheeled Vehicle Sideslip Angle Estimation: A Machine Learning-Based Technique for Real-Time Virtual Sensor Development

In the last few decades, the role of vehicle dynamics control systems has become crucial. In this complex scenario, the correct real-time estimation of the vehicle’s sideslip angle is decisive. Indeed, this quantity is deeply linked to several aspects, such as traction and stability optimization, and its correct understanding leads to the possibility of reaching greater road safety, increased efficiency, and a better driving experience for both autonomous and human-controlled vehicles.

Analysis of the Scenarios of Use of an Innovative Technology for the Fast and Nondestructive Characterization of Viscoelastic Materials in the Tires Field

The properties of tires related to their viscoelastic behavior have a significant impact in the field of vehicle dynamics. They affect the performance and safety of a vehicle based on how they change when the tire performs in variable thermal conditions, interacts with various kinds of road surfaces, and accumulates mileage over time.

VESevo, an innovative device for non-destructive and smart viscoelastic characterization of tires compounds

The patented technology of the VESevo allows the characterization of the Storage Modulus and the Loss Factor thanks to the build-in high-accuracy sensors, which enable the user to carry out many measurements at different conditions and directly in-situ.

A Co-Simulation Platform with Tire and Brake Thermal Model for the Analysis and Reproduction of Blanking

In the world of motorsports engineering, improving brake performance is a crucial goal. One significant factor that affects this performance is the increase in brake disc temperature due to reduced cooling airflow, a phenomenon called “blanking”

Experimental Friction Analysis Through Innovative Compound-Substrate Contact Modelling for Automotive Applications

Introducing GrETA, a friction model poised to predict tire-road friction coefficients across different conditions temperature, pressure, and relative velocity. GrETA integrates micro and macro scale road profile roughness parameters, alongside viscoelastic properties of the tire tread compound using VESevo technology. This innovative model mathematically captures the intricate contact phenomena between the rubber surface and substrate countersurface.

RIDElab: Advanced calibration tool for a real-time MF-based multiphysical tire model

The necessity to parametrize the advanced MF model has led to the development of an interactive tool, able to identify the miscellaneous model parameters directly on the experimental data acquirable in both outdoor or indoor testing sessions. The improved accuracy of the model response and the potential of the RIDElab approach have been validated in multiple motorsport categories where thermodynamic and wear effects on the tire behavior can not be ignored.

Development of a simplified methodology for grip prediction in motorsport

Nowadays, knowledge of vehicle dynamic behaviour is becoming more and more ingrained, es- pecially in applications such as motorsport where numerous linearization can be introduced into the models making studies relatively simpler compared to more complex cases.

Tire Wear Sensitivity Analysis and Modeling Based on a Statistical Multidisciplinary Approach for High-Performance Vehicles

One of the main challenges in maximizing vehicle performance is to predict and optimize tire behavior in different working conditions, such as temperature, friction, and wear. In the field of wear understanding, different approaches are under study both in academia and industry. The paper aims to combine physical and data-driven analyses based on the statistical approach considering a large number of high-performance vehicle telemetries, tracks, and road data, as well as tires’ viscoelastic properties.

Ultraviolet Light Radiation Effects on Viscoelastic Property Variation in Polymers

Viscoelastic materials exhibit a variable mechanical behavior generally investigated through Dynamic Mechanical Analysis (DMA). Such kind of test is carried out on standardized specimens, which have to be specifically produced or extracted from the component to be characterized, causing its destruction

Non-Linear Model of Predictive Control-Based Slip Control ABS Including Tyre Tread Thermal Dynamics

Vehicle dynamics can be deeply affected by various tyre operating conditions, includ- ing thermodynamic and wear effects. Indeed, tyre temperature plays a fundamental role in high performance applications due to the dependencies of the cornering stiffness and potential grip in such conditions.

Physical tire modeling for real-time simulation

Online the official preview of the educational content’s technical abstract by MegaRide group: “Physical Tire Modeling for Real-Time Simulation”. An overview on our completely modular simulation platform, with specific focus to procedures and methodologies established over the years to carry out the tire digitalization process.

Preview – weaRIDE technical brochure

weaRIDE is a tire wear physical model of the MegaRide RIDEsuite product family.
Abrasion phenomenon is modelled to simulate the tire tread thickness evolution during the lifecycle, as a function of the cumulated damage within the viscoelastic material.

Estimation of Vehicle Longitudinal Velocity with Artificial Neural Network

Vehicle dynamics control systems have a fundamental role in smart and autonomous mobility, where one of the most crucial aspects is the vehicle body velocity estimation. In this paper, the problem of a correct evaluation of the vehicle longitudinal velocity for dynamic control applications is approached using a neural networks technique employing a set of measured samples referring to signals usually available on-board, such as longitudinal and lateral acceleration, steering angle, yaw rate and linear wheel speed.

Investigation of the Mileage Effects on the Viscoelastic Properties by a Non-destructive Method

The viscoelastic properties of tires play a fundamental role into vehi- cle dynamics field affecting the vehicle performance and safety according to their evolution over the mileage. The knowledge of these properties is obtained through destructive tests, such as the Dynamic Material Analysis, which make the tire unus- able. In this scenario, the Applied Mechanics research group of the Department of Industrial Engineering at the Federico II has developed an innovative device, called VESevo,

Fractional Calculus Approach to Reproduce Material Viscoelastic Behavior, including the Time–Temperature Superposition Phenomenon

The design of modern products and processes cannot prescind from the usage of viscoelastic materials that provide extreme design freedoms at relatively low cost. Correct and reliable modeling of these materials allows effective use that involves the design, maintenance, and monitoring phase and the possibility of reuse and recycling.

TRT EVO: Advances in real-time thermodynamic tire modeling for vehicle dynamics simulations

Vehicle performances, especially in motorsport, are deeply affected by tire behavior and in particular by tire compound proper working conditions. In this research activity, a series of innovations have been introduced on the Thermo Racing Tire

Study on the Generalized Formulations with the Aim to Reproduce the Viscoelastic Dynamic Behavior of Polymers

Appropriate modelling of the real behavior of viscoelastic materials is of fundamental importance for correct studies and analyses of structures and components where such materials are employed

Investigation on the Model-Based Control Performance in Vehicle Safety Critical Scenarios with Varying Tyre Limits

Abstract: In recent years the increasing needs of reducing the costs of car development expressed by the automotive market have determined a rapid development of virtual driver prototyping tools that aims at reproducing vehicle behaviors.

Static and Dynamic Analysis of Non-Pneumatic Tires Based on Experimental and Numerical Methods

Since the beginning of their production, pneumatic tires have experienced tremendous improvements in structure and materials, becoming the dominant design in the world tires market. Nevertheless, relying upon pressurized air, they are affected by maintenance and security issues that can lead to fatal accidents.

Evaluating viscoelasticity

Detailing a new, non-invasive and portable instrument to characterize the viscoelastic properties of tires

Review on Friction and Wear Test Rigs: An Overview on the State of the Art in Tyre Tread Friction Evaluation

The future evolution of autonomous mobility and road transportation will require substantial improvements in tyre adherence optimization.

A Neural-Network-Based Methodology for the Evaluation of the Center of Gravity of a Motorcycle Rider

A correct reproduction of a motorcycle rider’s movements during driving is a crucial and the most influential aspect of the entire motorcycle–rider system.

A numerical methodology for thermo-fluid dynamic modelling of tyre inner chamber: towards real time applications

The characterization and reproduction of tyre behaviour for vehicle modelling is a topic of particular interest both for real-time driver in the loop simulations and for offline performance optimization algorithms


Abstract. In the last years, the tire technological development has played a fundamental role in motorsport and in automotive industry. The tire contact patch forces have a great influence on the vehicle behavior, so their correct estimation is a crucial task to understand how to improve the car performance.

Multiphysics model for tire performance optimization

One of the biggest challenges facing development engineers and testing technicians in the automotive field is the need to obtain reliable tire data, in order to understand their physical behavior.

VESevo: An Innovative Device For Non-Destructive Viscoelasticity Characterization

The evaluation of the viscoelastic properties is a key topic for the analysis of the dynamic mechanical behaviour of polymers.

A Real‐Time Thermal Model for the Analysis of Tire/Road Interaction in Motorcycle Applications

The small extension of the footprint in motorcycle tires, along with the need to guarantee driver stability and safety in the widest possible range of riding conditions, requires that tires work as most as possible at a temperature capable of providing the highest interaction force with road.

Multiphysical analysis

A multiphysical approach to tire dynamics is vital to understanding the array of interconnected physical phenomena and their effects on tire structural characteristics.

Evaluating CV tire wear

The automotive tire sector is changing, from a closed environment to an extremely open one where the
importance of sharing expertise is a key aspect to consolidating (and in some cases, improving) position in the market.

Tools of the trade

A modular software package offers a suite of real time, robust physical tire models and procedures, helping vehicle and tire manufacturers to achieve more reliable performance analysis.

Tire/road interaction models

Analysis of the results provided by a grip and thermodynamics-sensitive tire/roadinteraction force characterization procedure.