The Tire Society announces the first recipient of the Tire Society Distinguished Achievement Award, a recognition bestowed on individuals who have made outstanding contributions to the field of tire science and technology. This award is given biannually, and this year will be formally presented at the 28th Annual Conference on Tire Science & Technology hosted by The Tire Society at the Akron City Centre Hotel in Akron, Ohio, USA on September 15, 2009.

This year’s recipient is the late Samuel K. Clark. The lifetime achievement and record of contributions by Dr. Clark (1924–2006) to tire science

Abstract

Vehicle dynamic simulations require accurate, fast, reliable, and easy-to-parameterize tire models. For this purpose, TNO developed MF-Swift in close cooperation with the technical universities of Delft and Eindhoven. MF-Swift is based on the well-known magic formula model of Pacejka but extending to higher frequencies (60–100 Hz), shorter wavelengths (>0.2 m), and rolling over obstacles by adding a rigid ring and obstacle enveloping model. During the development of MF-Swift, great emphasis was given to experimental validation using dedicated laboratory experiments. With increasing use of MF-Swift in the automotive industry, easy and reliable parameterization has become more important. Therefore, recent efforts have focused on improving the parameter identification process so that it can be conducted with little user interaction and with measurements obtained from industry common test facilities. This paper will discuss the theory behind the improved MF-Swift parameter identification process.

Abstract

Optical methods using digital image correlation (DIC) are utilized in developing rubber constitutive tests. Two and three dimensional DIC systems are employed to measure strains on rubber specimens subjected to uniaxial, planar, and biaxial stress states. A special membrane inflation test was developed and is described for providing the biaxial constitutive data. Deformation-induced material property changes for the three modes of testing are quantified using a concept based on energy dissipation. The constitutive test strain ranges for each of the three modes are separately selected to equalize the material states. The methodology is applied to filled rubber compounds in order to characterize them in terms of hyperelastic behavior. Evaluation and comparison of several common hyperelastic models are given, and application to finite element modeling of a structural rubber specimen is described.

Abstract

Performance prediction of hydroplaning via coupling of computational fluid dynamics (CFD) and FE modeling has delivered a detailed insight into the local mechanisms and root causes of hydroplaning but is still very time consuming and extensive.

The goal of the present work is the development of simple rules of thumb and easy to understand models to give the tire designer a quick approach to optimize the hydroplaning performance of his design concepts including the target conflicting trade-offs.

Based on the DOE study covering basic winter and summer tread patterns and tread compounds taking into account interactions, total void, longitudinal, and lateral void distributions have been varied. Experimental designs have been tested concerning longitudinal hydroplaning behavior on front and rear driven cars and lateral hydroplaning. Most important target conflicting performance criteria such as wet and dry braking, noise, rolling resistance, winter traction, and force and moment characteristics among others have been tested additionally.

The existing models using hydrodynamic pressure influences have been reviewed and extended. A simple to use development tool has been programed to quantify pattern design to get a quick prediction of tire performance changes (“Void Slider”).

Comparison Between Tire Rolling Resistance Measurements on a Flat Track and a Test Drum Under Non-Steady-State Conditions

Lisa Ydrefors,

Mattias Hjort,

Sogol Kharrazi,

Jenny Jerrelind, and

Annika Stensson Trigell

Samuel K. Clark—First Recipient of the Tire Society Distinguished Achievement Award

Structure and Parameterization of MF-Swift, a Magic Formula-based Rigid Ring Tire Model ³

Abstract

Test Methods for Hyperelastic Characterization of Rubber ⁴

Abstract

Influence of Pattern Void on Hydroplaning and Related Target Conflicts ⁴

Abstract

Reduction of Tire Groove Noise Using Slot Resonators ⁵

Abstract

Comparison Between Tire Rolling Resistance Measurements on a Flat Track and a Test Drum Under Non-Steady-State Conditions

Critical Plane Analysis of Surface-Proximal Fields for the Simulation of Thermo-Mechanical Wear

Enhancing Tire Model Parameterization for Rollover Simulation: A Validated Approach

Research on Fast and Efficient Virtual Sample Delivery Method of Tire Mechanical Characteristics

Prediction of the Frictional Power Distribution in the Tire Contact Patch Based on an Empirical Tire Model and an Artificial Neural Network