Development of an Innovative Instrument for Non-destructive Viscoelasticity Characterization: VESevo

Farroni, Flavio; Genovese, Andrea; Maiorano, Annamaria; Sakhnevych, Aleksandr; Timpone, Francesco

doi:10.1007/978-3-030-55807-9_89

Cited by 15 publications

(6 citation statements)

References 14 publications

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“…The second mechanism takes place in a microscale and is amplified by slippage. Therefore, in both tyre-road phenomena, the viscoelastic properties of the tread rubber and its hysteresis, which are characterized by destructive and non-destructive techniques (Carputo et al, 2020;Farroni et al, 2021;Genovese & Pastore, 2021), as well as ultrasound (Lionetto & Maffezzoli, 2009) and optical (Martorelli et al, 2020) methods, play an important role. In the road roughness effects analysis, two main features of the road geometry must be examined considering the tyre grip: the macro and micro roughness.…”

Section: Mechanics Of Tyresmentioning

confidence: 99%

Tyre Mechanics and Thermal Effects on Tyre Behaviour

Genovese

Timpone

2021

Vehicle Dynamics

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This chapter deals with tyre mechanics and it has a particular focus on thermal effects on its dynamical behaviour. In the first part the typical tyre structure is introduced together with the tyre mechanical/dynamical behaviour according to a classical approach, so recalling the main kinematic and dynamic quantities involved in tyre pure and combined interactions. The core of this chapter is the description of a physical-analytical tyre thermal model able to determine the thermal status in each part of the tyre useful for vehicle dynamics modelling and driving simulations in order to take into account thermal effects on tyre interactions and consequently on vehicle dynamical behaviour. Successively also the tyre wear modelling is faced, after a brief introduction to the different models available in literature some considerations are reported concerning the thermal effects on wear.

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Section: Mechanics Of Tyresmentioning

confidence: 99%

Tyre Mechanics and Thermal Effects on Tyre Behaviour

Genovese

Timpone

2021

Vehicle Dynamics

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“…The crucial aspects in this context concern the choice of the proper mathematical formulation for the material modeling and the ability to calibrate the model with a limited amount of data explored in a particularly narrow frequency or temperature range, whose accuracy can be affected by the experimental technique employed. Indeed, the aim of both destructive and non-destructive testing techniques is to exploit the widest possible frequency–temperature working domain of the material to understand the material behavior within the exploited operating conditions and provide a sufficient amount of data for model-calibration purposes [ 7 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

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

2022

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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. Fractional models are becoming more and more popular in the reproduction of viscoelastic phenomena because of their capability to describe the behavior of such materials using a limited number of parameters with an acceptable accuracy over a vast range of excitation frequencies. A particularly reliable model parametrization procedure, using the poles–zeros formulation, allows researchers to considerably reduce the computational cost of the calibration process and avoid convergence issues typically occurring for rheological models. The aim of the presented work is to demonstrate that the poles–zeros identification methodology can be employed not only to identify the viscoelastic master curves but also the material parameters characterizing the time–temperature superposition phenomenon. The proposed technique, starting from the data concerning the isothermal experimental curves, makes use of the fractional derivative generalized model to reconstruct the master curves in the frequency domain and correctly identify the coefficients of the WLF function. To validate the methodology, three different viscoelastic materials have been employed, highlighting the potential of the material parameters’ global identification. Furthermore, the paper points out a further possibility to employ only a limited number of the experimental curves to feed the identification methodology and predict the complete viscoelastic material behavior.

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“…At present, the research on wet grip performance of tires mainly relies on the two methods of real-vehicle test [1][2][3][4][5][6] and finite element simulation. [7][8][9] In order to coordinate the tire label with the road surface classification, D'Apuzzo et al, 1 used experimental methods to find the correlation between the maximum friction coefficient of SRTT tires and the road pavement IFI.…”

Section: Introductionmentioning

confidence: 99%

“…Genovese et al 3 updated the overview of the friction testers, and reviewed the development and use of this equipment, gave a global overview of the measurement methodologies, and classified it according to the working and specimen motion principle. Farroni et al 4 proposed an innovative instrument, called VESevo, for viscoelasticity evaluation by means of non-destructive and user-friendly technique. Miao et al 5 characterized the fractal and multifractal properties of asphalt pavement macro-texture using three-dimensional (3D) measurements.…”

Section: Introductionmentioning

confidence: 99%

A method for tire wet grip performance evaluation based on grounding characteristics

Liang

Shan

Wang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part D:

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The wet grip performance of tire is one of the important performances affecting vehicle safety. The steering, acceleration, and braking of the vehicle are directly affected by the grounding characteristics between the radial tire and the ground. In order to study the influence of grounding characteristics of the tire on wet grip performance, ten 205/55R16 tires produced by different manufacturers were selected and tested. The grounding characteristics of the tires were tested using an optical test rig for tire grounding pressure distribution, considering inflation pressure distribution, load and wheel alignment. The tire-road contact area was subdivided into five parts, and 69 parameters were used to describe the grounding characteristics. A software was proposed to process the test results automatically, and 69 grounding characteristic parameters of each tire were obtained. Correlation analysis on tire wet grip performance and grounding characteristics was used for selecting the principal parameters. Finally, eight grounding characteristic parameters related to tire wet grip performance was obtained. Among them are five grounding characteristic parameters (central area rectangle ratio, central area width, internal shoulder length-to-width ratio, external and internal shoulder contact area ratio, external and internal shoulder impression area ratio) which have high correlation to tire wet grip performance, and three grounding characteristic parameters (external shoulder width, external shoulder length-to-width ratio, external and internal shoulder width ratio) which have low correlation to the wet grip performance of the tire. The principal component analysis method was used to analyze the highly correlated grounding characteristic parameters, and the regression equation for evaluating tire wet grip performance was fitted. The comparison of experimental and fitted values show that the errors are within 4%. The result demonstrates that, the method for evaluating wet grip performance of the radial tire through tire-road grounding characteristics was achieved.

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Development of an Innovative Instrument for Non-destructive Viscoelasticity Characterization: VESevo

Cited by 15 publications

References 14 publications

Tyre Mechanics and Thermal Effects on Tyre Behaviour

Tyre Mechanics and Thermal Effects on Tyre Behaviour

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

A method for tire wet grip performance evaluation based on grounding characteristics

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