A Review on Modelling of Viscoelastic Contact Problems

Wang, Dongze; Boer, Gregory de; Neville, Anne; Ghanbarzadeh, Ali

doi:10.3390/lubricants10120358

Cited by 18 publications

(9 citation statements)

References 185 publications

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“…Nineteen viscoelastic models were summarized by Neville et al [ 35 ] and it was concluded that, when the number of elements is too large, some ill-posed problems are introduced. Therefore, simplifying the number of elements and parameters of the viscoelastic model not only facilitates the calculation process, but also helps to clarify the physical meaning of the model parameters [ 36 ].…”

Section: Comparisons Between Experimental Results and Predictionsmentioning

confidence: 99%

Calculation of Short-Term Creep of Concrete Using Fractional Viscoelastic Model

Mei

Wang

et al. 2023

Materials

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The study of short-term creep is essential for understanding the concrete creep process and deformation under alternating stress. Researchers are concentrating on the nano- and micron-scale creep of cement pastes. In the latest RILEM creep database, short-term concrete creep data at hourly or minutely levels are still rare and scarce. In order to describe the short-term creep and creep-recovery behavior of concrete specimens more accurately, the short-term creep and creep-recovery experiments were carried out firstly. The load-holding time varied from 60 s to 1800 s. Secondly, the accuracy of current creep models (B4, B4s, MC2010, and ACI209) in predicting the short-term creep of concrete was compared. It was discovered that the B4, B4s, and MC2010 models all overestimate concrete’s short-term creep, and the ACI model does the opposite. Thirdly, the applicability of the fractional-order-derivative viscoelastic model (with a derivative order between 0 and 1) in the calculation of the short-term creep and creep recovery of concrete is investigated. The calculation results show that the fractional-order derivatives are more suitable for analyzing the static viscoelastic deformation of concrete while the classical viscoelastic model requires a large number of parameters. Therefore, a modified fractional-order viscoelastic model is proposed considering the residual deformation characteristics of concrete after unloading, and the values of the model parameters under different conditions are given with the experimental data.

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Section: Comparisons Between Experimental Results and Predictionsmentioning

confidence: 99%

Calculation of Short-Term Creep of Concrete Using Fractional Viscoelastic Model

Mei

Wang

et al. 2023

Materials

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“…In the last couple of years, the VESevo technology has been used in a wide range of applications, each usually proposed by new kinds of users, proposing procedures linked to their areas of interest: Providing measurements to objectivize the differences among the various compounds used for tire treads (with important impacts on determining the optimal thermal window in which each compound has to be used), getting data for FEA (finite element analysis) [ 16 ], CFD (computational fluid dynamics) [ 17 ], friction [ 18 ], and wear [ 19 ] models, both in motorsport and passenger contexts; assessing the optimal vulcanization and manufacturing setup conditions, with a direct evaluation of their effects, from the tire just produced to its progressive degradation in the aging process acting in the lifecycle, or helping to define the optimal “curing cycles”; the motorsport teams are used to apply to the tires to enhance their adhesive and hysteretic frictional attitudes; monitoring the evolution of the viscoelastic characteristics due to wear (conceived as both progressive tread thickness reduction [ 20 ] under tangential interaction stresses and progressive mechanical degradation due to hysteretic cycles and chemical decay [ 21 ]) during the whole life of the tested tire, allowing to correlate the energy provided to it (for frictional forces, for rolling resistance cycles, for UV radiation effect) with the direct effects on the material, observable from its first instant of life, to the ultimate phase of use; improving the effectiveness of the on-site quality control methodologies [ 22 ], acting as a sort of “fast and portable DMA” directly on the tire production line, checking the viscoelastic uniformity along the circumferential and transversal direction for car, truck, aircraft, motorcycle, and bike tires, and for slick or ribbed tread patterns. …”

Section: Introductionmentioning

confidence: 99%

“…Providing measurements to objectivize the differences among the various compounds used for tire treads (with important impacts on determining the optimal thermal window in which each compound has to be used), getting data for FEA (finite element analysis) [ 16 ], CFD (computational fluid dynamics) [ 17 ], friction [ 18 ], and wear [ 19 ] models, both in motorsport and passenger contexts;…”

Section: Introductionmentioning

confidence: 99%

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

Farroni,

Timpone,

Genovese

2024

Sensors

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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. To analyze and understand such properties of viscoelastic materials, destructive tests like dynamic mechanical analysis (DMA) are used, which make the tire unusable after the test; these are usually carried out on specimens cut from the zone of interest. The development of an innovative testing methodology connected to a hardware device called VESevo allows the characterization of the viscoelastic properties of tire compounds belonging to tread or other parts in a fast and nondestructive way. This new device provides valuable information about the evolution of the tire’s viscoelastic properties, allowing it to monitor them throughout the whole lifecycle. In the paper, an overview of the possible sensitivities that can be investigated thanks to the VESevo is provided: The tread viscoelasticity was characterized and monitored for several tire tread compounds, over tire mileage, over tread thermal curing cycles, and as an index of the tread quality and uniformity in production. Preliminary results were collected and are presented. In the final paragraph, further recent applications developed from the tire field, which are not directly related, are reported.

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“…The case of a Kelvin-Voigt solid (with accounting for the unloading stage) was considered by Khusid [51] (see also [29]), who obtained some numerical results for the impact duration and the coefficient of restitution. A systematic review of modeling linear and non-linear viscoelastic contact problems was recently given by Wang et al [52].…”

Section: Introductionmentioning

confidence: 99%

Viscoelastic Hertzian Impact

Argatov

2024

Lubricants

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The problem of normal impact of a rigid sphere on a Maxwell viscoelastic solid half-space is considered. The first-order asymptotic solution is constructed in the framework of Hunter’s model of viscoelastic impact. In particular, simple analytical approximations have been derived for the maximum contact force and the time to achieve it. A linear regression method is suggested for evaluating the instantaneous elastic modulus and the mean relaxation time from a set of experimental data collected for different spherical impactors and impact velocities.

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A Review on Modelling of Viscoelastic Contact Problems

Cited by 18 publications

References 185 publications

Calculation of Short-Term Creep of Concrete Using Fractional Viscoelastic Model

Calculation of Short-Term Creep of Concrete Using Fractional Viscoelastic Model

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

Viscoelastic Hertzian Impact

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