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A semi-physical thermodynamic transient rolling resistance model with nonlinear viscoelasticity
Springer Science and Business Media LLC - - Trang 1-22 - 2023
Jukka Hyttinen, Rickard Österlöf, Jenny Jerrelind, Lars Drugge
Rolling resistance dictates a large part of the energy consumption of trucks. Therefore, it is necessary to have a sound understanding of the parameters affecting rolling resistance. This article proposes a semi-physical thermodynamic tyre rolling resistance model, which captures the essential properties of rolling resistance, such as transient changes due to temperature effects and the strain-amp...... hiện toàn bộ
Thermodiffusion interactions in a homogeneous spherical shell based on the modified Moore–Gibson–Thompson theory with two time delays
Springer Science and Business Media LLC - - Trang 1-22 - 2023
Doaa Atta, Ahmed E. Abouelregal, Hamid M. Sedighi, Rasmiyah A. Alharb
The main objective of the present paper is to investigate the relationship between the thermal processes and diffusion in thermoelastic solids. For this reason, a new model of thermo-diffusion interactions has been derived, which, unlike the traditional models, allows the thermo-diffusion waves to propagate at finite speeds. The Moore–Gibson–Thompson (MGT) equation is an essential part of the prop...... hiện toàn bộ
A fractional derivative approach to full creep regions in salt rock
Springer Science and Business Media LLC - Tập 17 - Trang 413-425 - 2012
H. W. Zhou, C. P. Wang, L. Mishnaevsky, Z. Q. Duan, J. Y. Ding
Based on the definition of the constant-viscosity Abel dashpot, a new creep element, referred to as the variable-viscosity Abel dashpot, is proposed to characterize damage growth in salt rock samples during creep tests. Ultrasonic testing is employed to determine a formula of the variable viscosity coefficient, indicating that the change of the variable viscosity coefficient with the time meets a ...... hiện toàn bộ
Modeling compressive basic creep of concrete at early age
Springer Science and Business Media LLC - - Trang 1-20 - 2024
Brice Delsaute, Jean Michel Torrenti, Boumediene Nedjar, Stéphanie Staquet, Agathe Bourchy, Matthieu Briffaut
Basic creep plays an important role in assessing the risk of early-age cracking in massive structures. In recent decades, several models have been developed to characterize how the hydration process impacts the development of basic creep. This study investigates the basic creep of various concrete mixes across different ages at loading. The analysis focuses on the very early stages (less than 24 h...... hiện toàn bộ
Time Dependence in Material Properties: An Overview
Springer Science and Business Media LLC - Tập 1 - Trang 3-31 - 1997
N.W. Tschoegl
This article presents an overview of time dependence in the mechanical properties of materials, and of the methods to describe it.
Fractional order creep model for dam concrete considering degree of hydration
Springer Science and Business Media LLC - - 2019
Yaoying Huang, Lei Xiao, Tengfei Bao, Yu Liu
Thermal stresses of asphalt pavement under dependence of material characteristics on reference temperature
Springer Science and Business Media LLC - Tập 13 - Trang 81-91 - 2008
Yang Zhong, Litao Geng
This thesis presents an analytical study of thermal stresses of asphalt pavement under dependence of material characteristics on reference temperature. In the analysis, flexible pavement is regarded as a multi-layered elastic half-space axisymmetrical system. Firstly, thermo-elastic theory is used to describe thermal stresses of a multi-layered system, while the temperature-dependent material char...... hiện toàn bộ
Nonlinear Viscoelastic and Viscoplastic Constitutive Equations Based on Thermodynamics
Springer Science and Business Media LLC - Tập 1 - Trang 209-240 - 1997
R.A. Schapery
An approach to modeling the mechanical behavior of fiber reinforced and unreinforced plastics with an evolving internal state is described. Intrinsic nonlinear viscoelastic and viscoplastic behavior of the resin matrix is taken into account along with growth of damage. The thermodynamic framework of the method is discussed first. The Gibbs free energy is expressed in terms of stresses, internal st...... hiện toàn bộ
Accelerated creep model based on the law of energy conservation and analysis of creep parameters
Springer Science and Business Media LLC - - Trang 1-28 - 2023
Wenbo Liu, Shuguang Zhang
This study presents a model to accurately describe the nonlinear deformation pattern of rock creep damage process by incorporating energy principles. The model captures the accelerated creep deformation pattern by considering the relationship between time and creep parameters at each stage of rock creep. A nonlinear creep model based on energy conservation is developed by integrating the time-depe...... hiện toàn bộ
Nonlinear Shear Behavior of Poly(vinyl acetate) Material
Springer Science and Business Media LLC - Tập 2 - Trang 287-305 - 1998
R.J. Arenz
Because of the strong environmental sensitivity of poly(vinyl acetate), PVAc, especially with respect to moisture, and the fact that shear deformation is essentially equivoluminal up to moderate strain levels, little has been reported in the literature on the nonlinear mechanical creep behavior of this polymeric material loaded in shear. This paper presents the results of torsional tests which est...... hiện toàn bộ
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