A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Incremental Viscoelastic Damage Contact Models for Asphalt Mixture Fracture Assessment
Funding Information: This work is part of the research activity carried out at Civil Engineering Research and Innovation for Sustainability (CERIS) and has been funded by Fundação para a Ciência e a Tecnologia (FCT) in the framework of project number [UIDB/04625/2020]. https://doi.org/10.54499/UIDB/04625/2020. This work was also financed by FCT and MCTES through national funds (PIDDAC) under the R&D Unit Institute for Sustainability and Innovation in Structural Engineering (ISISE), under reference UIDB/04029/2020 (https://doi.org/10.54499/UIDB/04029/2020), and under the Associate Laboratory Advanced Production and Intelligent Systems ARISE under reference LA/P/0112/2020. Publisher Copyright: © 2024 by the authors. ; Asphalt mixtures are widely used as a surfacing material for pavements due to their several advantages. For this reason, robust numerical models still need to be developed to improve the understanding of their fracture behaviour. Recently, an incremental generalised Kelvin (GK) contact model that relates increments in contact displacements with increments in contact forces was proposed to assess the viscoelastic behaviour of asphalt mixtures within a discrete element method (DEM) framework. In this work, the contact model is extended to allow its application to asphalt mixture fracture studies. Two damage models—a brittle and a bilinear softening—coupled with the GK contact model are proposed to consider damage initiation and propagation. A parametric study is presented that assesses the impact of the GK-Damage parameters, showing a sensitivity to the loading velocity and the Maxwell elements, particularly its viscosity element, on the stress–strain response of a single contact. A reduced-size numerical mastic is initially used to speed up the calibration process of the GK-Damage contact parameters, with subsequent validation on a specimen with real experimental dimensions. It is shown that the proposed calibrated damage models can successfully reproduce the time-dependent behaviour, peak stress, ...
Incremental Viscoelastic Damage Contact Models for Asphalt Mixture Fracture Assessment
Funding Information: This work is part of the research activity carried out at Civil Engineering Research and Innovation for Sustainability (CERIS) and has been funded by Fundação para a Ciência e a Tecnologia (FCT) in the framework of project number [UIDB/04625/2020]. https://doi.org/10.54499/UIDB/04625/2020. This work was also financed by FCT and MCTES through national funds (PIDDAC) under the R&D Unit Institute for Sustainability and Innovation in Structural Engineering (ISISE), under reference UIDB/04029/2020 (https://doi.org/10.54499/UIDB/04029/2020), and under the Associate Laboratory Advanced Production and Intelligent Systems ARISE under reference LA/P/0112/2020. Publisher Copyright: © 2024 by the authors. ; Asphalt mixtures are widely used as a surfacing material for pavements due to their several advantages. For this reason, robust numerical models still need to be developed to improve the understanding of their fracture behaviour. Recently, an incremental generalised Kelvin (GK) contact model that relates increments in contact displacements with increments in contact forces was proposed to assess the viscoelastic behaviour of asphalt mixtures within a discrete element method (DEM) framework. In this work, the contact model is extended to allow its application to asphalt mixture fracture studies. Two damage models—a brittle and a bilinear softening—coupled with the GK contact model are proposed to consider damage initiation and propagation. A parametric study is presented that assesses the impact of the GK-Damage parameters, showing a sensitivity to the loading velocity and the Maxwell elements, particularly its viscosity element, on the stress–strain response of a single contact. A reduced-size numerical mastic is initially used to speed up the calibration process of the GK-Damage contact parameters, with subsequent validation on a specimen with real experimental dimensions. It is shown that the proposed calibrated damage models can successfully reproduce the time-dependent behaviour, peak stress, ...
Incremental Viscoelastic Damage Contact Models for Asphalt Mixture Fracture Assessment
Câmara, Gustavo (author) / Micaelo, Rui (author) / Azevedo, Nuno Monteiro (author) / Silva, Hugo (author) / DEC - Departamento de Engenharia Civil / CERIS - Polo NOVA
2024-07-22
Article (Journal)
Electronic Resource
English
Incremental Viscoelastic Damage Contact Models for Asphalt Mixture Fracture Assessment
| DOAJ | 2024
Mesostructural damage simulation of asphalt mixture using microscopic interface contact models
| British Library Online Contents | 2014
Mesostructural damage simulation of asphalt mixture using microscopic interface contact models
| British Library Online Contents | 2014
Mesostructural damage simulation of asphalt mixture using microscopic interface contact models
| Online Contents | 2014
Energy-based damage and fracture framework for viscoelastic asphalt concrete
| British Library Online Contents | 2015