Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Nuno Monteiro Azevedo"'
Publikováno v:
Infrastructures, Vol 9, Iss 7, p 118 (2024)
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 increme
Externí odkaz:
https://doaj.org/article/ac371264d2644870b83436a5015048d9
Publikováno v:
Buildings, Vol 14, Iss 3, p 801 (2024)
To obtain predictions closer to concrete behaviour, it is necessary to employ a particle model (PM) that considers contact softening. A bilinear softening contact model (BL) has been adopted in PM studies. Several limitations in PM predictions have b
Externí odkaz:
https://doaj.org/article/5ea3a8d4381947cea86072ccf049ac01
Publikováno v:
Buildings, Vol 13, Iss 12, p 3023 (2023)
Encapsulated rejuvenators embedded in asphalt mixtures are a promising technology to extend the service life of asphalt pavements. However, their effects on the asphalt mixture’s performance still need to be properly understood. A recently develope
Externí odkaz:
https://doaj.org/article/6e670673b94649f0acbd7f223b7fa1c1
Publikováno v:
Geotechnics, Vol 2, Iss 3, Pp 523-548 (2022)
Circular/spherical rigid particle models that were initially applied to rock fracture studies were not able to match the ratio of the compressive strength to tensile strength that occurs in rock. In addition, the predicted macroscopic friction angle
Externí odkaz:
https://doaj.org/article/8db3db13ddbd4b57b59a8591183d0a16
Autor:
Nuno Monteiro Azevedo, José V. Lemos
Publikováno v:
Applied Mechanics, Vol 3, Iss 2, Pp 608-627 (2022)
Circular and spherical particle models are a class of discrete elements (DEM) that have been increasingly applied to fracture studies of quasi-brittle materials, such as rock and concrete, due to their proven ability to simulate fracture processes th
Externí odkaz:
https://doaj.org/article/bb335d4c400f4d6e8bee557443e3bb6d
Autor:
Maria Luísa Braga Farinha, Nuno Monteiro Azevedo, Noemi Alejandra Schclar Leitão, João Rocha de Almeida, Sérgio Oliveira
Publikováno v:
Geotechnics, Vol 2, Iss 1, Pp 133-157 (2022)
Evaluation of the sliding stability of concrete dams requires the use of numerical tools not only able to simulate the coupled hydromechanical behavior but also able to adequately represent the foundation discontinuities and the specific features of
Externí odkaz:
https://doaj.org/article/5760dc71268549eabf0b0566c52b8b8a
Publikováno v:
Buildings, Vol 13, Iss 4, p 987 (2023)
The structural rehabilitation of historic/traditional rubble masonry wall constructions requires consolidation and retrofitting solutions to be employed in order to withstand dynamic loads, high vertical loads, and differential settlements. One of th
Externí odkaz:
https://doaj.org/article/e724b83c7cb24722bf143a04c37032aa
Publikováno v:
Buildings, Vol 12, Iss 8, p 1283 (2022)
To predict the structural behaviour of ancient stone masonry walls is still a challenging task due to their strong heterogeneity. A rubble-stone masonry modeling methodology using a 2D particle model (2D-PM), based on the discrete element method is p
Externí odkaz:
https://doaj.org/article/c7ffcfb6d8454aa9a6f246b87e989cc2
Publikováno v:
Geotecnia, Iss 151 (2021)
Neste artigo apresenta-se a formulação e resultados da aplicação de dois modelos descontínuos tridimensionais que simulam a interação hidromecânica. Nestes modelos o comportamento mecânico é simulado de forma idêntica mas o comportamento h
Externí odkaz:
https://doaj.org/article/38bbe0a20d5441bdbaa4395db00313e8
Publikováno v:
Geotecnia, Iss 143 (2018)
Os modelos de partículas, ao terem em conta a estrutura granular da rocha, consideram de forma explícita a variabilidade associada ao material, razão pela qual têm sido aplicados com sucesso no estudo da fratura em rocha. Neste trabalho é aprese
Externí odkaz:
https://doaj.org/article/e460a7fa89ad413098c34313e63d013e