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177 results on '"Simões da Silva, Luís"'

1. Cyclic Modelling of Bolted Beam-to-Column Steel Joints: Component Model Implementation Incorporating Pinching and Stiffness and Strength Degradation

Author

Simões da Silva, Luís, Costa, Ricardo, Oliveira, Sara, Santos, Ana Francisca, Rebelo, Carlos, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Mazzolani, Federico M., editor, Piluso, Vincenzo, editor, Nastri, Elide, editor, and Formisano, Antonio, editor

Published
2024
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4. Macro-modelling of the Three-Dimensional Interaction Between the Faces of a Steel Tubular Column Joint

Author

Miculaş, C. V., Costa, R. J., Simões da Silva, Luís, Simões, R., Craveiro, H., Tankova, T., di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Di Trapani, Fabio, editor, Demartino, Cristoforo, editor, Marano, Giuseppe Carlo, editor, and Monti, Giorgio, editor

Published
2023
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24. Parametric evaluation of heat transfer mechanisms in a WUI fire scenario.

Author

Fiorini, Cesare, Craveiro, Hélder D., Santiago, Aldina, Laím, Luís, and Simões da Silva, Luís

Subjects
HEAT transfer, FOREST fire prevention & control, HEAT release rates, COMPUTATIONAL fluid dynamics, WILDLAND-urban interface, HEAT flux
Abstract

Background: Wildland–urban interface (WUI) fires are becoming more frequent and catastrophic as they are associated with the effects of climate change, demographic pressure, human activities, abandonment of rural areas and activities promoting dangerous fuel continuity. For example, in the central regions of Portugal, Chile and California, severe direct and indirect impacts have been observed, with a catastrophic number of fatalities. Aims: Mitigating and reducing the impacts of wildfires in the WUI requires understanding heat transfer mechanisms from forest fires and understanding how structures ignite is crucial to define and implement new mitigation strategies. Methods: Adopting Computational Fluid Dynamics is essential to assess the WUI fire problem by simulating fire behaviour and quantifying its characteristics. In this paper, a building is exposed to several wildfire scenarios, assessing the influence of parameters such as materials, fuels, topography and meteorological conditions. Key results: The investigated scenarios were developed considering validated Fire Dynamics Simulator (FDS) models of single trees on fire and the influence of governing parameters was quantified. Conclusions: For the selected scenarios, the impacts on the building were assessed and compared, quantifying heat release rates, radiative heat flux and adiabatic surface temperature. Implications: This research contributes to a Performance-Based Design (PBD) approach for buildings in the WUI. WUI fires are becoming more catastrophic as they are associated with the effects of climate change and human activities. Understanding heat transfer mechanisms from forest fires and how structures ignite is crucial for the definition and implementation of new strategies and techniques, enabling a Performance-Based Design (PBD) approach. [ABSTRACT FROM AUTHOR]

Published
2023
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50. Structural member stability verification in the new Part 1-1 of the second generation of Eurocode 3

Author

Knobloch, Markus (Prof. Dr.), Bureau, Alain, Kuhlmann, Ulrike (Prof. Dr.-Ing.), Simões Da Silva, Luís (Prof. Dr.), Snijder, Hubertus H. (Prof. Ir), Taras, Andreas (Prof. Dr. techn.), Bours, Anna-Lena (M. Sc.), and Jörg, Fabian (M. Sc.)

Subjects
ddc:624
Abstract

This two-part article gives an overview of the developments of the structural member verification in prEN 1993-1-1:2020 ”Eurocode 3: Design of steel structures – part 1-1: General rules and rules for buildings“, one of the second generation of Eurocodes. These developments were undertaken by Working Group 1 (WG1) of Subcommittee CEN/TC250/SC3 and by Project Team 1 (SC3.PT1) responsible for drafting the new version of EN 1993-1-1. In the past, WG1 collected many topics needing improvement, and the systematic review conducted every five years also yielded topics needing further development. Based on this, the current version of EN 1993-1-1 has been developed into a new draft version prEN 1993-1-1:2020 enhancing ”ease of use“. The technical content of this new draft was laid down at the end of 2019. Many improvements to design rules have been established with respect to structural analysis, resistance of cross-sections and stability of members. This two-part article focuses on member stability design rules and deals with the basis for the calibration of partial factors, the introduction of more economic design rules for semi-compact sections, methods for structural analysis in relation to the appropriate member stability design rules, new design rules for lateral torsional buckling plus other developments and innovations. This second part of the article is dedicated to illustrating the most relevant changes to member buckling design rules.

Published
2020

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