Browsing by Author "Junior, Laercio J."
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- Metodologia participativa sobre a avaliação do comportamento ao fogo de lajes em madeira como contributo na segurançaPublication . Costa, Gabriel N.S.; Fonseca, E.M.M.; Junior, Laercio J.• A madeira é um material de construção muito utilizado, tanto em Portugal como no Brasil, nomeadamente em pavimentos, paredes e soalhos. • A madeira é um recurso renovável. • A madeira possui excelentes características arquitetônicas, térmicas e acústicas, permitindo a assemblagem fácil de conjuntos. • A madeira quando exposta a ações acidentais, tais como condições de incêndio, apresenta a formação de uma camada de carbono na superfície. • No entanto, esta camada pode atrasar o processo de aquecimento para a secção de núcleo, atuando como um isolante. • O complexo comportamento ao fogo é o alvo de estudo deste trabalho.
- Numerical model to evaluate the protected and unprotected wooden slabs under firePublication . Costa, Gabriel N.S.; Fonseca, E.M.M.; Junior, Laercio J.The main objective of this work is to present a numerical methodology, based on the finite element program, to predict the thermal assessment in wooden cellular slabs under fire. The designed wood models represent different building applications in construction engineering, as walls, ceilings and floors. The proposed models represent protected and unprotected wooden slabs to determine the fire resistance, and increase the use prevention of these materials.
- Numerical model to evaluate the protected and unprotected wooden slabs under firePublication . Costa, Gabriel N.S.; Fonseca, E.M.M.; Junior, Laercio J.The main goal of this study is to evaluate the thermal behaviour of wooden cellular slabs exposed to fire conditions, according the standard ISO 843 curve. Different numerical simulations for nonlinear thermal and transient analysis will be obtained, using the finite element method. The importance of this study relies on its contribution to an alternative numerical methodology, which allows to determine the safety and fire resistance levels in wooden cellular slabs, with or without insulation materials.
- Protected and unprotected cellular wooden slabs at elevated temperaturesPublication . Costa, Gabriel N.S.; Fonseca, E.M.M.; Junior, Laercio J.The aim of this work is to present a numerical approach, based on finite element method, to predict the thermal assessment in protected and unprotected cellular wooden slabs, externally exposed to fire, using the standard ISO 843 curve. All numerical calculations will be performed to determine the wood residual cross-section and to determine the fire resistance with the use of insulation materials.