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Abstract(s)
Este trabalho foi realizado com o apoio, e em colaboração da empresa Flexcrane, que
constrói e comercializa soluções flexíveis de pontes rolantes para cargas ligeiras. Com
cargas máximas de 2 toneladas estas pontes e seus caminhos de rolamento são construídas
essencialmente enformados a frio.
O objetivo deste trabalho é a verificação numérica e experimental das cargas que este tipo
de estrutura suporta, nas suas diferentes configurações.
Numa aproximação por engenharia inversa, com a realização deste trabalho, foi possível
determinar a carga admissível das vigas compostas utilizadas, assim como o seu
comportamento quando em carga.
Para obtenção destes resultados foram realizadas simulações computacionais recorrendo ao
método de elementos finitos, utilizando para isso o software Ansys Workbench e ainda
ensaios experimentais que permitiram validar os resultados obtidos numericamente e
consolidar o conhecimento sobre o comportamento desta solução comercial.
Por ser de construção modular, são possíveis diferentes combinações para o produto final,
por esta razão foram estudados numericamente diferentes configurações possíveis, com e
sem reforços. Foi realizada a validação experimental para a configuração mais usual,
fazendo recurso a um dispositivo para ensaio de estruturas e componentes, pertencente ao
Isep. Foi ainda utilizada a técnica extensométrica para avaliar as tensões em pontos
selecionados e compara-los com os obtidos numericamente.
Concluiu-se pelo ótimo desempenho dos produtos Flexcrane.
This work was carried out with the support and collaboration of enterprise FLEX CRANE, who builds and sells flexible solutions of cranes for light loads. With maximum loads of 2 tones these cranes and their bearing paths are constructed in cold formed profiles. The aim of this work is the numerical and experimental verification of the ultimate load that this type of structure supports, in its various configurations. In a reverse engineering approach, with this work, it was possible to determine the permissible load of the compose beams and your behavior when under load. To obtain these results were performed theoretical calculations based on mechanics of materials, computer simulations using the finite element method using Ansys Workbench software and experimental tests to validate the numerical results and consolidate the knowledge about the behavior of this solution. Because is used a modular construction, different combinations are possible for the final product. For this reason it was numerically stud different possible configuration, with and without reinforcements. Experimental validation was performed for the most usual configuration, making use of a device for testing of structures and components in ISEP. It was also used the strain gauge technique to assess stress in selected points and compares them with those obtained numerically. It was concluded by the great performance of Flexcrane products.
This work was carried out with the support and collaboration of enterprise FLEX CRANE, who builds and sells flexible solutions of cranes for light loads. With maximum loads of 2 tones these cranes and their bearing paths are constructed in cold formed profiles. The aim of this work is the numerical and experimental verification of the ultimate load that this type of structure supports, in its various configurations. In a reverse engineering approach, with this work, it was possible to determine the permissible load of the compose beams and your behavior when under load. To obtain these results were performed theoretical calculations based on mechanics of materials, computer simulations using the finite element method using Ansys Workbench software and experimental tests to validate the numerical results and consolidate the knowledge about the behavior of this solution. Because is used a modular construction, different combinations are possible for the final product. For this reason it was numerically stud different possible configuration, with and without reinforcements. Experimental validation was performed for the most usual configuration, making use of a device for testing of structures and components in ISEP. It was also used the strain gauge technique to assess stress in selected points and compares them with those obtained numerically. It was concluded by the great performance of Flexcrane products.
Description
Keywords
Ponte rolante Enformados a frio Vigas compostas Simulações numéricas Estruturas modulares Técnicas experimentais Extensometria Cranes Cold formed profiles Compose beams Numerical simulation Modular construction Strain gauge