análise estrutural de silos metálicos prismáticos structural analysis of prismatic metallic silos
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ID: 247298
2008
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Abstract
Nos últimos anos, o crescimento da agricultura brasileira tem forçado vários setores a se adequarem aos padrões produtivos com o intuito de se manterem competitivos, frente ao processo de globalização econômica. Nesse contexto, as fábricas de ração avícola tendem a buscar novas alternativas que favoreçam a produção e reduzam custos sem afetar a qualidade do produto final. Entre essas alternativas, destaca-se o uso de silos verticais por facilitar o processo de confecção das rações e eliminar os grandes depósitos horizontais. Diante dessa possibilidade, objetivou-se, com a presente pesquisa, estudar as tensões nas paredes em conformação ziguezague de um silo metálico prismático 2m x 1m e comparar os resultados obtidos com teorias e normas. Para o cálculo das tensões, utilizaram-se os métodos simplificados de Ravenet e Troitsky. Para a obtenção dos esforços reais nas paredes, utilizaram-se extensômetros elétricos. Dessa forma, conclui-se que, tanto a teoria de Ravenet quanto de Troistky, podem ser recomendadas para o dimensionamento de silos prismáticos por apresentarem boa aproximação com valores experimentais.
Recently Brazil has undergone agricultural growth that has forced several sectors to adjust their business structure to maintain competitiveness within the process of economic globalization. In this context, the poultry production has focused on new alternatives to increase productivity and reduce costs without affecting the quality of the final product. Among these alternatives, the use of vertical silos due to their capacity and ease of accurate feed ingredient rationing and eliminate large horizontal warehouses. The present research has focused on the stresses in rectangular, hopper bottom bins with a unique zigzag corrugation. The model bin was 2m x 1m with a hopper and the stresses obtained were compared to theories and standards. The stresses were estimated using Ravenet and Troitsky's simplified methods and compared to the experimental results. Strain gauges were used to obtain data on the stress within the bin walls. One concluded that either Ravenet or Troitsky's theory may be recommended for the design of rectangular silos since they provide a high level of accuracy compared to experimental values.
Recently Brazil has undergone agricultural growth that has forced several sectors to adjust their business structure to maintain competitiveness within the process of economic globalization. In this context, the poultry production has focused on new alternatives to increase productivity and reduce costs without affecting the quality of the final product. Among these alternatives, the use of vertical silos due to their capacity and ease of accurate feed ingredient rationing and eliminate large horizontal warehouses. The present research has focused on the stresses in rectangular, hopper bottom bins with a unique zigzag corrugation. The model bin was 2m x 1m with a hopper and the stresses obtained were compared to theories and standards. The stresses were estimated using Ravenet and Troitsky's simplified methods and compared to the experimental results. Strain gauges were used to obtain data on the stress within the bin walls. One concluded that either Ravenet or Troitsky's theory may be recommended for the design of rectangular silos since they provide a high level of accuracy compared to experimental values.
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neto2008cinciaanlise
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| Authors | ;José Pinheiro Lopes Neto;José Wallace Barbosa do Nascimento;Carlito Calil Junior |
| Journal | information and software technology |
| Year | 2008 |
| DOI |
10.1590/S1413-70542008000400033
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