EXPERIMENTAL PRESSURES EXERTED BY MAIZE IN SLENDER CYLINDRICAL SILO: COMPARISON WITH ISO 11697

EXPERIMENTAL PRESSURES EXERTED BY MAIZE IN SLENDER CYLINDRICAL SILO: COMPARISON WITH ISO 11697

ABSTRACT Pilot-scale test stations make it possible to obtain reliable and comparable results applicable to full–scale systems by conforming to specified proportional limits. Therefore, in this study, normal and frictional pressures were evaluated in a pilot-scale test station composed of a slender cylinder silo using maize, a free-flowing product, as the stored product. Temporal effects were analyzed and verified during filling, static, and discharge conditions. The maximum normal and frictional pressures were also evaluated. The results were compared with ISO 11697: 1995. During filling, accommodation peaks occurred only in the α: 30° hopper. In general, normal pressures were higher for the flat bottom whereas higher frictional pressures occurred for the 30° hopper. The maximum experimental pressures (normal and frictional) were lower than those provided by ISO 11697. Therefore, it is concluded that the coefficients used in the ISO standard are sufficient to promote safety in silo projects.

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Main Authors: Gandia,Rômulo M., Oliveira Júnior,Estácio A. de, Gomes,Francisco C., Paula,Wisner C. de, Dornelas,Karoline C.
Format: Digital revista
Language:English
Published: Associação Brasileira de Engenharia Agrícola 2021
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162021000600576
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spelling oai:scielo:S0100-691620210006005762021-12-15EXPERIMENTAL PRESSURES EXERTED BY MAIZE IN SLENDER CYLINDRICAL SILO: COMPARISON WITH ISO 11697Gandia,Rômulo M.Oliveira Júnior,Estácio A. deGomes,Francisco C.Paula,Wisner C. deDornelas,Karoline C. funnel flow normal pressures frictional pressures test silo ABSTRACT Pilot-scale test stations make it possible to obtain reliable and comparable results applicable to full–scale systems by conforming to specified proportional limits. Therefore, in this study, normal and frictional pressures were evaluated in a pilot-scale test station composed of a slender cylinder silo using maize, a free-flowing product, as the stored product. Temporal effects were analyzed and verified during filling, static, and discharge conditions. The maximum normal and frictional pressures were also evaluated. The results were compared with ISO 11697: 1995. During filling, accommodation peaks occurred only in the α: 30° hopper. In general, normal pressures were higher for the flat bottom whereas higher frictional pressures occurred for the 30° hopper. The maximum experimental pressures (normal and frictional) were lower than those provided by ISO 11697. Therefore, it is concluded that the coefficients used in the ISO standard are sufficient to promote safety in silo projects.info:eu-repo/semantics/openAccessAssociação Brasileira de Engenharia AgrícolaEngenharia Agrícola v.41 n.6 20212021-12-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162021000600576en10.1590/1809-4430-eng.agric.v41n6p576-590/2021
institution SCIELO
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country Brasil
countrycode BR
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databasecode rev-scielo-br
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region America del Sur
libraryname SciELO
language English
format Digital
author Gandia,Rômulo M.
Oliveira Júnior,Estácio A. de
Gomes,Francisco C.
Paula,Wisner C. de
Dornelas,Karoline C.
spellingShingle Gandia,Rômulo M.
Oliveira Júnior,Estácio A. de
Gomes,Francisco C.
Paula,Wisner C. de
Dornelas,Karoline C.
EXPERIMENTAL PRESSURES EXERTED BY MAIZE IN SLENDER CYLINDRICAL SILO: COMPARISON WITH ISO 11697
author_facet Gandia,Rômulo M.
Oliveira Júnior,Estácio A. de
Gomes,Francisco C.
Paula,Wisner C. de
Dornelas,Karoline C.
author_sort Gandia,Rômulo M.
title EXPERIMENTAL PRESSURES EXERTED BY MAIZE IN SLENDER CYLINDRICAL SILO: COMPARISON WITH ISO 11697
title_short EXPERIMENTAL PRESSURES EXERTED BY MAIZE IN SLENDER CYLINDRICAL SILO: COMPARISON WITH ISO 11697
title_full EXPERIMENTAL PRESSURES EXERTED BY MAIZE IN SLENDER CYLINDRICAL SILO: COMPARISON WITH ISO 11697
title_fullStr EXPERIMENTAL PRESSURES EXERTED BY MAIZE IN SLENDER CYLINDRICAL SILO: COMPARISON WITH ISO 11697
title_full_unstemmed EXPERIMENTAL PRESSURES EXERTED BY MAIZE IN SLENDER CYLINDRICAL SILO: COMPARISON WITH ISO 11697
title_sort experimental pressures exerted by maize in slender cylindrical silo: comparison with iso 11697
description ABSTRACT Pilot-scale test stations make it possible to obtain reliable and comparable results applicable to full–scale systems by conforming to specified proportional limits. Therefore, in this study, normal and frictional pressures were evaluated in a pilot-scale test station composed of a slender cylinder silo using maize, a free-flowing product, as the stored product. Temporal effects were analyzed and verified during filling, static, and discharge conditions. The maximum normal and frictional pressures were also evaluated. The results were compared with ISO 11697: 1995. During filling, accommodation peaks occurred only in the α: 30° hopper. In general, normal pressures were higher for the flat bottom whereas higher frictional pressures occurred for the 30° hopper. The maximum experimental pressures (normal and frictional) were lower than those provided by ISO 11697. Therefore, it is concluded that the coefficients used in the ISO standard are sufficient to promote safety in silo projects.
publisher Associação Brasileira de Engenharia Agrícola
publishDate 2021
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162021000600576
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AT paulawisnercde experimentalpressuresexertedbymaizeinslendercylindricalsilocomparisonwithiso11697
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