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

被引：0

作者：

Gandia, Romulo M. ^{[1
]}

de Oliveira, Estacio A., Jr. ^{[1
]}

Gomes, Francisco C. ^{[1
]}

de Paula, Wisner C. ^{[1
]}

Dornelas, Karoline C. ^{[2
]}

机构：

[1] Univ Fed Lavras, Lavras, MG, Brazil

[2] Univ Fed Mato Grosso, Campus Sinop, Sinop, MT, Brazil

来源：

ENGENHARIA AGRICOLA | 2021年 / 41卷 / 06期

关键词：

funnel flow; normal pressures; frictional pressures; test silo; THEORETICAL-ANALYSIS; PLASTIC COLLAPSE; BIN-LOADS; FLOW; STRESSES;

D O I：

10.1590/1809-4430-Eng.Agric.v41n6p576-590/2021

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

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 a: 30 degrees hopper. In general, normal pressures were higher for the flat bottom whereas higher frictional pressures occurred for the 30 degrees 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.

引用

页码：576 / 590

页数：15

共 5 条

[1] Measuring pressures in a slender cylindrical silo for storing maize. Filling, static state and discharge with different material flow rates and comparison with Eurocode 1 part 4
Couto, A.
Ruiz, A.
Herraez, L.
Moran, J.
Aguado, P. J.
[J]. COMPUTERS AND ELECTRONICS IN AGRICULTURE, 2013, 96 : 40 - 56
[2] Experimental study of the pressures exerted by wheat stored in slender cylindrical silos, varying the flow rate of material during discharge. Comparison with Eurocode 1 part 4
Couto, A.
Ruiz, A.
Aguado, P. J.
[J]. POWDER TECHNOLOGY, 2013, 237 : 450 - 467
[3] Analysis of dynamic discharge pressures in cylindrical slender silos with a flat bottom or with a hopper: Comparison with Eurocode 1
Vidal, P
Guaita, M
Ayuga, F
[J]. BIOSYSTEMS ENGINEERING, 2005, 91 (03) : 335 - 348
[4] Pressures measurements of maize grain in cylindrical steel silos and comparison with different international standards
Dornelas, Karoline Carvalho
Rodrigues, Hygor Cesar Soares
Gandia, Romulo Marcal
Gomes, Francisco Carlos
do Nascimento, Jose Wallace Barbosa
[J]. JOURNAL OF STORED PRODUCTS RESEARCH, 2024, 108
[5] SILAGE PRESSURES IN TOWER SILOS .3. EXPERIMENTAL-MODEL STUDIES AND COMPARISON WITH SOME SILO THEORIES
NEGI, SC
OGILVIE, JR
NORRIS, ER
[J]. CANADIAN AGRICULTURAL ENGINEERING, 1977, 19 (02): : 107 - 110

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