Calculation of Silo Wall Pressure considering the Intermediate Stress Effect

Shi, Shuyan; Jun-hai, Zhao; Changguang, Zhang

doi:10.1155/2018/3673515

Cited by 8 publications

(7 citation statements)

References 21 publications

(27 reference statements)

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“…The lateral pressure act on wall at different depth was given in fig below: The hermetic shallow bin silo has maximum lateral pressure on the top of bin and it gets reduced when it reaches to the bottom of the bin. (Sun, Zhao et al, 2018) [21,22] , also reported the same that the maximum lateral pressure was on the top of the silo bin.…”

Section: Grain Pressure Calculationmentioning

confidence: 91%

“…The lateral pressure for shallow bin silo can be determined using Airy equation. The Rankine Constant (k) can be determined by (Sun, Zhao et al, 2018) [21,22] , and the constant depends on the angle of internal friction (φ) and the angle of internal friction can be taken as natural angle of repose (Sahay and Singh 1996) [22] . He defined k as (1 − sinφ)(1 + sinφ) −1 .…”

Section: Grain Pressure Calculationmentioning

confidence: 99%

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Design and development of hermetic storage bin for de-hulled Kodo millet

Kuraloviyan¹,

Balakrishnan²,

Rajkumar³

et al. 2020

J Pharmacogn Phytochem

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Hermetic storage is sealed airtight non-chemical based storage system used to preserve the quality of grain, protect from pests, insects, and minimizes the storage losses. A hermetic storage bin was designed with a capacity 200 kg for de-hulled kodo millet. To design the hermetic bin the physical properties of de-hulled kodo millet such as bulk density, true density, porosity, angle of repose and co-efficient of friction were studied. The bulk density, true density, porosity, and angle of repose of de-hulled kodo millet were found to be 685.42 kg/m 3 , 1250 kg/m 3 , 45.16% and 26.1°. The co-efficient of friction of dehulled kodo millet against the mild steel was found to be 0.781. The lateral pressure exerted on the wall surface for was 123.45 kg/m 3 at the height of 0.6m. Pressure decay test was performed to check the air tightness of the hermetic bin. This hermetic bin can advocated to farmers and processors for value addition of small millets.

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Section: Grain Pressure Calculationmentioning

confidence: 91%

Section: Grain Pressure Calculationmentioning

confidence: 99%

Design and development of hermetic storage bin for de-hulled Kodo millet

Kuraloviyan¹,

Balakrishnan²,

Rajkumar³

et al. 2020

J Pharmacogn Phytochem

View full text Add to dashboard Cite

show abstract

“…Apesar da predição das pressões estáticas e dinâmicas constituírem objeto de estudo por vários pesquisadores e muito progresso tenha sido alcançado, ainda não podem ser perfeitamente estimadas (Sun et al, 2018), entretanto, algumas metodologias de cálculos são aceitas por apresentarem boa aproximação, destacando-se as formulações desenvolvidas por Janssen (1985), Reimbert (1943), Jenike e Johanson (1968) e Walker (1966).…”

Section: Pressões Em Silosunclassified

Emprego de inserts em silos metálicos: revisão sobre o padrão de fluxo dos produtos e distribuição das cargas na estrutura

Dornelas

Ayres

Nascimento

2021

RSD

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Os silos verticais são estruturas utilizadas pelas indústrias, setor agrícola e mineral para armazenar e conservar a granel, produtos sólidos granulares ou pulverulentos. Contudo, silos são estruturas que podem apresentar grande número de falhas estruturais e de fluxo, especialmente pela diversidade de variáveis que afetam o comportamento estrutural e a ausência de normas nacionais específicas para o cálculo de ações em silos. Na busca por novas alternativas que favoreçam a produção e reduzam custos sem afetar a qualidade do produto final, destaca-se o uso de inserts por reduzir problemas como descarregamento desuniforme, segregações, obstruções parciais ou totais no fluxo, reduzindo desta maneira possíveis prejuízos produtivos a indústria e problemas na integridade física do silo. Entretanto, a simples adoção de inserts em silos verticais sem um conhecimento prévio de algumas características como forma e dimensões mais apropriadas para cada situação pode não obter o resultado desejado além do fato de gerar problemas no fluxo dos produtos. Diante desta insegurança, a presente revisão teve como objetivo realizar uma abordagem sobre o comportamento de fluxo dos produtos armazenados e das pressões que ocorrem com a presença de inserções no interior da estrutura, apresentando resultados do emprego desses dispositivos em silos verticais, possibilitando a elaboração de projetos seguros, robustos e confiáveis.

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“…Li et al [14] experimentally investigated the stability of the concrete arch under different lateral pressure coefficients. Sun et al [15] derive four wall pressure coefficients in quasiplane strain to consider the intermediate stress effect under four criteria. Tatkoa and Kobielak [16] carry out the laboratory tests in the steel flatbottomed silo model filled with sand.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Model of Underground Shaft Coal Pocket and Deformation of Silo Wall in Coal Mines

Wu¹,

Liu²,

Lv³

et al. 2020

Advances in Civil Engineering

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In order to provide a theoretical basis for the design of underground shaft coal pocket and support parameters in coal mines, a mechanical model and a dynamic analysis of the silo wall are established based on the engineering background of Ganhe Coal Mine. The numerical calculation is carried out by using the new model. The back analysis of the silo wall damage in the actual project is carried out, and the deformation law and fracture mechanism of the silo wall affected by different lateral pressure coefficients are analyzed and studied research. Based on the Mohr–Coulomb strength criterion, five sets of orthogonal simulation experiments were carried out for lateral pressure coefficients of 0.6, 0.8, 1.0, 1.2, and 1.4, respectively. The results show that the lateral pressure coefficient is the main factor affecting the deformation of the silo wall, the radial displacement of the silo wall increases gradually with the increase of the lateral pressure coefficient, and the displacement follows the quadratic polynomial function distribution. The maximum tensile stress area of the silo wall is located in the middle and lower part of the shaft coal pocket, which better explains the engineering phenomenon that the actual fracture location of the silo wall is mostly concentrated in the middle and lower part of the underground shaft coal pocket. The targeted repair technology can be used for reference in engineering.

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Calculation of Silo Wall Pressure considering the Intermediate Stress Effect

Cited by 8 publications

References 21 publications

Design and development of hermetic storage bin for de-hulled Kodo millet

Design and development of hermetic storage bin for de-hulled Kodo millet

Emprego de inserts em silos metálicos: revisão sobre o padrão de fluxo dos produtos e distribuição das cargas na estrutura

Mechanical Model of Underground Shaft Coal Pocket and Deformation of Silo Wall in Coal Mines

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