Relevant bibliographies by topics / Silos

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
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  5. Conference papers
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Academic literature on the topic 'Silos'

Author: Grafiati
Published: 4 June 2021
Last updated: 29 July 2024

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Journal articles on the topic "Silos"

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Makhinko, Anton, Nataliia Makhinko, and Volodymyr Semko. "Creation of design models of silos for grain storage under conditions of non‐axisymmetric actions." ce/papers 6, no. 3-4 (September 2023): 1935–40. http://dx.doi.org/10.1002/cepa.2552.

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AbstractThe article describes the authors' experience creating silos for grain storage models in programs for finite element analysis of building structures. Particular attention is paid to the thin‐walled structures of the silo's vertical walls, considered an orthotropic shell of revolution. The shell is orthotropic because the silo walls are made of sinusoidal corrugated sheets and reinforced with vertical stiffeners. The direct calculation of such shells in finite element analysis programs is associated with great computational difficulties (especially in problems of geometrically nonlinear analysis). Therefore, an alternative method is proposed for creating design models of silos, which allows, without loss of analysis accuracy, to significantly reduce the dimension of models and analysis time, thereby increasing the efficiency of structural analysis. The method is helpful for the analysis silos for non‐axisymmetric loads associated with a moment stress‐strain state in the silo walls. Non‐axisymmetric actions are loads from the filling and discharge of the silos, wind effects and loads from blast waves.
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Chasney, Matthew, and Andria Hickey. "Silos." Afterimage 45, no. 2-3 (September 1, 2017): 64–68. http://dx.doi.org/10.1525/aft.2017.45.2-3.64.

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Adroher, A. Mª, E. Pons i Brun, and J. Ruiz de Arbulo. "El yacimiento de Mas Castellar de Pontós y el comercio del cereal ibérico en la zona de Emporion y Rhode (SS.IV-II a.C.)." Archivo Español de Arqueología 66, no. 167-168 (June 29, 2018): 31. http://dx.doi.org/10.3989/aespa.1993.v66.459.

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Se presentan nuevos hallazgos en el yacimiento que permiten identificar en su última fase (siglos IV-II a. C.) un posible santuario de Deméter y Core rodeado de un campo de silos. Apuntan en este sentido el hallazgo de una estructura de culto incluyendo un altar helenístico en mármol pentélico y un gran depósito votivo localizado en el interior de un silo. Este depósito permite identificar el significado ritual de otros hallazgos anteriores en el interior de silos.
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Alfaro Suescun, Egoitz, Miguel Loza Uriarte, Javier Niso Lorenzo, and Jose Luis Solaun Bustinza. "Iglesias, rentas y sistemas de almacenamiento en el País Vasco durante los siglos X y XI d. C.: el testimonio arqueológico de San Martín de Dulantzi (Alegría-Dulantzi, Álava)." Archivo Español de Arqueología 90 (June 20, 2017): 247. http://dx.doi.org/10.3989/aespa.090.017.011.

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En el presente artículo se analizan los más de 30 silos abiertos durante los siglos X y XI en el interior de la basílica altomedieval de Dulantzi (Alegría-Dulantzi, Álava). El texto pretende alcanzar un doble objetivo. Por un lado, presentar a la comunidad científica este importante conjunto de silos del que hasta el momento sólo se había dado noticia escuetamente. Para ello, se aportarán todos los datos arqueológicos que ha proporcionado el estudio, tanto de los continentes (capacidad, morfología, situación, etc.), como de los contenidos (tipos de rellenos y material localizado en ellos). Por otro, continuar con el debate historiográfico sobre la presencia de silos en iglesias altomedievales. En este sentido, estructuraremos nuestras reflexiones en torno a tres ejes: las razones que explican el elevado número de silos abiertos en Dulantzi; su posible relación con la captación y almacenamiento de rentas eclesiásticas; y, finalmente, su excepcionalidad: ¿fue Dulantzi un caso singular o, por el contrario, su modelo explicativo puede ser extrapolado a otros yacimientos altomedievales del entorno?
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Berg, Shannon, Morris Barer, Sam Sheps, Ying C. MacNab, Margaret McGregor, and Sabrina T. Wong. "Bridging Silos." Home Health Care Management & Practice 27, no. 4 (March 2, 2015): 192–200. http://dx.doi.org/10.1177/1084822315572114.

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Potter, Margaret A., Patricia Sweeney, Clarke Thomas, Theresa M. Miller, and Tyler Gourley. "Connecting Silos." Journal of Public Health Management and Practice 11, Supplement (November 2005): S50—S56. http://dx.doi.org/10.1097/00124784-200511001-00009.

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Rotter, J. Michael. "Metal silos." Progress in Structural Engineering and Materials 1, no. 4 (July 1998): 428–35. http://dx.doi.org/10.1002/pse.2260010412.

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E.A.Maksoud El-Domany, Tarek. "Silos Engineering." International Journal of Advances Engineering and Civil Research 3, no. 1 (June 1, 2023): 67–99. http://dx.doi.org/10.21608/ijaecr.2024.293007.1024.

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Cook, Shelley Barbara, Logan Cochrane, and Jon Corbett. "Searching Through Silos." International Journal of E-Planning Research 9, no. 4 (October 2020): 23–39. http://dx.doi.org/10.4018/ijepr.2020100102.

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As participatory mapping evolves encompassing new technologies and incorporating new terminology to describe varying approaches, it is important to examine whether all practitioners of participatory mapping belong to the same community of practice guided by shared principles. The researchers explore the narrative of participatory mapping as a coherent, unified discipline. They do this by assessing the landscape of the literature on participatory mapping practices across two scholarly search platforms – Google Scholar and Web of Science. In each platform, they searched the same terms that are commonly associated with participatory mapping. The researchers' findings suggest participatory mapping lacks coherence as a unified method. They note a lack of overlap in top cited publications, indicating that what counts as legitimate knowledge regarding participatory mapping and its practice differs depending on the platform. Implications for participatory mapping theory and practice are discussed.
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Dominiczak, Marek H. "Against Medical Silos." Clinical Chemistry 61, no. 12 (December 1, 2015): 1560–61. http://dx.doi.org/10.1373/clinchem.2015.243956.

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Dissertations / Theses on the topic "Silos"

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LOPES, NETO José Pinheiro. "Analise estrutural de silos metálicos prismáticos." Universidade Federal de Campina Grande, 2005. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/1082.

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Capes
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 económica. Neste contexto, as fábricas de produtos agroindustriais, em especial as de ração avícola, tendem a buscar novas alternativas que favoreçam a produção e reduzam custos sem afetar a qualidade do produto final. Entre estas alternativas, destaca-se o uso de silos verticais por facilitar o processo de confecção das rações e eliminar os grandes depósitos horizontais. Entretanto, a simples adoção de 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 pelo dimensionamento inadequado das células armazenadoras. Diante desta insegurança, a presente pesquisa teve como objetivo estudar as tensões desenvolvidas nas paredes em conformação ziguezague de um silo metálico prismático 2m x lm e comparar os resultados obtidos com teorias e estudos semelhantes. Para a caracterização das propriedades de fluxo da soja em pelets (produto utilizado nos ensaios), adotou-se a metodologia proposta pela BMBH. Para o cálculo das pressões, adotaram-se as normas D1N 1055, ISO 11697, EUROCODE 1 e AS 3774 enquanto que, para o cálculo das tensões, utilizaram-se os métodos simplificados de Ravenet e Troitsky. Para a obtenção dos esforços reais nas paredes, utilizou-se extensômetros elétricos e transdutores de deslocamentos. Com bases nos resultados obtidos, ressalta-se que a soja em pelets apresentou característica granular e que o esforço gerado nas paredes pelo seu descarregamento aumentou com o tempo de armazenagem estudado. Com relação às teorias estudadas, 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.
Last years in Brazil have shown an agricultural growth that has forced several sectors to fít in productive patterns to maintain competitiveness within the process of economic globalization. In this context, agroindustrial product factories, particularly the ones involved with rations, tend to search for new alternatives to favor production and reduce costs without affecting the quality of the final product. Among these alternatives there is the use of vertical silos due to their capacity to facilitate the process of rations production and remove the need for great horizontal warehouses. The mere use o f vertical silos without a previous knowledge of some characteristics such as the most appropriate shape and dimensions for each situation, however, may not produce the desired outcome and can create problems with the flow of products due to inadequate dimensioning of storage cells. Aware of such an insecurity, the present research had the objective to study the tensions produced on the zigzag shaped walls of a 2m x l m prismatic metallic silo, and to compare results found with theories and similar studies. The methodology proposed by BMBH was used to determine the flow properties of pelletized soybean (product used in the experiments). DIN 1055, ISO 11697, EUROCODE 1 and AS 3774 norms were used for the calculation of pressure whilst the simplifíed methods of Ravenet and Troitsky were used to calculate tension. Strain gauges and displacement transducers were used to obtain data concerning the real efforts on the walls. Based on results found it can be said that pelletized soybean presented granular characteristic and that the effort generated on the walls due to its unloading increased according to storage time studied. Concerning the theories studied, it was concluded that either Ravenet theory or Troitskys can be recommended for the design of prismatic silos since they present great accuracy when contrasted with experimental values.
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Milorad, Tatomirović. "Dejstva uskladištenog zrnastog materijala na armiranobetonske cilindrične ćelije silosa." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2015. https://www.cris.uns.ac.rs/record.jsf?recordId=94010&source=NDLTD&language=en.

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U radu se analiziraju analitički postupci za određivanjeopterećenja u silosima, prema teorijskim postupcima itehničkoj regulativi. Metoda integralnih relacija jeprimenjena kod formiranja postupaka analize stanja napona usilosima sa pravougaonim ćelijama i silosa sa kružnimćelijama. U analizama je uvedeno granično stanje ravnoteže iasimptotsko stanje napona materijala u silosu. Na primerimaje dato upoređenje rezultata analize stanja napona u silosima,kao i kod analize statičkih uticaja kod kružnih ćelija oddejstva dodatnog lokalnog opterećenja i nesimetričnogopterećenja pri pražnjenju sa velikim ekscentricitetom.
This paper analyzes the analytical procedures for the determination ofloads in silos, according to theoretical procedures and technicalregulations. The method of integral relations was applied for theestablishment of procedures for analyzing the stress state in silos withrectangular cells and silos with circular cells. The analysis isintroduced limit state of equilibrium and asymptotic stress state of thematerial in the silo. The examples given comparison of the results ofthe analysis of stress state in silos, as well as in the analysis of staticforces of circular cells from the effects of patch load and dischargeloads for circular silos with large outlet eccentricities.
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Gomes, Filho Tarc?sio Santiago. "Formula??o e caracteriza??o de comp?sitos ciment?cios leves aplicados a silos prefabricados." PROGRAMA DE P?S-GRADUA??O EM CI?NCIA E ENGENHARIA DE MATERIAIS, 2015. https://repositorio.ufrn.br/jspui/handle/123456789/21473.

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Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES)
Os silos de armazenamento s?o utilizados para estocagem de produtos por um determinado per?odo. Alimentos armazenados n?o podem sofrer varia??es bruscas de temperatura, o que impede a utiliza??o de silos met?licos em regi?es tropicais. Com isso, s?o comumente fabricados em concreto, diminuindo a troca de calor do meio externo com o interior. Diferente do concreto convencional, o concreto leve apresenta massa espec?fica aparente reduzida e bom isolamento t?rmico. O objetivo deste trabalho foi obter formula??es de concreto leve refor?ado com fibras de a?o e polipropileno, pass?veis de aplica??o na fabrica??o de silos para estocagem de gr?os. Foram formulados tra?os contendo fibras de polipropileno e tra?os contendo a fibra polim?rica em conjunto com a fibra de a?o. Para todas as composi??es foram utilizadas as mesmas concentra??es de aditivo plastificante e agregados. O agregado gra?do foi composto por duas gradua??es de argila expandida, a primeira entre 0 e 5 mm (AE-0500) e a segunda com gradua??o entre 6 e 15 mm (AE-1506). O agregado mi?do utilizado foi areia natural com m?dulo de finura de 2,31. O fator ?gua / cimento (FAC) foi mantido em 0,40. Foi poss?vel observar que a adi??o somada de 0,4% fibras de polipropileno e 0,6% fibra de a?o ocasionou redu??es significativas nos valores da porosidade total, ?ndice de vazios e absor??o de ?gua por imers?o, indicando redu??o na permeabilidade do comp?sito e prov?vel aumento na durabilidade. Em contrapartida, o tra?o contendo 0,1% de fibras de polipropileno e 0,9% de fibra de a?o, apresentou maiores valores de resist?ncia ? tra??o e de m?dulo de elasticidade. Todos os tra?os apresentaram resist?ncia acima de 19,2 MPa e massa espec?fica inferior a 1000 kg/m?, caracterizando-os como concretos estruturais leves.
The storage bins are used for storage of products for a certain period. Food stored can not undergo sudden changes in temperature, which prevents the use of metal silos in tropical regions. Thus, they are commonly made of concrete, reducing the heat exchange from the external environment with the interior. Unlike conventional concrete, lightweight concrete has reduced bulk density and good thermal insulation. The aim of this study was to obtain lightweight concrete formulations reinforced with steel and polypropylene fibers could be applied in the manufacture of silos for grain storage. Traces were formulated containing polypropylene fibers and the polymer fibers containing traces together with steel fiber. For all compositions the same concentrations of additive plasticizer and aggregates were used. The coarse aggregate is composed of two grades of expanded clay, the first between 0 and 5 mm (EA-0500) and the second graduation with between 6 and 15 mm (EA-1506). The fine aggregate used was natural sand with fineness modulus of 2.31. The factor water / cement (FAC) was maintained at 0.40. It was observed that the addition plus 0.4% polypropylene fibers and 0.6% steel fiber resulted in significant reductions in the values of total porosity, void ratio and water absorption, indicating a reduction in the permeability of the composite and probable increased durability. In contrast, the dash containing 0.1% of polypropylene fibers and 0.9% of steel fiber showed the highest values of tensile strength and modulus of elasticity. All traits showed resistance above 19.2 MPa and density less than 1000 kg / m?, characterizing them as lightweight structural concrete.
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Scalabrin, Luciano Argenta. "Dimensionamento de silos metálicos para armazenagem de grãos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2008. http://hdl.handle.net/10183/15834.

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Neste trabalho, apresentam-se as formas mais comuns de acidentes em silos buscando explicar as causas que ocasionaram o colapso. Trata-se de analisar a teoria e as recomendações de duas das principais normas para a determinação das pressões devidas aos grãos armazenados no interior do silo. Desenvolvem-se planilhas de cálculo para auxiliar o dimensionamento de um silo. Busca-se maximizar a força de tração admissível para cada espessura de chapa lateral com o intuito de obter silos mais leves e conseqüentemente mais econômicos. Da mesma forma, uma planilha de cálculo é apresentada para maximizar a força de compressão para diferentes espessuras de montantes. Um configurador de silo é apresentado no decorrer do trabalho, tendo como dados de entrada o diâmetro e altura do silo e obtendo as diferentes espessuras de chapa laterais com relação à altura bem como os diferentes montantes. Apresentam-se formas de análise de silos, quando vazios, submetidos à carga de vento e a necessidade de colocação de anéis de reforço na circunferência e sua distribuição na altura. Trata-se de analisar o efeito de silos quando vazios pelo método dos elementos finitos, levando em consideração a rigidez da chapa lateral.
In this work, some accidents in silos are presented and the causes are discussed. The theory and the recommendations of two standards for determination of pressure due to grain stored inside the silo are presented. Sheets for silos design are developed. The goal is to maximize the tension force in the silos lateral sheet for each thickness, in order to improve economical benefits. Similarly, another sheet is developed with the goal to maximize the compression force in the stiffeners for different thicknesses. A design sheet for silos is presented in the course of the work; diameter and height of the silo are the input data and different thicknesses of lateral sheet and stiffeners are output data. Different approach for empty silos considering wind loads are presented and the use of wind-rings are verified. Empty silos are examined by the finite elements method considering lateral rigidity of the lateral sheet.
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Marques, Neto Jose Floriano de Azevedo. "Concepção de um sistema misto em concreto armado e alvenaria estrutural aplicado a silos multicelulares para cafe a granel." [s.n.], 2004. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257732.

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Orientador: Maria Cecilia Amorim Teixeira da Silva
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo
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Resumo: O agronegócio café representa atualmente no mundo a segunda maior commodity e observa-se uma tendência cada vez maior em se trabalhar com esse produto a granel, em grandes volumes. Diversos fatores justificam essa tendência: transporte mais barato e mais seguro em caminhão do tipo container; custo mais barato do container para embarcar nos navios para exportação; diminuição significativa da mão ¿ de ¿ obra de manuseio; maior segurança contra incêndio; maior rapidez na carga e descarga; e eliminação de gastos com valores não agregados ao produto. Visando uma concepção construtiva racional e econômica, o presente trabalho propõe um sistema de armazenagem para café a granel, na forma alternativa aos sistemas tradicionais, quer seja de armazenagem do café em sacos de 60kg, ou mesmo em sacos tipo big-bags, com capacidade individual de 900kg a 1200kg. No projeto proposto, o silo é composto de células em alvenaria estrutural, geminadas duas a duas na largura e com um número variável de células no comprimento, em função do volume desejado de armazenagem. Esse sistema simétrico favorece a racionalidade operacional, garantindo a continuidade entre os fluxos de recebimento e de expedição. O fundo da célula é em forma de tremonha dupla tronco-piramidal, com saída central. Essa alternativa permite a redução da altura da tremonha para uma mesma célula, e conseqüentemente uma redução na altura total do silo, facilitando a concepção estrutural e minimizando o custo da obra. As tremonhas são construídas em painéis treliçados pré-moldados com capeamento de concreto. A sustentação das células e das tremonhas é feita através de vigas e pilares de concreto armado. O isolamento térmico necessário para que a qualidade do café armazenado seja garantida é estabelecido pela utilização de telhas trapezoidais de aço galvanizado, tanto na cobertura como nos fechamentos laterais. A parte superior das células do silo recebe uma laje que tem como função estrutural o travamento da estrutura. Tendo em vista situações de silos multicelulares, as várias situações de carregamento, resultantes das combinações de células cheias e vazias, são analisadas. As especificações e as peculiaridades relativas ao produto armazenado são apresentadas e consideradas na definição do sistema proposto. Para um exemplo de silo adotado, são calculados todos os esforços provenientes das ações que agem nas paredes e nas tremonhas, e também seu dimensionamento, concluindo-se pela viabilidade da concepção construtiva estudada
Abstract: Nowadays, coffee agribusiness represents the second largest commodity in the world. Storing coffee beans in silos, instead of in bags or big-bags, has been an increase tendency. Several factors justify that tendency: cheaper and safer transport by container trucks, lower cost of containers for export shipment, less labor in handling, greater safety against fire, faster filling and discharge, and elimination of extra expenses due to values not aggregated to the product. Aiming at an economic and rational solution for storing coffee beans this paper presents an alternative design: a multi-cell silo group composed of reinforced masonry rectangular cells coupled two by two in width, and a variable number of cells in length according to the volume of desired storage. Such symmetrical system benefits the loading and the unloading operations, and guarantees the continuity between the receipt flow and the shipment flow. The silo bottom is designed as a double pyramidal central opening hopper. That shape reduces the height of the hopper in the cell, and consequently reduces the total height of the silo lowering the cost of the building. The hoppers are built in precast-concrete trussed panels. Cells and hoppers are supported on concrete beams and columns. The thermal insulation needed to preserve the quality of the stored coffee beans is obtained by using galvanized steel trapezoid tiles for the roof as well as for the lateral closure. The roof structure consists of a precast-concrete slab that restrains the silo structure. Several combinations of loaded and unloaded cells are analyzed in the multi-cell silo group to compute the worst combinations of loading. An example is presented and the feasibility of the alternative design is discussed.
Mestrado
Edificações
Mestre em Engenharia Civil
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Lahlouh, El-hachemi. "Compressive membrane action in concrete silos." Thesis, University of Bristol, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280887.

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O'Neill, James Christopher. "Stress distributions in silos and hoppers." Thesis, Teesside University, 2013. http://hdl.handle.net/10149/315542.

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This thesis provides a report on the numerical analysis of stress distributions within granular materials held in silos and hoppers. Stress distributions within granular materials stored in silos and hoppers have been the subject of research for over 100 years, work starting in this field in 1895 (Janssen). Knowledge of stress distributions within the granular materials contained is essential to allow structural design of the silo and hopper shell and attachments, and to allow estimation of likelihood and location of cohesive arch formation. National design codes for silos and hoppers (including BS EN 1993-4-1:2007 Eurocode 3 and DIN 1055-6:2005-03) are based on approximate techniques that assume vertical and horizontal directions of principal stresses, with constant horizontal stress across the silos. According to the knowledge of the author there are no industrial standards that allow calculation of loading on inserts within hoppers. The objective of the research project is to develop algorithms to predict stresses in hoppers and silos using principal stress arc geometry methods, and implementation of these methods in various silo and hopper configurations including those with inserts for the purposes of aiding flow. The research project algorithms are spreadsheet- and QB64 platform-based, and are able to produce stress distributions within silos and hoppers. This is achieved by extension of the principal stress arc method of analysis. The new algorithms allow prediction of common flow problems and provide new information on structural loading of silos and hoppers, including inserts used to promote flow. The research project models allow estimation of azimuthal stresses within three-dimensional case studies.
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Zhang, Kefeng. "Flow of particulate solids in silos." Thesis, University of Edinburgh, 1997. http://hdl.handle.net/1842/13254.

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The experimental study was conducted to explore the flow behaviour of particulate solids in silos and to provide the experimental data for the theoretical work. Silo discharge tests using polypropylene pellets in a half cylindrical model silo were conducted under different discharge eccentricities. In addition, some experimental data from a research project on a full scale silo at the University of Edinburgh were also analysed and used in this thesis. In these tests, the main observations relating to flow were the residence times of the markers seeded in the solid during filling (residence time is the time a particle takes to move from its initial position to the outlet). The top surface profile was also measured at regular intervals during discharge. The residence time measurements are analysed using several approaches to infer the approximate location of the flow channel boundary in both silos. These techniques demonstrate how residence time measurements can be used to infer the flow patterns in silo discharge. In addition to the above, the transparent front wall in the half cylindrical model silo enabled a record to be made of the development of the flow channel boundary and the trajectories of individual particles. This data provided further insight into the complex flow patterns. The direct measurements of the changing flow channel boundary are also used in the thesis to evaluate the dilation of the solid which occurred in the flowing material. The dilation, or decrease in the bulk density, is believed to play a significant role in determining the solids flow pattern. The theoretical work presented starts with the development of a simple engineering model to predict solids flow in funnel flow silos. This model uses the kinematic theory for steady state flow, subject to simple assumptions concerning the top surface profile, top surface flow geometry and particle trajectory. The flow of iron ore pellets in the full scale silo and polypropylene pellets in the model silo during concentric emptying are predicted using the simple engineering model. The predictions for both silos are plausible and are in good agreement with the experimental observations.
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Watson, Graham Redpath. "Flow patterns in flat-bottomed silos." Thesis, University of Edinburgh, 1993. http://hdl.handle.net/1842/14649.

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The work in this thesis is directed towards the measurement and prediction of the shape of the flow channel in granular solids as they discharge from flat-bottomed silos. It is widely believed that the flow pattern affects the pressure distribution against the walls and so also the stresses in the silo structure. Thus, a reliable means of predicting the shape of the flow channel has important design implications. Kinematic analysis is used as the basis for the theoretical work. The governing partial differential equation contains one unknown empirical parameter: the kinematic parameter. Finite element formulations are developed and implemented to solve for the steady-state vertical velocity field in flowing granular solids for a range of conjectured kinematic parameters. The formulations are applied to the analysis of flow from flat-bottomed silos with planar or axisymmetric geometries. Criteria are proposed to define the boundary between flowing and near-stationary solid. The flexibility of the finite element method allows many original kinematic analyses to be carried out e.g the analysis of silos with more than one outlet; the analysis of planar silos with eccentrically-positioned orifices; the analysis of the effect of a spatially-varying kinematic parameter and the modelling of the top surface displacement are all claimed to be original. Experiments are carried out in a half-cylindrical flat-bottomed silo. A rigid transparent sheet is used to form the front wall. The bisection of the flow in this way allows direct observation of flow mechanics to be made and the shape of the flow channel boundary can also be traced. Two solids are tested: a rough, frictional solid (sand) and a smooth, free-flowing solid (polypropylene pellets).
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Texereau, Jacques. "Optimisation des silos en beton arme." Poitiers, 1987. http://www.theses.fr/1987POIT2279.

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Apres une partie de calcul d'une section en beton arme en flexion composee aux etats ultimes et de service, avec etude de cas concrets par elements finis, developpement d'un outil cao sur micro-ordinateur pour optimiser les cellules circulaires et hexagonales (application a l'etude d'une capacite de 6000 tonnes a saint-varent dans les deux-sevres)
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Books on the topic "Silos"

1

Brown, C. J., and J. Nielsen, eds. Silos. Abingdon, UK: Taylor & Francis, 1998. http://dx.doi.org/10.4324/9780203223512.

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M, Reimbert André, ed. Silos, theory and practice: Vertical silos, horizontal silos (retaining walls). 2nd ed. New York, N.Y., USA: Lavoisier Pub., 1987.

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Rive, H. The construction of silos. Victoria, B.C: W.H. Cullin, 1997.

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Palomar, César-Javier Palacios. Tesoros de Silos: Catálogo artístico del Monasterio de Santo Domingo de Silos : siglos XVI al XIX. [Valladolid]: Junta de Castilla y León, 2006.

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Newton, William. Silos and silage. Victoria, B.C: W.H. Cullin, 1997.

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Leistner, Frank, ed. Connecting Organizational Silos. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781119205258.

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Castrillo, Juan. Amanéceme, Silos, amanéceme. Madrid: SIAL Ediciones, 2013.

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-Ing, Martens Peter Dr, and Franken Helmuth, eds. Silo-Handbuch. Berlin: Ernst, 1988.

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Board, British Materials Handling, and British Standards Institution, eds. Silos: Draft design code for silos, bins, bunkers and hoppers. Milton Keynes: British Standards Institution in association with the British Materials Handling Board, 1987.

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García, Eugenia Ma Sacristán. Silos: Pasado y futuro. Valladolid [Spain]: Castilla Ediciones, 1995.

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Book chapters on the topic "Silos"

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Ehmann, Stefan, Karl Morgen, and Cornelius Ruckenbrod. "Silos." In Beton-Kalender 2016, 741–832. Berlin, Germany: Wilhelm Ernst & Sohn, Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, 2016. http://dx.doi.org/10.1002/9783433603413.ch7.

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Lindgaard, Gitte. "Deconstructing Silos." In IFIP Advances in Information and Communication Technology, 3–20. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/978-0-387-35610-5_1.

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Abendshien, John. "Silos, Everywhere." In Health Care in the Next Curve, 55–69. Boca Raton : Taylor & Francis, 2018.: Productivity Press, 2018. http://dx.doi.org/10.1201/b22057-5.

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Berg, Christian. "Structural silos." In Sustainable Action, 180–90. Milton Park, Abingdon, Oxon ; New York, NY : Routledge, 2020. | Series: Routledge studies in sustainability: Routledge, 2019. http://dx.doi.org/10.4324/9780429060786-12.

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Hawkins, David E. "Corporate silos." In The Bending Moment, 12–19. London: Palgrave Macmillan UK, 2005. http://dx.doi.org/10.1057/9780230510609_2.

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"Silos." In The Order in Which We Do Things, 25–26. Wilfrid Laurier Press, 2014. http://dx.doi.org/10.51644/9781554589968-015.

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"Flow in silos." In Silos, 129–216. CRC Press, 1998. http://dx.doi.org/10.1201/9781482271744-10.

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"Discharge, feeding and metering equipment." In Silos, 217–67. CRC Press, 1998. http://dx.doi.org/10.1201/9781482271744-11.

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"Silo fabricator’s and system supplier’s view." In Silos, 268–72. CRC Press, 1998. http://dx.doi.org/10.1201/9781482271744-12.

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"Summary." In Silos, 273–76. CRC Press, 1998. http://dx.doi.org/10.1201/9781482271744-13.

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Conference papers on the topic "Silos"

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Foote, Tudor, and Ramesh Agarwal. "Power Generation From Wind Turbines in a Solar Chimney." In ASME 2011 5th International Conference on Energy Sustainability. ASMEDC, 2011. http://dx.doi.org/10.1115/es2011-54085.

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In past several years, several studies have shown that the shrouded wind turbines can generate greater power compared to bare turbines. A solar chimney not only generates an upward draft of the wind inside the solar tower but also creates a shroud around the wind turbine. There is large number of empty silos on farms, especially in mid-western U.S. They can be used as a solar chimney with minor modifications at very modest cost. The objective of this study is to determine the potential of these silos/chimneys in generating wind-power by installing a wind turbine inside the silo. An analytical/computational study is performed to evaluate this potential by employing the well known commercial Computational Fluid Dynamics (CFD) software FLUENT. An actuator disc model is used to model the turbine. Calculations are performed for three cases using the dimensions of a typical silo and assuming Class 3 wind velocity: (a) bare turbine (without enclosing silo), (b) turbine enclosed by a cylindrical silo, and (c) the turbine enclosed by the cylindrical silo with a diffuser at the top of the silo. The incompressible Navier-Stokes equations with Boussinesq approximation and a two equation realizable k–ε model are employed in the calculations. Cp and generated power are calculated for the three cases. It was found that the silo increases the Cp beyond the Betz’s limit significantly and as a result the generated power; this effect is consistent with that found in the recent literature that the shrouded wind-turbines can generate greater power than the bare turbines. The inclusion of a diffuser on top of the silo further increases the generated power and Cp. The results reported here are for typical silo dimensions and wind speeds; the results for silos with different dimensions and wind speeds can be easily generated. This study shows the potential of using abandoned silos in mid-west for wind power generation.
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Dakov, Dimitar, Vasil Georgiev, and Raina Boiadjieva. "Failures of Steel Silos for Grain Storage - Fortuity or Underestimated Risk." In IABSE Congress, Nanjing 2022: Bridges and Structures: Connection, Integration and Harmonisation. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2022. http://dx.doi.org/10.2749/nanjing.2022.1617.

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<p>The paper describes and investigates several cases of failures of silos made from corrugated thin steel sheets which were delivered and assembled in Bulgaria by foreign companies</p><p>Two main patterns of failures which occurred in different times of the year and at different locations in Bulgaria have been analyzed. The first failure pattern is related to collapses of conical roofs made from profiled trapezoidal steel sheetings while the second pattern involves fracture of cylindrical corrugated silo walls. On-site visual investigation of the failed silos and numerical analyses simulating the loading and stress state at the pre-failure situations have been performed.</p><p>Based on the lessons drawn from the investigated silo failures recommendations for improved structural design of the corrugated steel silos are proposed with the aim to avoid similar failure situations in the future.</p>
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Raptopoulos, Sotos. "Design & Post Tensioning Application of Cement Silos." In IABSE Conference, Kuala Lumpur 2018: Engineering the Developing World. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2018. http://dx.doi.org/10.2749/kualalumpur.2018.0998.

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<p>The design &amp; erection of two (2) cement silos for a cement grinding plant is a demanding study requiring engineering competence and high level of efficiency and maintainability. Optimal operating conditions must foresee from the design stage assuring a high quality and a silo-safe cement.</p>
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Ema, Arisa, Hirotaka Osawa, Hiromitsu Hattori, Naonori Akiya, Nobutsugu Kanzaki, Ryutaro Ichise, Minao Kukita, et al. "Breaking Down Silos." In CHI '17: CHI Conference on Human Factors in Computing Systems. New York, NY, USA: ACM, 2017. http://dx.doi.org/10.1145/3027063.3052757.

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Leung, Victor C. M., Terrence Wong, and Peyman TalebiFard. "Breaking the silos." In the 11th international symposium. New York, New York, USA: ACM Press, 2008. http://dx.doi.org/10.1145/1454503.1454506.

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Vakhonina, L., and V. Mardziavko. "Bactericidal treatment of elevator silos by ozonation method." In international scientific-practical conference. MYKOLAYIV NATIONAL AGRARIAN UNIVERSITY, 2024. http://dx.doi.org/10.31521/978-617-7149-78-0-6.

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This study examines the possible development of an electrotechnological system for the bactericidal treatment of elevator silos using ozone. Modern equipment was analyzed and it was established that an effective method is the use of a system of electrodes in the form of a series of rods with flat needles, which ensures effective generation of ozone in the silo elevator
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Kim, Young-Ki, Kwang-Hoon Koh, Sang-Sun Lee, Gi-Won Choi, Byung-Sik Lee, Heon-Woo Kwon, Hyeong-Nam Lee, Jun-Sang Yoo, and Bok-Ok Park. "The Korean Final Repository for Low- and Intermediate-Level Radioactive Waste." In The 11th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2007. http://dx.doi.org/10.1115/icem2007-7130.

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The underground waste repository site is located at Gyeongju and is selected for the disposal of all the Low- and Intermediate-Level Radioactive Waste (LILW). Its operation is scheduled in the beginning of 2009. The repository, with a disposal capacity of 800,000 drums, will be constructed in granite bedrock near the seashore at the Gyeongju site. The repository will be constructed in phases to reach its final capacity of 800,000 drums. In the first phase of construction, the repository will have a capacity to dispose of 100,000 drums. The first phase of the repository design consists of an access shaft, a construction tunnel, an operating tunnel, an unloading tunnel, and six (6) silos. The silos are located at 80 to 130 meters below Mean Sea Level (MSL), in bedrock. Each silo is 24.8m in diameter and 52.4m in height. The silo will be reinforced with shotcrete, rockbolts and concrete lining for rock supports, and the lining will also act as an engineered barrier to limit radioactive nuclide release after closure. After serving its intended function the repository will be backfilled and sealed. The primary objective of backfilling and sealing is to prevent ground-water flow into the silos through the tunnel system and to prevent inadvertent intrusion into the repository after closure.
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Moazed, Reza, and Reza Fotouhi. "Vibration Analysis of Large Silos: Modeling and Experiments." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-72611.

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During the discharge of large cylindrical silos, significant vibrations, pulsations and quaking are often created. The vibrations are typically accompanied by acoustical emissions referred to as silo honking. Such noise pollution is a health and safety concern for workers at site (e.g., hearing loss due to prolonged exposure). From a structural integrity standpoint, the vibrations contribute to the fatigue failure of the load carrying members and connections and endanger the safety and integrity of the overall system. The associated forces and deflections are often further amplified due to resonance between the silo support structure and the discharge loading frequencies. In order to avoid exciting one of the silo support structure modes, researchers and engineers often employ simplified mass-spring models to predict the natural frequencies of the structure. However, these models do not always capture all of the important modes of the silo system. In this paper, a detailed finite element model is developed to predict all of the dominant modes (vertical and side-way swaying) of the system. Beam, shell, and solid elements are used to model the silo support structure, silo walls, and the potash mass, respectively. For the experimental study, several strain gauges and accelerometers were installed on a full-scale silo support structure to determine the frequency of loading during material discharge. This paper summarizes the results of the numerical and experimental study that has been performed.
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S, Anoop, Abhishek R, and Siddeswara Prasad V. "Volume Measurement For Silos." In 2021 IEEE International Conference on Electronics, Computing and Communication Technologies (CONECCT). IEEE, 2021. http://dx.doi.org/10.1109/conecct52877.2021.9622351.

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Müller, Kristina, and Freimut Bodendorf. "Cross-silo federated learning in enterprise networks with cooperative and competing actors." In 14th International Conference on Applied Human Factors and Ergonomics (AHFE 2023). AHFE International, 2023. http://dx.doi.org/10.54941/ahfe1003126.

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The performance and generalizability of AI-based enterprise applications depends on the quantity, quality, and diversity of training data. However, data usually exists in the form of data silos at individual sites. With cross-silo federated learning knowledge extracted from data silos that are distributed across multiple enterprises can be combined to improve the predictive performance of AI models without sharing and centralizing potentially sensitive raw data. The decentralized learning approach thus offers new privacy-preserving opportunities for cross-company collaboration, knowledge management, and the development of intelligent applications and services in federated enterprise networks. Since federated learning enables collaboration between both cooperating and competing companies, this literature review of application-based papers analyzes the differences in the design and strategic management of federated enterprise networks as a function of the actors' relationships.
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Reports on the topic "Silos"

1

Williams, Sarah. Silos and Systems. Auckland University of Technology, November 2023. http://dx.doi.org/10.24135/10292/16947.

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Executive Summary Education and health are interrelated. Education is positively associated with health behaviours, life expectancy, and morbidity and is an established social determinant of health. However, for learning to occur, children must be healthy, ready, and able. All too frequently, ill-health compromises learning and school attendance, leading to long-term negative consequences throughout life. Positioning health services alongside schools, and upholding collaborative intersectoral working, has positively impacted education and health outcomes for children and young people internationally. In New Zealand, however, the education and health sectors work in silo with no formal directive to do otherwise. Achieving and maintaining inter-sectoral collaboration is therefore challenging, piecemeal, and time-consuming. It is further complicated by system structure, competing priorities, and differing perspectives of the two sectors and those working within them. This multicase study of three urban primary schools explored the relationship between school staff and health services and the influences on this relationship. The study focused on the experiences and perspectives of participant principals, teachers, teacher aides, administrative staff, and Special Educational Needs Co-ordinators (SENCO) working with health services. Data were collected through semi-structured interviews, observations, and reviews of staff professional development and other related learning opportunities. The findings highlighted the uncoordinated working relationship between the health and education sectors in New Zealand and the current barriers to achieving workable, inter-sectoral collaboration. This study has confirmed the need for better inter-sector alignment while acknowledging the interdependence of both sectors. Collaborative inter-sectoral work between education and health is critical. The findings from this study recommend developing and implementing a national policy enabling these sectors to work together to achieve optimal education and health outcomes for children and young people in New Zealand.
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Wijayani, Lisa. Silos holding back the energy transition. Edited by Charis Palmer. Monash University, November 2022. http://dx.doi.org/10.54377/84b9-53db.

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Vandercasteelen, Joachim, and Luc Christiaensen. Breaking down silos: On post-harvest loss interventions in Tanzania. Washington, DC: International Food Policy Research Institute, 2020. http://dx.doi.org/10.2499/p15738coll2.134355.

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Peucker, Mario. Gates, Fauci and the NWO: inside Australia’s far-right silos. Edited by Andrew Jaspan and Reece Hooker. Monash University, February 2022. http://dx.doi.org/10.54377/e8c5-c445.

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Peucker, Mario. Gates, Fauci and the NWO: inside Australia’s far-right silos. Edited by Andrew Jaspan and Reece Hooker. Monash University, January 2023. http://dx.doi.org/10.54377/c47d-b36f.

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Mullen, O. Dennis, and Fadel F. Erian. Fernald Silos 1 & 2 Accelerated Waste Retrieval Program Surrogate Development. Office of Scientific and Technical Information (OSTI), September 2002. http://dx.doi.org/10.2172/901479.

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Reinhardt, Sarah. From Silos to Systems: Investing in Sustainable Nutrition Science for a Healthy Future. Union of Concerned Scientists, September 2021. http://dx.doi.org/10.47923/2021.14270.

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Diet-related disease, climate change, and environmental degradation exact an enormous toll on human and planetary health. These challenges could be addressed in part by shifting what we eat and how we produce food, yet key questions remain about how to make such transitions effective, equitable, and sustainable. To help answer these questions, investments in “sustainable nutrition science”—research and education at the intersection of nutrition, food production, and climate and environment—are urgently needed. However, the Union of Concerned Scientists has found that US public funding for sustainable nutrition science is severely limited, totaling an estimated $16 million annually between 2016 and 2019, and recommends more than tripling that amount in response to our devastating public health and environmental crises.
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Fierro, Gabe, Paul Raftery, Carlos Duarte Roa, Marco Pritoni, Michael Wetter, Anand Prakash, Lazlo Paul, Erik Paulson, and Therese Peffer. Skewering the silos: using Brick to enable portable analytics, modeling and controls in buildings. Office of Scientific and Technical Information (OSTI), January 2023. http://dx.doi.org/10.2172/2229614.

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Burks, B. L., F. W. DePiero, M. A. Dinkins, J. C. Rowe, C. B. Selleck, and D. L. Jacoboski. Waste-surface mapping of the Fernald K-65 silos using a structured light measurement system. Office of Scientific and Technical Information (OSTI), October 1992. http://dx.doi.org/10.2172/10103256.

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Burks, B. L., F. W. DePiero, M. A. Dinkins, J. C. Rowe, C. B. Selleck, and D. L. Jacoboski. Waste-surface mapping of the Fernald K-65 silos using a structured light measurement system. Office of Scientific and Technical Information (OSTI), October 1992. http://dx.doi.org/10.2172/6755754.

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