Modelagem da compactação por tráfego agrícola após o preparo do solo em tabuleiro costeiro
Autor(a) principal: | |
---|---|
Data de Publicação: | 2021 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UFRPE |
Texto Completo: | http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/9112 |
Resumo: | The passage of traffic after conventional soil preparation causes negative effects throughout the sugarcane production cycle. To understand this process of transmission of tensions from vehicles to the ground and its consequences on soil compaction, simulation models are used. Among them we have the pseudo-analytical models, derived from Fröhlich and Boussinesq, and the numerical models such as the finite element method (FEM). The aim of this study was to i) perform pseudo-analytical analyzes using different Fröhlich concentration factors (3, 4, 5 or 6) and compare the vertical stress results with two-dimensional (2D) and three-dimensional (3D) FEM models; and ii) simulate a truck and a tractor by the FEM (3D) and analyze the soil properties that change after the vehicles pass. In the first chapter, for the FEM simulations, all the parameters required by the Modified Cam Clay model were determined and the geometry of the soil profile was generated, with the stratification of five types of materials in a finite element mesh generator. For the pseudo-analytical model, the Soilflex model was used, in both tire/ground contact areas were simulated by the super-ellipse model. Results revealed that 3D numerical and pseudo-analytical models showed similarities to each other for vertical stress propagation. The 2D plane strain analysis overestimated the stress propagation, inducing the overlapping of bulbs between tires of the same axle, concentrating and propagating the vertical stress in soil depths far beyond what was observed for the others. The results recommend assigning a concentration factor of 3 for pseudo-analytical simulations. For the second chapter, the passage of a tractor and a sugarcane truck was simulated in a soil, after conventional preparation. With the parameters required by the Modified Cam Clay model, the geometry of the soil profile was generated, similar to the first chapter. The tractor applied the lowest vertical stresses in the tire-soil interaction and along the profile, while the truck tires reached stresses of 750 and 880 kPa on the soil surface, corresponding to the front and rear axles, respectively. The highest preconsolidation stress obtained after vehicle simulation was found in truck traffic, exclusively in the first layer (0.0-0.20). Below the wheels of all vehicles there was a reduction in porosity. |
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ROLIM, Mário MonteiroSIMÕES NETO, Djalma EusébioGOMES, Igor FernandesLIMA, Renato PaivaLINS, Cecília Maria Mota Silvahttp://lattes.cnpq.br/0241880242719794SILVA, Raguiára Primo da2023-06-21T20:20:31Z2021-08-18SILVA, Raguiára Primo da. Modelagem da compactação por tráfego agrícola após o preparo do solo em tabuleiro costeiro. 2021. 93 f. Tese (Programa de Pós-Graduação em Engenharia Agrícola) - Universidade Federal Rural de Pernambuco, Recife.http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/9112The passage of traffic after conventional soil preparation causes negative effects throughout the sugarcane production cycle. To understand this process of transmission of tensions from vehicles to the ground and its consequences on soil compaction, simulation models are used. Among them we have the pseudo-analytical models, derived from Fröhlich and Boussinesq, and the numerical models such as the finite element method (FEM). The aim of this study was to i) perform pseudo-analytical analyzes using different Fröhlich concentration factors (3, 4, 5 or 6) and compare the vertical stress results with two-dimensional (2D) and three-dimensional (3D) FEM models; and ii) simulate a truck and a tractor by the FEM (3D) and analyze the soil properties that change after the vehicles pass. In the first chapter, for the FEM simulations, all the parameters required by the Modified Cam Clay model were determined and the geometry of the soil profile was generated, with the stratification of five types of materials in a finite element mesh generator. For the pseudo-analytical model, the Soilflex model was used, in both tire/ground contact areas were simulated by the super-ellipse model. Results revealed that 3D numerical and pseudo-analytical models showed similarities to each other for vertical stress propagation. The 2D plane strain analysis overestimated the stress propagation, inducing the overlapping of bulbs between tires of the same axle, concentrating and propagating the vertical stress in soil depths far beyond what was observed for the others. The results recommend assigning a concentration factor of 3 for pseudo-analytical simulations. For the second chapter, the passage of a tractor and a sugarcane truck was simulated in a soil, after conventional preparation. With the parameters required by the Modified Cam Clay model, the geometry of the soil profile was generated, similar to the first chapter. The tractor applied the lowest vertical stresses in the tire-soil interaction and along the profile, while the truck tires reached stresses of 750 and 880 kPa on the soil surface, corresponding to the front and rear axles, respectively. The highest preconsolidation stress obtained after vehicle simulation was found in truck traffic, exclusively in the first layer (0.0-0.20). Below the wheels of all vehicles there was a reduction in porosity.A passagem do tráfego após o preparo convencional do solo causa efeitos negativos por todo o ciclo produtivo da cultura da cana-de-açúcar. Para entender este processo de transmissão de tensões dos veículos para o solo e suas consequências na compactação do solo, faz-se o uso dos modelos de simulação. Dentre eles temos os modelos pseudoanalíticos, derivados de Fröhlich e Boussinesq, e os numéricos como o método dos elementos finitos (MEF). O objetivo deste estudo foi: i) realizar análises pseudoanalíticas usando diferentes fatores de concentrações de Fröhlich (3, 4, 5 ou 6) e comparar os resultados de tensão vertical com modelos bidimensional (2D) e tridimensional (3D) em MEF; e ii) simular um caminhão e um trator pelo MEF (3D) e analisar as propriedades do solo que se alteram após a passagem dos veículos. No primeiro capítulo, para as simulações em MEF foram determinados todos os parâmetros requeridos pelo modelo Cam Clay Modificado bem como foi gerada a geometria do perfil de solo, com a estratificação de cinco tipos de materiais num gerador de malha de elementos finitos. Para o modelo pseudoanalítico foi utilizado o modelo Soilflex, em ambos as áreas de contato pneu/solo foram simuladas pelo modelo da super-elipse. Resultados revelaram que os modelos pseudoanalíticos e numéricos 3D mostraram semelhanças entre si para a propagação de tensão vertical. A análise de deformação plana 2D superestimou a propagação de tensão, induzindo a sobreposição de bulbos entre pneus de um mesmo eixo, concentrando e propagando a tensão vertical em profundidades do solo muito além do que foi observado para os demais. Os resultados recomendam atribuir um fator de concentração de 3 para simulações pseudoanalíticas. Para o segundo capítulo, foi simulada a passagem de um trator e um caminhão canavieiro em um solo, após preparo convencional. Com os parâmetros requeridos pelo modelo Cam Clay Modificado foi gerada a geometria do perfil de solo, semelhante ao primeiro capítulo. O trator foi o que aplicou as menores tensões verticais na interação pneu-solo e ao longo do perfil, enquanto os pneus do caminhão atingiram tensões de 750 e 880 kPa na superfície do solo, correspondendo ao eixo dianteiro e traseiro, respectivamente. A maior tensão de pré-consolidação obtida após a simulação dos veículos foi encontrada no tráfego do caminhão, exclusivamente na primeira camada (0,0-0,20). Abaixo das rodas de todos os veículos houve redução da porosidade.Submitted by (ana.araujo@ufrpe.br) on 2023-06-21T20:20:31Z No. of bitstreams: 1 Raguiara Primo da Silva.pdf: 2617014 bytes, checksum: 4246dfad2709c4d72f7418e1b3fdb4d2 (MD5)Made available in DSpace on 2023-06-21T20:20:31Z (GMT). No. of bitstreams: 1 Raguiara Primo da Silva.pdf: 2617014 bytes, checksum: 4246dfad2709c4d72f7418e1b3fdb4d2 (MD5) Previous issue date: 2021-08-18application/pdfporUniversidade Federal Rural de PernambucoPrograma de Pós-Graduação em Engenharia AgrícolaUFRPEBrasilDepartamento de Engenharia AgrícolaCana-de-açúcarCompactação do soloTráfego de máquinaMétodo dos elementos finitosCIENCIAS AGRARIAS::ENGENHARIA AGRICOLAModelagem da compactação por tráfego agrícola após o preparo do solo em tabuleiro costeiroinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesis-5347692450416052129600600600-28621161963550796749185445721588761555info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UFRPEinstname:Universidade Federal Rural de Pernambuco (UFRPE)instacron:UFRPEORIGINALRaguiara Primo da Silva.pdfRaguiara Primo da Silva.pdfapplication/pdf2617014http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/9112/2/Raguiara+Primo+da+Silva.pdf4246dfad2709c4d72f7418e1b3fdb4d2MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-82165http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/9112/1/license.txtbd3efa91386c1718a7f26a329fdcb468MD51tede2/91122023-06-21 17:20:31.967oai:tede2: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Biblioteca Digital de Teses e Dissertaçõeshttp://www.tede2.ufrpe.br:8080/tede/PUBhttp://www.tede2.ufrpe.br:8080/oai/requestbdtd@ufrpe.br ||bdtd@ufrpe.bropendoar:2024-05-28T12:37:51.014335Biblioteca Digital de Teses e Dissertações da UFRPE - Universidade Federal Rural de Pernambuco (UFRPE)false |
dc.title.por.fl_str_mv |
Modelagem da compactação por tráfego agrícola após o preparo do solo em tabuleiro costeiro |
title |
Modelagem da compactação por tráfego agrícola após o preparo do solo em tabuleiro costeiro |
spellingShingle |
Modelagem da compactação por tráfego agrícola após o preparo do solo em tabuleiro costeiro SILVA, Raguiára Primo da Cana-de-açúcar Compactação do solo Tráfego de máquina Método dos elementos finitos CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA |
title_short |
Modelagem da compactação por tráfego agrícola após o preparo do solo em tabuleiro costeiro |
title_full |
Modelagem da compactação por tráfego agrícola após o preparo do solo em tabuleiro costeiro |
title_fullStr |
Modelagem da compactação por tráfego agrícola após o preparo do solo em tabuleiro costeiro |
title_full_unstemmed |
Modelagem da compactação por tráfego agrícola após o preparo do solo em tabuleiro costeiro |
title_sort |
Modelagem da compactação por tráfego agrícola após o preparo do solo em tabuleiro costeiro |
author |
SILVA, Raguiára Primo da |
author_facet |
SILVA, Raguiára Primo da |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
ROLIM, Mário Monteiro |
dc.contributor.advisor-co1.fl_str_mv |
SIMÕES NETO, Djalma Eusébio |
dc.contributor.advisor-co2.fl_str_mv |
GOMES, Igor Fernandes |
dc.contributor.referee1.fl_str_mv |
LIMA, Renato Paiva |
dc.contributor.referee2.fl_str_mv |
LINS, Cecília Maria Mota Silva |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/0241880242719794 |
dc.contributor.author.fl_str_mv |
SILVA, Raguiára Primo da |
contributor_str_mv |
ROLIM, Mário Monteiro SIMÕES NETO, Djalma Eusébio GOMES, Igor Fernandes LIMA, Renato Paiva LINS, Cecília Maria Mota Silva |
dc.subject.por.fl_str_mv |
Cana-de-açúcar Compactação do solo Tráfego de máquina Método dos elementos finitos |
topic |
Cana-de-açúcar Compactação do solo Tráfego de máquina Método dos elementos finitos CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA |
dc.subject.cnpq.fl_str_mv |
CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA |
description |
The passage of traffic after conventional soil preparation causes negative effects throughout the sugarcane production cycle. To understand this process of transmission of tensions from vehicles to the ground and its consequences on soil compaction, simulation models are used. Among them we have the pseudo-analytical models, derived from Fröhlich and Boussinesq, and the numerical models such as the finite element method (FEM). The aim of this study was to i) perform pseudo-analytical analyzes using different Fröhlich concentration factors (3, 4, 5 or 6) and compare the vertical stress results with two-dimensional (2D) and three-dimensional (3D) FEM models; and ii) simulate a truck and a tractor by the FEM (3D) and analyze the soil properties that change after the vehicles pass. In the first chapter, for the FEM simulations, all the parameters required by the Modified Cam Clay model were determined and the geometry of the soil profile was generated, with the stratification of five types of materials in a finite element mesh generator. For the pseudo-analytical model, the Soilflex model was used, in both tire/ground contact areas were simulated by the super-ellipse model. Results revealed that 3D numerical and pseudo-analytical models showed similarities to each other for vertical stress propagation. The 2D plane strain analysis overestimated the stress propagation, inducing the overlapping of bulbs between tires of the same axle, concentrating and propagating the vertical stress in soil depths far beyond what was observed for the others. The results recommend assigning a concentration factor of 3 for pseudo-analytical simulations. For the second chapter, the passage of a tractor and a sugarcane truck was simulated in a soil, after conventional preparation. With the parameters required by the Modified Cam Clay model, the geometry of the soil profile was generated, similar to the first chapter. The tractor applied the lowest vertical stresses in the tire-soil interaction and along the profile, while the truck tires reached stresses of 750 and 880 kPa on the soil surface, corresponding to the front and rear axles, respectively. The highest preconsolidation stress obtained after vehicle simulation was found in truck traffic, exclusively in the first layer (0.0-0.20). Below the wheels of all vehicles there was a reduction in porosity. |
publishDate |
2021 |
dc.date.issued.fl_str_mv |
2021-08-18 |
dc.date.accessioned.fl_str_mv |
2023-06-21T20:20:31Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
SILVA, Raguiára Primo da. Modelagem da compactação por tráfego agrícola após o preparo do solo em tabuleiro costeiro. 2021. 93 f. Tese (Programa de Pós-Graduação em Engenharia Agrícola) - Universidade Federal Rural de Pernambuco, Recife. |
dc.identifier.uri.fl_str_mv |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/9112 |
identifier_str_mv |
SILVA, Raguiára Primo da. Modelagem da compactação por tráfego agrícola após o preparo do solo em tabuleiro costeiro. 2021. 93 f. Tese (Programa de Pós-Graduação em Engenharia Agrícola) - Universidade Federal Rural de Pernambuco, Recife. |
url |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/9112 |
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por |
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por |
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600 600 600 |
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9185445721588761555 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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Universidade Federal Rural de Pernambuco |
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UFRPE |
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Brasil |
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Departamento de Engenharia Agrícola |
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Universidade Federal Rural de Pernambuco |
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