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English to Portuguese: applications of soil mechanics General field: Tech/Engineering Detailed field: Construction / Civil Engineering
Source text - English The knowledge of soil mechanics, assuming the soil to be an ideal material elastic, isotropic, and homogeneous material—coupled with the experimental determination of soil properties, is helpful in predicting the behaviour of soil in the field.
Soil being a particulate and heterogeneous material, does not lend itself to simple analysis. Further, the difficulty is enhanced by the fact that soil strata vary in extent as well as in depth even in a small area. A thorough knowledge of soil mechanics is a prerequisite to be a successful foundation engineer.
Translation - Portuguese O conhecimento da mecânica dos solos, assumindo o solo como um material elástico, isotrópico e homogêneo - associado à determinação experimental de suas propriedades, é útil na previsão do seu comportamento em campo.
Sendo o solo um material particular e heterogêneo, não é possível defini-lo com uma simples análise. Além disso, a dificuldade está ligada ao fato de que o extrato de solo varia tanto em extensão como em profundidade mesmo em uma pequena área. Um conhecimento minucioso da mecânica dos solos é pré-requisito para um engenheiro de fundações de sucesso.
English to Portuguese: Numerical simulation of the pressures exerced by the grains on the walls of vertical silos by finite element method General field: Tech/Engineering Detailed field: Engineering (general)
Source text - English The silo, because it is a storage structure of products, involves several variables related to them and the interaction with the wall. In addition to these factors interfere in the determination of the loads acting, from the structural point of view, the stability of the silo must be studied considering the influences of the geometry and material when it is also in the state of deformation after the application of the loads, generating the effects of second order. In this context, comparing these data with the overpressure coefficients of different foreign standards for the case of discharge pressures, a very high number of possible combinations would be obtained, making an analytical or experimental study impossible if developed in a short period of time. By aiming at a broader scenario, the numerical simulation from the finite element method allows the discretization of the model in small divisions, in which the compatibility equations are obeyed by means of the boundary conditions. In order to improve the structural analysis of a silo, the research is based on the application of the finite element method through the ANSYS computational program to determine the pressures and deformations from the concentric discharge of the product stored on a slender metallic bottom silo plan. First, the computational model that simulates the discharge of products in a silo in the ANSYS was validated from experimental results obtained in previous researches, and from the comparison with the theoretical pressures obtained through the EUROCODE standard. From the model, silos were simulated, altering the variables thickness and slenderness, through the elastic and linear analysis and verified the necessity of a second order effect analysis, contemplating the effects of physical and geometric nonlinearity of the material. As the effect was not relevant, the critical buckling stresses were determined analytically by the membrane theory and the simulated shear stresses were compared. Only two of the five simulations obeyed the sizing criteria for rupture and buckling.
Translation - Portuguese O silo, por se tratar de uma estrutura de armazenamento de produtos, envolve diversas variáveis a eles relacionadas e à interação com a parede. Além desses fatores interferirem na determinação das cargas atuantes, do ponto de vista estrutural, a estabilidade do silo deve ser estudada considerando as influências da geometria e de material quando esse se apresenta também no estado de deformação após a aplicação das cargas, gerando os efeitos de segunda ordem. Nesse contexto, confrontando esses dados com os coeficientes de sobrepressão de diferentes normas estrangeiras para o caso das pressões na descarga, obtém-se um número elevado de possíveis combinações, inviabilizando um estudo analítico ou experimental se desenvolvido em um curto intervalo de tempo. Almejando um cenário mais amplo, a simulação numérica a partir do método dos elementos finitos permite a discretização do modelo em pequenas divisões, nas quais as equações de compatibilidade são obedecidas por meio das condições de contorno. Com o objetivo de aprimorar a análise estrutural de um silo, a pesquisa se baseia na aplicação do método dos elementos finitos por meio do programa computacional ANSYS para a determinação das pressões e deformações provenientes da descarga concêntrica do produto armazenado sobre um silo metálico esbelto de fundo plano. Primeiramente, o modelo computacional que simula a descarga de produtos em um silo no ANSYS foi validado a partir de resultados experimentais, obtidos em pesquisas anteriores, e da comparação com as pressões teóricas obtidas por meio da norma EUROCODE. A partir do modelo, foram simulados silos, alterando as variáveis espessura e esbeltez, através da análise elástica e linear e verificada a necessidade de uma análise de efeito de segunda ordem, contemplando os efeitos da não-linearidade física e geométrica do material. Como o efeito não foi relevante, foram determinadas analiticamente as tensões críticas de flambagem por meio da teoria da membrana e comparadas as tensões de dimensionamento simuladas na casca. Apenas duas das cinco simulações obedeceram aos critérios de dimensionamento quanto à ruptura e flambagem.
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Years of experience: 3. Registered at ProZ.com: Jul 2020.
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Bio
What people whom I’ve worked with said about me:
“Cássia provided us with accurate translations very quickly. We're
looking forward to future projects!”(Taylor
Woodcock - Reiman Gardens)
"She helped us with several tasks including reviewing our page in
its Portuguese version and our campaign to help the city of Hato Mayor for the
#HatoMayorReliefFund Visit gogreentoy.org".(Fundacion GoGreen Toys)
Besides translator, I have an academic career as an engineering
professor, graduated in civil engineering, with master degree in civil
engineering and doctorate in agricultural engineering.
In the past, I worked as an English teacher; then, I studied and became
fluent in French language too, when I got the DELF certificate.
If my objective and technical profile interest you, please contact me!
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