Estudio computacional de materiales funcionalmente gradados sometidos a cargas de impacto de baja velocidad
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Murillo Cardoso, Javier Eduardo
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Trabajo de grado - Maestría
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EspañolFecha de publicación
2015-03-11
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Resumen: Con el fin de efectuar un estudio computacional de los materiales funcionalmente gradados sometidos a cargas de impacto de baja velocidad, en el presente trabajo se muestra mediante simulaciones, con el método de elementos finitos y optimización topológica, como actúan cargas de impacto sobre láminas de un acero, comparando la energía que atraviesa un disco de acero solida respecto con la energía en discos del mismo material pero gradadas. La gradación se realiza mediante orificios circulares, donde la función de gradación cambia en la misma dirección del impacto; en particular, en este documento se discuten cinco funciones de gradación y cuatro diferentes tipos de acero. Con esas consideraciones las estructuras se someten a cargas de impacto de baja velocidad (no se consideran efectos de plasticidad del material) y se comparan los resultados.
Abstract: In order to perform a computational study of functionally graded materials subjected to impact loads low speed, in this paper we show through simulations, using finite element method and topology optimization, and impact loads acting on sheets of steel, comparing the energy flowing through a solid steel disc with respect to energy in disks of the same material but graded. The grading is done by circular holes where gradation function changes in the same direction of impact, in particular, in this document gradation five functions and four different types of steel are discussed. With these considerations, the structures are subjected to impact loads low speed (not considered effects of plasticity of the material) and the results are compared.
Abstract: In order to perform a computational study of functionally graded materials subjected to impact loads low speed, in this paper we show through simulations, using finite element method and topology optimization, and impact loads acting on sheets of steel, comparing the energy flowing through a solid steel disc with respect to energy in disks of the same material but graded. The grading is done by circular holes where gradation function changes in the same direction of impact, in particular, in this document gradation five functions and four different types of steel are discussed. With these considerations, the structures are subjected to impact loads low speed (not considered effects of plasticity of the material) and the results are compared.