Caracterización del comportamiento mecánico durante la fase de estricción de los aceros corrugados Tempcore 500C: experimentación y simulación

Beatriz  Hortigon; Fernando  Ancio; María A.  Herrera-Garrido; José M.  Gallardo

doi:10.3989/revmetalm.199

Autores/as

Beatriz Hortigon Escuela Politécnica Superior, Universidad de Sevilla https://orcid.org/0000-0002-3362-3648
Fernando Ancio Escuela Politécnica Superior, Universidad de Sevilla https://orcid.org/0000-0002-2110-0225
María A. Herrera-Garrido Escuela Politécnica Superior, Universidad de Sevilla https://orcid.org/0000-0002-8660-984X
José M. Gallardo Escuela Técnica Superior de Ingeniería, Universidad de Sevilla https://orcid.org/0000-0002-7007-2259

DOI:

https://doi.org/10.3989/revmetalm.199

Palabras clave:

Análisis por elementos finitos, Acero Tempcore, Barras corrugadas de refuerzo, Ensayo de tracción, Estricción, Fractura

Resumen

El cálculo de los valores de tensión y deformación verdaderos en probetas cilíndricas de metales dúctiles durante la estricción ha sido ampliamente estudiado por diversos autores partiendo, en todos los casos, de una geometría simétrica del cuello. En este estudio se analiza la evolución del perfil del cuello en las barras corrugadas de los aceros Tempcore, proponiendo una metodología experimental mediante análisis en 3D. Conocer el verdadero comportamiento hasta rotura de este acero es de vital importancia para describir su respuesta ante situaciones límites. Los resultados experimentales obtenidos son comparados con los de barras cilíndricas de acero similar, siendo ambos validados mediante análisis por Elementos Finitos. Dicha comparativa permite comprobar que la existencia de corrugas implica una reducción de la deformación en rotura debido a la concentración de tensiones que se origina en zonas próximas al arranque de las mismas.

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