Publication: Simulación numérica del proceso de mecanizado con corte ortogonal de Inconel 718
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2017-06
Defense date
2017-07-10
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Abstract
Este trabajo se centra en el estudio del comportamiento de material Inconel 718, una superaleación termo-resistente de base níquel-cromo, frente al proceso de mecanizado de corte ortogonal mediante simulación a partir de modelización numérica. El modelo numérico utilizado es el basado en la ley de Johnson-Cook, que define de forma numérica el comportamiento del material. Las simulaciones, bajo distintas condiciones, se han ejecutado utilizando el software ABAQUS/Explicit, de formulación Lagrangiana. Se estudia la influencia de la velocidad de corte en las fuerzas de corte y las fuerzas de avance y en la morfología de la viruta. También se estudia influencia de la conductividad térmica en la frecuencia de segmentación de la viruta. Los resultados se han comparado y validado con los de otros ensayos experimentales publicados en la literatura. Se exponen las conclusiones obtenidas durante la realización del trabajo, así como posibles trabajos futuros relacionados con el contenido de éste.
This project focuses on the mechanical behaviour of Inconel 718, a thermo-resistant nickel-chromium-based superalloy, in orthogonal cutting through the numerical modeling of the material. The numerical model used has been developed with the comercial code ABAQUS/ Explicit, based on Lagrangian formulation. Johnson-Cook’s material law defines the equations that obey the mechanical behaviour of the material. In the project, the influence of the cutting velocity on the cutting forces and the chip morphology is studied. Also if the frequency of segmentation of the chip is influenced by the thermal conductivity. To validate the numeric model, the results of the cutting forces obtained from the simulation are compared with the cutting forces of experimental test from previous work of some authors. Conclusions reached during the whole project are shown as well as possible future works related to the content of this project.
This project focuses on the mechanical behaviour of Inconel 718, a thermo-resistant nickel-chromium-based superalloy, in orthogonal cutting through the numerical modeling of the material. The numerical model used has been developed with the comercial code ABAQUS/ Explicit, based on Lagrangian formulation. Johnson-Cook’s material law defines the equations that obey the mechanical behaviour of the material. In the project, the influence of the cutting velocity on the cutting forces and the chip morphology is studied. Also if the frequency of segmentation of the chip is influenced by the thermal conductivity. To validate the numeric model, the results of the cutting forces obtained from the simulation are compared with the cutting forces of experimental test from previous work of some authors. Conclusions reached during the whole project are shown as well as possible future works related to the content of this project.
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Método de elementos finitos (FEM), Metales, Ensayo de materiales, Aleación termo-resistente