Publication: Optimización de la simulación numérica del proceso de mecanizado ortogonal del Ti-6Al-4V
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2018-06
Defense date
2018-07-03
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Abstract
El objetivo de este proyecto es la optimización de la simulacion numérica del proceso de mecanizado ortogonal del Ti-6Al-4V. La evolución del uso del titanito en la industria ha sufrido un aumento pronunciado durante los ultimos años. Por lo tanto, la reducción del tiempo de simulación en las operaciones de mecanizado es crucial para optimizar el estudio del comportamiento del material.
Las simulaciones númericas se han ejecutado mediante el software ABAQUS / Explicit. Este software ha permitido realizar la modelización del proceso propuesto en este trabajo, operación de mecanizado, y la correcta emulación del comportamiento del material en la operación de corte, mediante la utilización del modelo Jhonson-Cook.
Para alcanzar el objetivo del proyecto, se ha propuesto la utilización de diferentes modelizaciones de la herramienta de corte, realizando una comparación entre ambas. La comparación se ha realizado observando la variación de determinados factores frente a la velocidad de avance y la energía de fractura del material. Los factores obsevados han sido los siguientes: Las fuerzas de avance y de corte, la morfología de la viruta (analizando el grado de segmentación de la viruta) y la evolución de la temperatura, en la herramienta y en la viruta, durante el proceso de mecanizado.
Las conclusiones obtenidas con base en las investigaciones pasadas han resultado ser útiles para la optimización del modelo de simulación, creando una base de trabajo para futuras investigaciones.
This project´s objective is the optimization of the numerical simulation of the orthogonal machining process of Ti-6Al-4V. The evolution in the use of the titanum in the industry has undergone a sharp increase during the last years. Therefore, the reduction of the simulation time in the machining operations is crucial to optimize the study of the behaviour of the material. The numerical simulations have been executed using the ABAQUS / Explicit software. This software has allowed the performance of the modeling of the proposed process, the machining operation and the correct emulation of the behaviour of the material in the cutting operation, by using the Jhonson-Cook model. In order to the objective pursued in this project, the use of different modeling of the cutting tool has been proposed, making a comparison between both. The comparison has been made by observing the variation of certain factors in relation with the speed of advance and the fracture energy of the material. The analyzed factors have been the following: The cutting forces, the morphology of the shaving (analyzing the degree of segmentation of the shaving) and the evolution of the temperature, in the tool and in the chip, during the process of mechanized . The conclusions obtained have been useful for the optimization of the simulation model and have allowed the creation of a database which can be used for future investigations.
This project´s objective is the optimization of the numerical simulation of the orthogonal machining process of Ti-6Al-4V. The evolution in the use of the titanum in the industry has undergone a sharp increase during the last years. Therefore, the reduction of the simulation time in the machining operations is crucial to optimize the study of the behaviour of the material. The numerical simulations have been executed using the ABAQUS / Explicit software. This software has allowed the performance of the modeling of the proposed process, the machining operation and the correct emulation of the behaviour of the material in the cutting operation, by using the Jhonson-Cook model. In order to the objective pursued in this project, the use of different modeling of the cutting tool has been proposed, making a comparison between both. The comparison has been made by observing the variation of certain factors in relation with the speed of advance and the fracture energy of the material. The analyzed factors have been the following: The cutting forces, the morphology of the shaving (analyzing the degree of segmentation of the shaving) and the evolution of the temperature, in the tool and in the chip, during the process of mechanized . The conclusions obtained have been useful for the optimization of the simulation model and have allowed the creation of a database which can be used for future investigations.
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Simulación numérica, Mecanizado ortogonal, Titanio, Ensayo de materiales