A multiphysic approach for the thermomechanical simulation of the laser welding and laser-based DED processes
- Autores: Oihane Murua de la Mata
- Directores de la Tesis: Aitzol Lamikiz Mentxaka (dir. tes.), Jon Iñaki Arrizubieta Arrate (codir. tes.)
- Lectura: En la Universidad del País Vasco - Euskal Herriko Unibertsitatea ( España ) en 2025
- Idioma: inglés
- Programa de doctorado: Programa de Doctorado en Ingeniería Mecánica por la Universidad del País Vasco/Euskal Herriko Unibertsitatea
- Materias:
- Enlaces
- Tesis en acceso abierto en: ADDI
- Resumen
This PhD thesis aims to develop a multiscale laser process model able to forecast the thermomechanical reactions of the studied part during and after the manufacturing process. During the course of this research work, several topics have been covered in order to overcome the limitations actual modelling approaches have. Thus, the laser processes, especially laser beam welding (LBW) and Laser Directed Energy Deposition (DED-LB), as well as their modelling objectives have been studied in detail.
The actual state-of-the-art affirms laser process modelling to be an efficient way of obtaining the first parameter set for conducting the required material or process characterization in a time- and resource efficient way.
The first part of this PhD thesis, and the core of this research, is based on the development of a numerical model for laser processes. This numerical model is derived to reproduce the LBW and the DED-LB processes. Therefore, this work presents an investigation focused on the development of an adaptable laser process model. The proposed methodology is meant for simulating successfully the LBW and the DED-LB processes. In both cases, the achieved modelled results are first verified with simple experimental tests. Finally, the model is validated for both laser processes with more challenging part welding and depositing geometries of a higher complexity.
