Implementation of FEM for Fluid Flow in Fusion Welding Processes — Lesson 2

This lesson covers the material flow model in fusion rolling processes. It delves into the temperature distribution, heat conduction equation, and the need for a volumetric heat source model. The lesson also discusses the effects of metal flow in the fusion rolling process and the importance of surface flux. It further explains the conservation of mass, momentum, and energy in the process. The lesson also touches on the concept of effective viscosity and thermal conductivity. It concludes by discussing the application of the penalty finite element method and the tracking of the solid-liquid interface.

Video Highlights

01:15 - Heat transfer and fluid flow in fusion rolling process
08:52 - Tracking of the conservation of mass, momentum, and energy equation
19:46 - Tracking of the solid-liquid interface
27:23 - Time-temperature profile during the welding process
37:23 - Semi-analytical model of the keyhole shape and size
48:53 - Keyhole profile in the spot welding process

Key Takeaways

- The material flow model in fusion rolling processes involves temperature distribution and heat conduction equations.
- The model requires a volumetric heat source, especially in laser link processes.
- The conservation of mass, momentum, and energy is crucial in the process.
- The concept of effective viscosity and thermal conductivity is important in the model.
- The penalty finite element method simplifies the solution methodology of the Navier Stoke equation.
- Tracking the solid-liquid interface is a complex but necessary part of the process.