FEM Modeling of FSW and Hybrid FSW — Lesson 2

This lesson covers the finite element modelling of the solid state welding process. It delves into the principles of friction and fixation rolling processes, heat generation, and the development of finite load modelling. The lesson also discusses the governing equations, constitutive relations, and boundary conditions involved in the process. It further explains the incorporation of heat source models, temperature-dependent properties, and latent heat of melting and solidification in the numerical model. The lesson uses the example of friction stir welding (FSW) process to illustrate these concepts.

Video Highlights

01:58 - Explanation of governing equations and boundary conditions
04:55 - Calculation of heat generation and heat flux in FSW process
10:00 - Incorporation of temperature-dependent properties and latent heat of melting and solidification
15:00 - Use of functionally graded materials in modeling of dissimilar joints
20:00 - Examples of temperature distribution and strain rate calculation in FSW processes
45:41 - How to incorporate the latent heat of melting and solidification in the finite element modelling

Key Takeaways

- Finite element modeling is a powerful tool for understanding and optimizing the solid-state welding process.
- The governing equations, boundary conditions, and constitutive relations are crucial components of the modeling process.
- Heat generation and heat flux calculations are essential for accurately modeling the FSW process.
- Incorporating temperature-dependent properties and latent heat of melting and solidification can enhance the accuracy of the model.
- Functionally graded materials can be used in the modeling of dissimilar joints to account for the varying properties of the materials.