Modelling Approaches of Additive Manufacturing — Lesson 3

This lesson covers the finite element modeling of the wire additive manufacturing process. It delves into the solution methodologies useful in additive manufacturing, including heat transfer problem-solving, fluid flow problem-solving, and stress analysis. The lesson also highlights the importance of defining the applicable solution domain in additive manufacturing processes. It further discusses the challenges associated with wire additive manufacturing, such as high material costs, reliability of machines, and environmental concerns. The lesson also explains the need for accurate thermal field prediction, which can be achieved through convective heat transfer in the melt pool.

Video Highlights

00:37 - Finite element modeling of the wire additive manufacturing process
07:38 - Finite element modeling of the laser additive manufacturing process
14:09 - Specific elements activation techniques used to simulate the material deposition
30:13 - Challenges associated with 3D printing or additive manufacturing process

Key Takeaways

- The wire additive manufacturing process involves solving heat transfer problems, fluid flow problems, and stress analysis.
- The solution domain in additive manufacturing processes needs to be defined accurately.
- Wire additive manufacturing faces challenges such as high material costs, machine reliability, and environmental concerns.
- Accurate thermal field prediction is crucial and can be achieved through convective heat transfer in the melt pool.
- The finite element modeling approach is used to understand the residual stress and distortion level in additive manufacturing structures.