Ray tracing method with implicit surface detection for smoothed particle hydrodynamics‐based laser beam welding simulations

Materialwissenschaft und Werkstofftechnik, vol. 55, pp. 40–52

Abstract

Abstract An important prerequisite for process simulations of laser beam welding is the accurate depiction of the surface energy distribution. This requires capturing the optical effects of the laser beam occurring at the free surface. In this work, a novel optics ray tracing scheme is proposed which can handle the reflection and absorption dynamics associated with laser beam welding. Showcasing the applicability of the approach, it is coupled with a novel surface detection algorithm based on smoothed particle hydrodynamics (SPH), which offers significant performance benefits over reconstruction‐based methods. The results are compared to state‐of‐the‐art experimental results in laser beam welding, for which an excellent correspondence in the case of the energy distributions inside capillaries is shown.

Authors 7

1. Lukas Westhofen corresponding Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Visual Computing Institute Ahornstraße 55 52056 Aachen Germany

2. Jan Kruska Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Welding and Joining Institute Pontstraße 49 52062 Aachen Germany

3. Jan Bender Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Visual Computing Institute Ahornstraße 55 52056 Aachen Germany

4. Sergej Warkentin Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Welding and Joining Institute Pontstraße 49 52062 Aachen Germany

5. Oleg Mokrov Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Welding and Joining Institute Pontstraße 49 52062 Aachen Germany

6. Rahul Sharma Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Welding and Joining Institute Pontstraße 49 52062 Aachen Germany

7. Uwe Reisgen Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Welding and Joining Institute Pontstraße 49 52062 Aachen Germany