Multi-scale Modelling Approach for Contributing to Reduced Distortion in Parts Made by Laser-based Powder Bed Fusion

Christian Seidel, Michael F. Zaeh

Research output: Contribution to journalConference articlepeer-review

15 Scopus citations

Abstract

Within this paper, a control volume-based multi-scale approach for heat input modelling in laser-based powder bed fusion of metals is described. Thereby, the Rosenthal equation is used to analyse beam-powder interaction for a single laser track. Based on both the Rosenthal results for melt pool dimensions and experimentally determined melt pool depth, a single layer model is developed. Results for the temperature field, gathered by applying the single layer model, serve as data for validating the control volume-based approach on the build-up scale. Finally, a case study with a turbine blade delivers the proof-of-concept for the applied modelling approaches, because process-related distortions are reduced by more than 40% through pre-deforming the blade according to build-up simulation results.

Original languageEnglish
Pages (from-to)197-202
Number of pages6
JournalProcedia CIRP
Volume67
DOIs
StatePublished - 2018
Event11th CIRP International Conference on Intelligent Computation in Manufacturing Engineering, CIRP ICME 2017 - Ischia, Naples, Italy
Duration: 19 Jul 201721 Jul 2017

Keywords

  • Additive manufacturing
  • Distortion
  • Heat input modelling
  • Laser beam melting
  • Powder bed fusion
  • Selective laser melting
  • Simulation

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