Efficient LPBF process simulation using finite element modeling with adaptive remeshing for distortions and residual stresses prediction

Alaa Olleak, Zhimin Xi

Research output: Contribution to journalArticle

Abstract

As-built metallic parts manufactured by the laser powder bed fusion (LPBF) process are usually associated with high residual stresses and distortions due to the thermal cycles during the process. Finite Element Modeling (FEM) is widely used to simulate the build process with the assumption of the lumped layer thickness. This paper proposes an adaptive remeshing framework by which the assumed layer thickness value can be reduced while minimizing model size and the number of nodes. Preliminary results show that model results find good agreement with experimental results and previous FEM predictions, along with significant computational reduction.

Original languageEnglish (US)
Pages (from-to)140-144
Number of pages5
JournalManufacturing Letters
Volume24
DOIs
StatePublished - Apr 2020

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Industrial and Manufacturing Engineering

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