Experimental and numerical thermo-mechanical analysis of wire-based laser metal deposition of Al-Mg alloys

Research output: Journal contributionsJournal articlesResearchpeer-review

Authors

A finite element model is employed to perform a sequentially coupled thermo-mechanical analysis for enabling rapid process simulations of temperature fields, residual stresses and distortions for the production of additively manufactured parts via laser metal deposition. Experimental identification of characteristic process features such as temperature distribution, melt pool dimensions and bead geometries were used for the initial built-up and calibration of the model. The addition of material during process simulation is realised through reactivating inactive elements during the transient heat transfer analysis and through reactivating a combination of inactive and quiet elements during the mechanical analysis. The travelling heat source is geometrically bounded to precisely control the volume of its energy distribution. The results of the transient heat transfer analysis are sequentially coupled to a mechanical analysis for obtaining information on the resulting residual stresses and deformation. Based on the good agreement between numerical and experimental results of the thermal analysis, conclusions on the corresponding residual stress distributions and deformation are made. It is shown that the model represents an efficient tool for process prediction regarding thermal history, residual stresses and final-part deformations. Finally, the model is utilised to identify parameters and conditions of the process that lead to reduced residual stresses and deformations of the investigated additive part.

Original languageEnglish
JournalJournal of Manufacturing Processes
Volume64
Pages (from-to)982-995
Number of pages14
ISSN1526-6125
DOIs
Publication statusPublished - 01.04.2021

    Research areas

  • Additive manufacturing, Aluminium alloys, Finite element simulation, Laser metal deposition
  • Engineering

Documents

DOI

Recently viewed

Publications

  1. Cultural Consumption Analysis: Beyond Structure and Agency
  2. 'Visions behind the Veil'
  3. «Mein Kompetenzprofil» - Stärken erkennen und Selbstlernprozesse anstoßen
  4. Future-Proofing Fuel Cells
  5. Biodegradability and ecotoxicitiy of tramadol, ranitidine, and their photoderivatives in the aquatic environment
  6. Social Work and Society
  7. Simulation of the fate of Boscalid and its transformation product 4-Chlorobenzoic acid in a vineyard-terraces catchment
  8. Kindliches Schweigen oder taube Institutionen?
  9. Zur Reform des Prüfungsausschusses post BilMoG
  10. Digital Workplace Transformation:
  11. Swissness Communication and its Impact on Consumer-Brand Relationships
  12. Studying marriage migration to Europe from below
  13. Architektur strategiefokussierter Managementsysteme
  14. "Dit Is Berlin"
  15. Blaue Flecken, kochendes Wasser und überforderte Mütter
  16. The effect of voters’ economic perception, Brexit and campaigns on the evaluation of party leaders over time
  17. Financial Fragility and the Control of Credit
  18. The exact determination of subjective risk and comfort thresholds in car following
  19. Gynandromorphy in Eulaema atleticana Nemésio (Apidae, Euglossini)
  20. Forming of aesthetic judgements in movement
  21. Durch Benchmarking lernen
  22. Immaterial Labour and World Order: An Evaluation of a Thesis
  23. Lebhafte Artefakte
  24. Alternatives considered but not disclosed
  25. Studienwahlmotive und Beliefs zu Beginn des Mathematikstudiums.
  26. Fehr on Human Altruism (Editorial)
  27. Partizipation von Leistungserbringern - Eine mikroökonomische Analyse
  28. Bildung, Biografie und Anerkennung
  29. Schreiben in der Grundschule
  30. Demand Chain Management