Steady-state modelling and analysis of process-induced stress and deformation in thermoset pultrusion processes

Michael Sandberg*, Onur Yuksel, Ismet Baran, Jon Spangenberg, Jesper H. Hattel

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Process-induced stress and deformation are critical factors when ensuring product quality and structural integrity of composite profiles manufactured using thermoset pultrusion processes. In this paper, we present a new steady-state 3D-Eulerian numerical framework that enables 9–35 times faster computations compared to the current state-of-the-art quasi-static 3D-methods. In addition, we show how process-induced effects from the profile-advancing pulling force and an initial compressive stress state can be modelled. We demonstrate in theoretical parameter studies that the pulling force advances die-detachment and reduces die-swelling, while the initial compressive stress state has the opposite but a more pronounced effect.

Original languageEnglish
Article number108812
JournalComposites Part B: Engineering
Volume216
DOIs
Publication statusPublished - 1 Jul 2021

Keywords

  • Composite processing
  • Eulerian solid mechanics
  • Process-induced deformation
  • Pultrusion
  • Residual stresses
  • Streamline integration
  • Thermo-chemical-mechanical modelling

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