Analysis of spring-in deformation in L-shaped profiles pultruded at different pulling speeds: Mathematical simulation and experimental results

Alexander Vedernikov, Alexander Safonov, Fausto Tucci, Pierpaolo Carlone, Iskander Akhatov

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Citations (Scopus)

Abstract

Peculiarities of the pultrusion manufacturing process lead to the occurrence of spring-in deformations, whereas their value depends on the pulling speed. In this article experimental and numerical analysis was carried out for glass fiber/vinyl ester resin 75 × 75 × 6 mm L-shaped profiles pultruded at pulling speeds of 200 and 600 mm/min. Spring-in angles of produced profiles were determined on the same day of manufacturing when profiles cooled down to room temperature. Higher pulling speeds provoked increased values of spring-in. 2D numerical model accounting for thermo-chemical and mechanical composite's behavior during pultrusion was implemented in ABAQUS software. Cure Hardening Instantaneous Linear Elastic (Chile) constitutive law was used to describe matrix resin Young's modulus evolution. Since both unidirectional (UD) rovings and fabric material were utilized, effective mechanical properties of UD and fabric layers were calculated in accordance with Self-Consistent Field Micromechanics (SCFM) approach. Spring-in angles determined within experimental and numerical studies were compared and a good correlation was found: the errors were 12.6% and 6% for the pulling speed of 200 and 600 mm/min, respectively.

Original languageEnglish
Title of host publicationESAFORM 2021 - 24th International Conference on Material Forming
PublisherPoPuPS (University of LiFge Library)
ISBN (Electronic)9782870193020
DOIs
Publication statusPublished - 2021
Event24th International ESAFORM Conference on Material Forming, ESAFORM 2021 - Virtual, Online, Belgium
Duration: 14 Apr 202116 Apr 2021

Publication series

NameESAFORM 2021 - 24th International Conference on Material Forming

Conference

Conference24th International ESAFORM Conference on Material Forming, ESAFORM 2021
Country/TerritoryBelgium
CityVirtual, Online
Period14/04/2116/04/21

Keywords

  • Cure hardening instantaneous linear elastic model
  • Finite flement analysis
  • Pultrusion
  • Shape distortions
  • Spring-in

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