Modeling of Prepregs during Automated Draping Sequences

Christian Krogh, Jens Ammitzbøll Glud, Johnny Jakobsen

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

5 Citations (Scopus)

Abstract

The behavior of wowen prepreg fabric during automated draping sequences is investigated. A drape tool under development with an arrangement of grippers facilitates the placement of a woven prepreg fabric in a mold. It is essential that the draped configuration is free from wrinkles and other defects. The present study aims at setting up a virtual draping framework capable of modeling the draping process from the initial flat fabric to the final double curved shape and aims at assisting the development of an automated drape tool. The virtual raping framework consists of a kinematic mapping algorithm used to generate target points on the mold which are used as input to a draping sequence planner. The draping sequence planner prescribes the displacement history for each gripper in the drape tool and these displacements are then applied to each gripper in a transient model of the draping sequence. The model is based on a transient finite element analysis with the material’s constitutive behavior currently being
approximated as linear elastic orthotropic. In-plane tensile and bias-extension tests as well as bending tests are conducted and used as input for the model. The virtual draping framework shows a good potential for obtaining a better understanding of the drape process and guide the development of the drape tool. However, results obtained from using the framework on a simple test case
indicate that the generation of draping sequences is non-trivial.
Translated title of the contributionModellering af Præ-Imprægnerede Fibermåtter under Automatiske Draperingssekvenser
Original languageEnglish
Title of host publicationProceedings of the 20th International Esaforum Conference on Material Forming - ESAFORM 2017
Volume1896
PublisherAIP Conference Proceedings
Publication date16 Oct 2017
Edition1
ISBN (Electronic)978-0-7354-1580-5
DOIs
Publication statusPublished - 16 Oct 2017
EventThe 20th International Conference on material forming - Dublin, Ireland
Duration: 26 Apr 201728 Apr 2017
https://www.transvalor.com/en/actualites/detail/esaform-2017-20th-international-conference-on-material-forming-.115.html

Conference

ConferenceThe 20th International Conference on material forming
Country/TerritoryIreland
CityDublin
Period26/04/201728/04/2017
Internet address

Keywords

  • Composites
  • Prepregs
  • Automation
  • Draping
  • Finite Element Analysis

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