Analysis of residual stresses inherited during manufacturing of carbon-epoxy composites with concentrator

Daria A. Bondarchuk, Boris N. Fedulov

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

Abstract

In the present study, the effect of specimen sizes on the residual stresses inherited during manufacturing of IM7/8552-1 carbon-epoxy composites with concentrator was investigated. The first part of the research is devoted to the understanding of residual stresses in regular specimens during cure cycle depending on different ply and laminate thickness. To describe the behavior of the composite material during the manufacturing process - including processes of formation, polymerization, development of residual strains and stresses the special user subroutine was developed and implemented into ABAQUS FEM software. The second part of this paper concerns the study of the «hole-size effect» on the value of residual stress in composites with concentrator. The most important variables have been identified as notch size, and ply and laminate thickness. These have been scaled in two ways: independently and simultaneously. Obtained by modelling values for stress components are essential and cannot be ignored in consequent structural analysis.

Original languageEnglish
Title of host publicationECCM 2018 - 18th European Conference on Composite Materials
PublisherApplied Mechanics Laboratory
ISBN (Electronic)9781510896932
Publication statusPublished - 2020
Externally publishedYes
Event18th European Conference on Composite Materials, ECCM 2018 - Athens, Greece
Duration: 24 Jun 201828 Jun 2018

Publication series

NameECCM 2018 - 18th European Conference on Composite Materials

Conference

Conference18th European Conference on Composite Materials, ECCM 2018
Country/TerritoryGreece
CityAthens
Period24/06/1828/06/18

Keywords

  • Composite
  • Concentrator
  • Free edge
  • Residual stress

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