Adjustment of residual stresses in unsymmetric fiber-reinforced composites using genetic algorithms

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

Abstract

During the manufacturing process of multilayered fiber-reinforced composites with variable fiber orientations, residual stresses build up in these composites due to the directional expansion of single unidirectionally reinforced layers. Depending on the laminate lay-up, the inhomogeneous residual stresses, which are caused by thermal effects, moisture absorption, and chemical shrinkage, can lead to large multistable out-of-plane deformations. Instead of avoiding these curvatures, they can be advantageously used for technical applications following the near-net-shape technology. In order to adjust the deformations to the technical requirements, genetic algorithms in combination with a nonlinear calculation method have been developed, which can purposefully adapt the laminate lay-up depending on the loading and process parameters.

Details

Original languageEnglish
Pages (from-to)71-78
Number of pages8
JournalMechanics of Composite Materials
Volume37
Issue number1
Publication statusPublished - Jan 2001
Peer-reviewedYes

External IDs

Scopus 0035548661
Scopus 0035535067
ORCID /0000-0003-1370-064X/work/142243407

Keywords

Keywords

  • Fiber-reinforced composite, Genetic algorithm, Residual stresses, Unsymmetric lay-up