Experimental Determination and Numerical Modelling of Process Induced Strains and Residual Stresses in Thick Glass/Epoxy Laminate

Publication: Research - peer-reviewArticle in proceedings – Annual report year: 2012

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In this work, a cure hardening instantaneous linear elastic (CHILE) model and a path dependent (PD) constitutive approach are compared, for the case of modelling strain build-up during curing of a thick composite laminate part. The PD approach is a limiting case of viscoelasticity with path dependency on temperature and cure degree. Model predictions are compared to experimentally determined in-situ strains, determined using FBG sensors. It was found that both models offer good approximations of internal strain build-up. A general shortcoming is the lack of capturing rate-dependent effects such as creep.
Original languageEnglish
Title of host publicationECCM15 - 15th European Conference On Composite Materials
Number of pages8
Publication date2012
StatePublished

Conference

ConferenceECCM15
CountryItaly
CityVenica
Period24/06/1228/06/12
Internet addresshttp://www.eccm15.org/

Keywords

  • Numerical modeling, Shape distortions, FBG sensoring, Curing
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