A multi-scale stochastic fracture modelling calibration using Monte Carlo simulations

R Sencu, James Yang, Y Wang

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Abstract

The validation of macroscopic fracture modelling of heterogenous materials is strongly related to the effectiveness of the homogenization principle at fine scales. Often because the complete material morphology is missing, artificial repetitive boundary conditions are deployed despite many criticisms on their inadequate local subscale assumptions. This paper applies a recently developed multiscale stochastic fracture modelling approach (MsSFrM) to simulate crack growth in FRP materials. First, image-based models are solved at micro level and
mapped onto the macro scale using a two-scales adaptive window principle; and second, the macro scale is solved by using a calibrated heterogeneous cohesive interface crack model based on [6, 7]. Two further enhancements are proposed here, both being able of representing the macro continuum in a stochastic fashion. First, the micro scale is related to various degrees of aggregations (DAG) via Voronoi tessellation statistics; and second, Karhunen-Loeve (KL) material property expansions are used for areas where images cannot be
provided.
Original languageEnglish
Title of host publicationProceedings of the 22nd UK National Conference of the Association for Computational Mechanics in Engineering
EditorsAkbar Javadi, Mohammed S. Hussain
Place of PublicationUK
Publisher University of Exeter
Pages105-108
Number of pages4
Edition1
ISBN (Electronic)978-0-902746-30-5
Publication statusPublished - 2014
Externally publishedYes
Event22nd UK Conference of the Association for Computational Mechanics in Engineering - Exeter, United Kingdom
Duration: 1 Apr 20143 Apr 2014
http://emps.exeter.ac.uk/media/universityofexeter/emps/engineering/research/acme/Final_ACME2014_Proceedings.pdf

Conference

Conference22nd UK Conference of the Association for Computational Mechanics in Engineering
Abbreviated titleACME2014
CountryUnited Kingdom
CityExeter
Period1/04/143/04/14
Internet address

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