Evaluation of notched strength of thin-ply composite materials using adaptive discrete-smeared crack (A-DiSC) method

Ryo Higuchi, Ryoma Aoki, Tomohiro Yokozeki, Sota Onodera, Tomonaga Okabe, Karh Heng Leong, Jie Zhi, Xin Lu, Tong Earn Tay

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

Abstract

This study develops a multi-fidelity fracture simulation scheme of composite materials which combines the Adaptive Discrete-Smeared Crack (A-DiSC) method and the theoretical model for saturated crack density. The A-DiSC employs the discrete crack model (DCM) firstly to model the transverse cracks in the laminates. If the crack density of each ply reaches the saturation value calculated by the theoretical model, the DCM is converted to the smeared crack model (SCM). At this point, some cracks that are longer than a certain critical length remain explicitly modelled by DCM since they can significantly affect subsequent path to final failure and fracture. By combining the two models, this method reduces the computational cost while preserving sufficient prediction accuracy. In order to verify the prediction accuracy of developed scheme, the simulation of the open-hole tensile test of thin-ply composite laminates were carried out, and predicted results were compared with the experiments.

Original languageEnglish
Title of host publicationProceedings of the American Society for Composites - 35th Technical Conference, ASC 2020
EditorsKishore Pochiraju, Nikhil Gupta
PublisherDEStech Publications
Pages1452-1465
Number of pages14
ISBN (Electronic)9781605956657
Publication statusPublished - 2020
Event35th Annual American Society for Composites Technical Conference, ASC 2020 - Virtual, Online
Duration: 2020 Sep 142020 Sep 17

Publication series

NameProceedings of the American Society for Composites - 35th Technical Conference, ASC 2020

Conference

Conference35th Annual American Society for Composites Technical Conference, ASC 2020
CityVirtual, Online
Period20/9/1420/9/17

ASJC Scopus subject areas

  • Ceramics and Composites

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