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Prediction of Damage Progression in Notched Tensile Specimens: Comparison Between Two Intra-laminar Damage Models

Reiner, Johannes and Zobeiry, Navid and Vaziri, Reza and Feser, Thomas and Waimer, Matthias and Schüler, Dominik and Toso-Pentecote, Nathalie (2017) Prediction of Damage Progression in Notched Tensile Specimens: Comparison Between Two Intra-laminar Damage Models. VI ECCOMAS Thematic Conference on the Mechanical Response of Composites COMPOSITES 2017, 20.-22. September 2017, Eindhoven, Niederlande.

Full text not available from this repository.

Abstract

In this work, two intralaminar damage models with different underlying assumptions are utilized to predict the damage response of notched composite laminates. One is a sub-laminate based continuum damage model, CODAM2, implemented in LS-DYNA, and the other is a ply-based damage model, ABQ_DLR_UD, that uses the Ladevèze damage model as its basis and is implemented as a user-material model (VUMAT) in Abaqus/Explicit. Aside from the base-formulations, different variations of the models including local and nonlocal integration (smearing) schemes are also considered. These models are employed to predict the damage response of Over-height compact tension (OCT) and scaled center-notched specimens made out of IM7/8552 CFRP laminates with quasi-isotropic layup. For each geometry and loading scenario, sensitivity of the predictions with respect to various damage parameters including peak stress and fracture energy as well as assumptions made on the shape of the strain-softening curve are investigated. The results shed light on the effect of various assumptions in these models on predicting damage progression in notched specimens.

Item URL in elib:https://elib.dlr.de/117128/
Document Type:Conference or Workshop Item (Speech)
Title:Prediction of Damage Progression in Notched Tensile Specimens: Comparison Between Two Intra-laminar Damage Models
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Reiner, JohannesThe University of British ColumbiaUNSPECIFIED
Zobeiry, NavidThe University of British ColumbiaUNSPECIFIED
Vaziri, RezaThe University of British ColumbiaUNSPECIFIED
Feser, ThomasBT-SINUNSPECIFIED
Waimer, MatthiasBT-SINUNSPECIFIED
Schüler, DominikDominik.Schueler (at) dlr.dehttps://orcid.org/0000-0003-1499-3106
Toso-Pentecote, NathalieUNSPECIFIEDUNSPECIFIED
Date:September 2017
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Simulation, Continuum Damage Mechanics, Notched Geometries
Event Title:VI ECCOMAS Thematic Conference on the Mechanical Response of Composites COMPOSITES 2017
Event Location:Eindhoven, Niederlande
Event Type:international Conference
Event Dates:20.-22. September 2017
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials (old)
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design
Deposited By: Feser, Thomas
Deposited On:20 Dec 2017 15:26
Last Modified:20 Dec 2017 15:26

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