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dc.contributor.authorKona Ravi, Aswini
dc.contributor.authorBhasin, Akhil
dc.contributor.authorGomez, Leandro
dc.contributor.authorOlivares, Gerardo
dc.contributor.authorGomez, Adrian
dc.contributor.authorKeshavanarayana, Suresh R.
dc.contributor.authorPang, Jenna K.
dc.contributor.authorMolitor, Matthew
dc.contributor.authorRassaian, Mostafa
dc.identifier.citationKona Ravi, Aswini; Bhasin, Akhil; Gomez, Leandro; Olivares, Gerardo; Gomez, Adrian; Keshavanarayana, Suresh R.; Pang, Jenna K.; Molitor, Matthew; Rassaian, Mostafa. 2019. Evaluation of ls-dyna mat162 for modeling composite fastener joints for high rates of loading. AIAA Scitech Forum: Session: NASA ACC Section for High Energy Dynamic Impacten_US
dc.descriptionClick on the DOI link to access the article (may not be free).en_US
dc.description.abstractIn the present work, the behavior of composite-fastener joints in bearing failure at dynamic stroke rates of 500 in/s, 300 in/s and 100 in/s has been evaluated through progressive damage analysis (PDA) material model in LS-DYNA, namely MAT162. Two joint types: pin and fastener, representative of fastener used in aerospace structures, were analyzed to identify the differences between without and with preload conditions. A meso-level approach where each lamina was modeled separately was employed and a contact definition based on fracture toughness data was defined to represent composite delamination behavior. Test fixture had been modeled in a detailed manner to account for the dynamic effects and the simulation results were validated against experimental data. Preliminary test-analysis correlation indicated that MAT162 predicted results conservatively when compared to tests. Debris accumulation were observed to greatly affect the test results which were not considered in the current modelling strategies.en_US
dc.description.sponsorshipNASA under Award Nos. NNL09AA00A and 80LARC17C0004.en_US
dc.publisherAmerican Institute of Aeronautics and Astronautics Inc.en_US
dc.relation.ispartofseriesAIAA Scitech Forum: Session: NASA ACC Section for High Energy Dynamic Impact;2019
dc.subjectHigh energy dynamic impacten_US
dc.subjectProgressive failure analysisen_US
dc.subjectSubject category: structuresen_US
dc.titleEvaluation of ls-dyna mat162 for modeling composite fastener joints for high rates of loadingen_US
dc.typeConference paperen_US
dc.rights.holder© 2019 American Institute of Aeronautics and Astronauticsen_US

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