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dc.contributor.advisorKeshavanarayana, Suresh R.
dc.contributor.authorMarco Carrillo, Rodrigo
dc.descriptionThesis (M.S.)-- Wichita State University, College of Engineering, Dept. of Aerospace Engineering
dc.description.abstractThis document presents results from a numerical study of the progressive damage capabilities of the MAT162 material model in Ls-DYNA explicit finite element code. Single-shear fastener lap joint of multi-directional laminates made of AS4/3501-6 carbon/epoxy unitape plies were used in the study. MAT162 is a progressive damage model which utilizes Hashin failure criteria to evaluate damage initiation and progression in fabric and unidirectional composite plies. [45/-45/0/90]2S, [45/0/-45/90]2S and [30/-30/0/90]2S laminates have been investigated in this study. The analysis included unnotched, open-hole and single-shear lap joints using fasteners. Remote stress-strain curves, damage initiation and damage progression are presented for all the analyzed cases. The analyses indicate matrix cracking as the damage initiator at off-axis ply interfaces in [45/-45/0/90]2S, [45/0/-45/90]2S and [30/-30/0/90]2S laminates. Matrix cracking propagation led to delamination at the 0 degree/90 degree interface. The load transferred through the fastener was 30% for the [45/-45/0/90]2S and [45/0/-45/90]2S laminates and 25% for the [30/-30/0/90]2S laminate. Brittle net section failure was the failure mode identified in all the analyzed specimens, which agrees with previous experimental work carried out by several authors
dc.format.extentxix, 124 pages
dc.publisherWichita State University
dc.rightsCopyright 2018 by Rodrigo Marco Carrillo All Rights Reserved
dc.subject.lcshElectronic dissertation
dc.titleEvaluation of a progressive damage model for a single lap-shear joint of multi-directional laminates

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  • AE Theses and Dissertations
    Electronic copies of theses and dissertations defended in the Department of Aerospace Engineering
  • CE Theses and Dissertations
    Doctoral and Master's theses authored by the College of Engineering graduate students
  • Master's Theses
    This collection includes Master's theses completed at the Wichita State University Graduate School (Fall 2005 -- current) as well as selected historical theses.

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