Publication:
Finite element modeling of partially delaminated composite beams with contact-impact conditions

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Authors
Aygunes, Haluk
Subjects
NA
Advisors
Kwon, Young W.
Date of Issue
1994-06
Date
June, 1994
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
A new finite element modeling is presented to investigate the static and dynamic behavior of laminated composite beams with partial delamination. In this study, a newly developed rectangular beam element is used. The element has lateral and axial displacements as degrees of freedom but no rotation. For simplicity, linear shape functions are used for the beam element. As a result, the element has six degrees of freedom, four of which are the axial displacements at the corner points and two are the lateral displacements at the ends. In addition, contact-impact conditions are applied to the finite element modeling to avoid overlapping of the upper and lower portions of a delaminated section. The numerical study shows that depending on existence of an embedded delamination crack and its size, the response is different for a beam with a crack and subjected to a short impulse load.
Type
Thesis
Description
Series/Report No
Department
Mechanical Engineering
Organization
NA
Identifiers
NPS Report Number
Sponsors
Funder
NA
Format
43 p.;28 cm.
Citation
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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