Finite element modeling of partially delaminated composite beams with contact-impact conditions
Kwon, Young W.
MetadataShow full item record
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.
RightsThis 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.
Showing items related by title, author, creator and subject.
Menzies, Margaret Anne (Monterey, California. Naval Postgraduate School, 1991-12);This investigation is concerned with the optimization of arch structures. The DOT optimization code is used to minimize the volume of such arch structures which are constrained by limits on stress, design geometry, and ...
Elshafei, Mostafa Adnan (Monterey, California. Naval Postgraduate School, 1996-09);In the present work, the shape control of fiber reinforced composite plate with embedded piezoelectric actuators is investigated. A finite element formulation is developed for modeling a laminated composite plate that has ...
Culpepper, Steven Drew (Monterey, California. Naval Postgraduate School, 1991-03);The Navy is considering the feasibility of increasing the patrol aircraft P-3C zero fuel weight enabling avionics and payload growth. This analysis examines the consequences to the structural requirements of the ...