NDLI: Numerical characterization of a composite bonded wing-box

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Numerical characterization of a composite bonded wing-box

Content Provider	NASA Technical Reports Server (NTRS)
Author	Smeltzer II, Stanley S. Satyanarayana, Arunkumar Lovejoy, Andrew E.
Copyright Year	2008
Description	The development of composite wing structures has focused on the use of mechanical fasteners to join heavily-loaded areas, while bonded joints have been used only for select locations. The focus of this paper is the examination of the adhesive layer in a generic bonded wing box that represents a "fastenerless" or unitized structure in order to characterize the general behavior and failure mechanisms. A global/local approach was applied to study the response of the adhesive layer using a global shell model and a local shell/solid model. The wing box was analyzed under load to represent a high-g up-bending condition such that the strains in the composite sandwich face sheets are comparable to an expected design allowable. The global/local analysis indicates that at these wing load levels the strains in the adhesive layer are well within the adhesive's elastic region, such that yielding would not be expected in the adhesive layer. The global/local methodology appears to be a promising approach to evaluate the structural integrity of the adhesively bonded structures.
File Size	1893297
Page Count	12
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20080015750
Archival Resource Key	ark:/13960/t3rv5j468
Language	English
Publisher Date	2008-04-07
Access Restriction	Open
Subject Keyword	Structural Mechanics Structural Design Deformation Structural Stability Aircraft Design Adhesive Bonding Sandwich Structures Wings Structural Strain Bending Stiffness Composite Structures Loads Forces Structural Analysis Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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